Arduino-en Archieven

January 23, 2024

Arduino led bar demo & sketch for 64×16 Canton electronics LED matrix

Module No.: TB275

//#include <AT24Cxx.h>//no lib needed since we will only use basic functions in 1 page at first

// Author: Phil Kaziewicz 19th July 2014,
// Jan Griffioen did quite some ADDITIONS july-nov 2014 such as RTC, temp, humidity, barmetric pressure, stringtext in time, funny roll-ups etc and voidstructuring
// 64×16 LED display matrix test code
// based upon original code from canton-electonics
// Arduino 1.0.6 NANO V4.0 (with the 2008 Windows drivers; these work with W8.1;

// add buttons or wire bridges for intensity (if possible), speed, language, time up and time down (both last buttons work more agressively when kept pushing…)
// will also try to adapt rotary switches for settings…
// D9& D?? are free for this
// A1 and A3, A6 and higher are free for this, preferrably with a resistor network like on the LCD shields, that should only consume 1 A-pin…
// Add a device for proximity and connect to a ‘button’ input for something like speed or intensity// crash,…
// The development is done with a Nano, after all is OK the pro mini will be glued to the rear of the board and one time programmed via a USB to TTL converter.
// Re-programming only on request!

#include <dht.h>

// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

#define DHTPIN 16 // what pin we’re connected to; A2=D16

// Uncomment whatever type you’re using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V! with shield 5V is OK
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor for normal 16mhz Arduino
DHT dht(DHTPIN, DHTTYPE, 10);
// NOTE: For working with a faster chip, like an Arduino Due or Teensy, you
// might need to increase the threshold for cycle counts considered a 1 or 0.
// You can do this by passing a 3rd parameter for this threshold. It’s a bit
// of fiddling to find the right value, but in general the faster the CPU the
// higher the value. The default for a 16mhz AVR is a value of 6. For an
// Arduino Due that runs at 84mhz a value of 30 works.
// Example to initialize DHT sensor for Arduino Due:
//DHT dht(DHTPIN, DHTTYPE, 30);

//inputs for the select switches are: A1= Select, D9= Up and D7= Down

#define SelectPIN 15 //(=A1 when used digital) // what pin we’re connected to input for the select switch: A1= Select
#define UpPIN 9 // what pin we’re connected to input for the select switch: D9= Up
#define DownPIN 7 // what pin we’re connected to input for the select switch: D7= Down

#include <avr/pgmspace.h>
#include <Wire.h>
byte high = 0x00, low=0x00;//used for the AT24C32 chip addressing, no lib needed here
#include “RTClib.h”

RTC_DS1307 rtc; // this time module 1307 is connected to SCL (A5 on Nano) and SDA (A4 on Nano)
//#define AT24C32 0x50 //no lib needed here , address is correct though

boolean (Select)=false;
boolean (Up)=false;
boolean (Down)=false;
boolean (DEBUG)=true;

#define BMP085_ADDRESS 0x77 // I2C address of barometer BMP085 for barometer/temp/hight; this is also connected to SCL (A5 on Nano) and SDA (A4 on Nano)

const unsigned char OSS = 0; // Oversampling Setting

// Calibration values
int ac1;
int ac2;
int ac3;
unsigned int ac4;
unsigned int ac5;
unsigned int ac6;
int b1;
int b2;
int mb;
int mc;
int md;

//int wait; //, integer between 7 and 18, memory chip position low 1 and 2
int typeofclock; //, small clock or big clock 0 or 1 position low 3
int fun; //, with fun or just readouts 0 or 1 position low 3
int minormax; //, minimum screen or all of it 0 or 1 position low 4
int matrixwidth = 64;
int matrixheight = 16;

// b5 is calculated in bmp085GetTemperature(…), this variable is also used in bmp085GetPressure(…)
// so …Temperature(…) must be called before …Pressure(…).
long b5;

// Connections to board
const byte latchPin = 8;
const byte clockPin = 12;
const byte data_R1 = 10;
const byte data_R2 = 11;
const byte en_74138 = 2;
const byte la_74138 = 3;
const byte lb_74138 = 4;
const byte lc_74138 = 5;
const byte ld_74138 = 6;
byte ScanRow = 0;
unsigned long counter;
const int pinRandom = A0; // better to get this than use the standard C randomizer.. A0 can be freed if needed for anything else….

//const int wait = 100; // In milliseconds
const int length = 8;
int x[length], y[length];
int ptr, nextPtr;
int wait = 12; // In milliseconds (15 is nice), must be between 8 and 18
//int inc = -1;
int resetcounter=1;
//int waittemp = 15;

// declare the strings:
//String Shour,Shour1,Sminute,SdayOfWeek,Sday,Smonth,Sdate,Syear,ENtijd,Sminutesingle,Stotal;

/* #######################################
# RTC_DS1307 Datatypes (KEYWORD1)
#######################################

DateTime KEYWORD1
RTC_DS1307 KEYWORD1
RTC_Millis KEYWORD1

#######################################
# Methods and Functions (KEYWORD2)
#######################################

year KEYWORD2
month KEYWORD2
day KEYWORD2
hour KEYWORD2
minute KEYWORD2
second KEYWORD2
dayOfWeek KEYWORD2
secondstime KEYWORD2
unixtime KEYWORD2
begin KEYWORD2
adjust KEYWORD2
isrunning KEYWORD2
now KEYWORD2

#######################################
# Constants (LITERAL1)
#######################################
*/

char* dayNameEN[] = {
“g “, “Monday”, “Tuesday”, “Wednesday”, “Thursday”, “Friday”, “Saturday”, “Sunday”};
char* hourNameEN[] = {“twelve”, “one”, “two”, “three”, “four”, “five”, “six”, “seven”, “eight”, “nine”, “ten”, “eleven”, “twelve”, “one”};
// “two”, “three”, “four”, “five”, “six”, “seven”, “eight”, “nine”, “ten”, “eleven”, “twelve”};
char* monthNameEN[] = {“G “, ” January”, “February”, “March”, “April”, “May”, “June”, “July”, “August”, “September”, “October”, “November”, “December”};

byte buffer[256] = { // Display buffer (which is scanned by the interrupt timer) of 8×32 bytes
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};

#include <fontsBIGREDLED.h>

// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
// Routine to print a single character in one of 8 columns
// Inputs:
// x is one of (0,16,24,32,40,48,56), for shifting purposes 64 should als be available….
// y (0 to 16 or 24 depending upon font size),
// n is either (0 to 9) or an ascii value, ascii as ([“”])??
// font=0 for big font, 2 for small font,
// inverse is true for an inverted character
void drawChar(uint16_t x, uint16_t y, byte n, byte font, boolean inverse) {
byte charbytes[16], fontrows, xover8 = x >> 3;
int index;
if (0 != (x % 8)) return; // x not a multiple of 8
if ((n > 9) && (n < 32)) return; // invalid character
if (font == 2) fontrows = 16; else fontrows = 8;
if ((n >= 0) && (n <= 9)) index = (n + 16) * fontrows; else index = (n – 32) * fontrows; // go to the right code for this character

// addressing start at buffer and add y (rows) * (WIDTH is 64 so WIDTH/8) is 8 plus (x / 8) is 0 to 7
byte *pDst = buffer + (y << 3) + xover8;
for (byte i = 0; i < fontrows; i++) { // fill up the charbytes array with the right bits
if (font == 0) charbytes[i] = pgm_read_byte(&(font8x8_basic[index + i]));
// if (font==1) charbytes[i] = pgm_read_byte(&(font8x8_extended[index+i]));
if (font == 2) charbytes[i] = pgm_read_byte(&(font8x16_basic[index + i]));
// reverse bit order for fonts 0 and 1
if (font != 2) {
charbytes[i] = (charbytes[i] & 0xF0) >> 4 | (charbytes[i] & 0x0F) << 4;
charbytes[i] = (charbytes[i] & 0xCC) >> 2 | (charbytes[i] & 0x33) << 2;
charbytes[i] = (charbytes[i] & 0xAA) >> 1 | (charbytes[i] & 0x55) << 1;
};
if (inverse) charbytes[i] = ~charbytes[i];
};
const byte *pSrc = charbytes; // point at the first set of 8 pixels
for (byte i = 0; i < fontrows; i++) {
*pDst = *pSrc; // populate the destination byte
pDst += 8; // go to next row on buffer
pSrc++; // go to next set of 8 pixels in character
}
};
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
void moveLeft(byte pixels, byte rowstart, byte rowstop) { // routine to move certain rows on the screen “pixels” pixels to the left
byte row, column;
short unsigned int address;
for (column = 0; column < 8; column++) {
for (row = rowstart; row < rowstop; row++) {
address = (row << 3) + column; /// right here!
if (column == 7)
buffer[address] = buffer[address] << pixels; // shuffle pixels left on last column and fill with a blank
else { // shuffle pixels left and add leftmost pixels from next column
byte incomingchar = buffer[address + 1];
buffer[address] = buffer[address] << pixels;
for (byte x = 0; x < pixels; x++) {
buffer[address] += ((incomingchar & (128 >> x)) >> (7 – x)) << (pixels – x – 1);
};
}
}
}
};
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
// set a single pixel on or off
void setPixel(byte x, byte y, byte colour) {
bitWrite(buffer[(y << 3) + (x >> 3)], 7 – (x & 7), colour);
};
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
void drawRect(byte x1, byte y1, byte x2, byte y2, byte colour) {
for (byte x = x1; x <= x2; x++) {
setPixel(x, y1, colour);
setPixel(x, y2, colour);
};
for (byte y = y1; y <= y2; y++) {
setPixel(x1, y, colour);
setPixel(x2, y, colour);
};
};

//start VOID =====================================================================================
void drawLine(byte x1, byte y1, byte x2, byte y2, byte colour) {

//Draws a line, between the points (x1, y1) and (x2, y2) in this graphics context’s coordinate system.
//Parameters:
// x1 – the first point’s x coordinate.
// y1 – the first point’s y coordinate.
// x2 – the second point’s x coordinate.
// y2 – the second point’s y coordinate.

for (byte x = x1; x <= x2; x++) {
setPixel(x, y1, colour);
setPixel(x, y2, colour);
};
for (byte y = y1; y <= y2; y++) {
setPixel(x1, y, colour);
setPixel(x2, y, colour);
};
};

// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
void shiftOut(byte row) { // fast routine to shove out 8 columns into two rows via board’s shift registers
for (byte column = 0; column < 8; column++) {
byte index = column + (row << 3);
for (byte i = 0; i < 8; i++) {
PORTB &= ~(3 << (data_R1 – 8)); // data_R2 is LOW; data_R1 is LOW;
PORTB &= ~(1 << (clockPin – 8)); // digitalWrite(clockPin,LOW);
PORTB |= !((buffer[index] >> (7 – i)) & 0x01) << (data_R1 – 8); // top set of rows
PORTB |= !((buffer[index + 128] >> (7 – i)) & 0x01) << (data_R2 – 8); // bottom set of rows
PORTB |= 1 << (clockPin – 8); // digitalWrite(clockPin,HIGH);
};
};
};

// Scan a pair of rows on to the display from “buffer” via the interrupt
ISR(TIMER2_COMPA_vect) {
cli();
digitalWrite(en_74138, HIGH); // Turn off display
shiftOut(ScanRow); // Shift out 8 columns
digitalWrite(latchPin, LOW);
digitalWrite(latchPin, HIGH);
PORTD = (ScanRow << 3) | (PORTD & 0X87); // Highlight row: pins 3 4 5 6 (la_74138 lb_74138 lc_74138 ld_74138)
digitalWrite(en_74138, LOW); // Turn on display
ScanRow++; // Do the next pair of rows next time this routine is called
if (ScanRow == 16) ScanRow = 0;
sei();
};

//start VOID =====================================================================================
void wacht(int wachttijd)
{
for (int a = 0; a < wachttijd; a++ )
{
int val = digitalRead(SelectPIN); // must be Select read the input pin

if (val==LOW) // if key Select is pressed
{
Select=true; // set a binary state high here , then
return; //return to loop;
}

delay(1);
}
}

//======================================================================================================================================================
void runscreen(String Stotal)
{
int stringlength= (Stotal.length()+1);//+1
char timestring[stringlength];
Stotal.toCharArray(timestring,(stringlength));
static int count = 0;

for (int count = 0; count <= sizeof(timestring) -2; count++)//was timestring-1 but then there is 1 blank space in front of each roll
{
drawChar(56, 0, timestring[count % (sizeof(timestring)-1 )], 2, false);//timestring-1
// drawChar(56, 8, timestring[count % (sizeof(timestring)-1 )], 0, false);//timestring-1
for (byte i = 0; i < 9; i++)// move the text 9 pixels (not 8 because it looks better) to the left
{
moveLeft(1, 2, 32);
wacht(wait);
}
}
}
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
void writescreensmall(String above, String under, int height)
{
char letter;
int aa;
int a;
for (a = 0; a < 8; a++ )
{letter = above.charAt(a);
aa=8*a;
drawChar(aa, height, (letter), 0, false);
}
for (a = 0; a < 8; a++ )
{letter = under.charAt(a);
aa=8*a;
drawChar(aa, 8, (letter), 0, false);
}
}

//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
void writescreenbig(String above, int height)
{
char letter;
int aa;
int a;
for (a = 0; a < 8; a++ )
{letter = above.charAt(a);
aa=8*a;
drawChar(aa, height, (letter), 2, false);
}
}
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
void setup() {
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
pinMode(SelectPIN, INPUT); // N.O. push button switch
pinMode(UpPIN, INPUT); // N.O. push button switch
pinMode(DownPIN, INPUT); // N.O. push button switch

digitalWrite(SelectPIN, HIGH); // pull-ups on
digitalWrite(UpPIN, HIGH);// pull-ups on
digitalWrite(DownPIN, HIGH); // pull-ups on

Serial.begin(9600);
// InitDHT();//Does what’s necessary to prepare for reading DHT
dht.begin();
//delay(1300); // needed for DHT11

#ifdef AVR
Wire.begin();
#else
Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino Due
#endif
rtc.begin();

if (! rtc.isrunning()) {
//Serial.println(“RTC is NOT running!”);
// following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(__DATE__, __TIME__));
}
// rtc.adjust(DateTime(__DATE__, __TIME__)); // Q&D way to set the time anyway but take it off the program afterwards!

for ( int ptr = 0; ptr < length; ptr++ ) {
x[ptr] = 16 ; //numberOfHorizontal8bitsDisplays * 8 / 2
y[ptr] = 16 ; //numberOfVertical8bitsDisplays * 8 / 2
}
nextPtr = 0;
// Serial.println(“Humidity and temperature\n\n”);

bmp085Calibration();

// Set up Timer2 as the scanning interrupt timer
cli(); // clear interrupts
TCCR2A = 0; TCCR2B = 0; TCNT2 = 0;
TCCR2B |= (1 << CS12) | (1 << CS10); // Set 1024 prescaler
// 160Hz scan rate = 10 frames/second (16 pairs of rows)
OCR2A = 97; // 97 = (16,000,000 / (1024*160)) – 1
TCCR2A |= (1 << WGM21); TIMSK2 |= (1 << OCIE2A);

pinMode(latchPin, OUTPUT); pinMode(clockPin, OUTPUT);
pinMode(data_R1, OUTPUT); pinMode(data_R2, OUTPUT);

pinMode(en_74138, OUTPUT);
pinMode(la_74138, OUTPUT); pinMode(lb_74138, OUTPUT);
pinMode(lc_74138, OUTPUT); pinMode(ld_74138, OUTPUT);

digitalWrite(en_74138, LOW);
digitalWrite(data_R1, HIGH); digitalWrite(data_R2, HIGH);
counter = millis();
sei(); //allow interrupts

//READ the memory of the AT24C32 (and write te settings he
low=0x00;
// Serial.println();
// Serial.print(“DATA SETUP VOID READ: “);
for (int i=0;i<=20;i++)
{
Wire.beginTransmission(0x50);
Wire.write(high);
Wire.write(low);
Wire.endTransmission();
Wire.requestFrom(0x50 ,1);
int data=Wire.read();//char or int, can both be done?
delay(5);

// Serial.print (data)-48;
// Serial.print(“,”);
// Serial.println(low);
// delay(10);
if (low==1) wait=int(data)-48+8;
if (low==2) typeofclock=int(data)-48;
if (low==3) fun=int(data)-48;
if (low==4) minormax=int(data)-48;

low++;
}

// the values of the settings will be written in AT24C32 register and will be read in Setup void, every time the device (re)starts
// the values are:
// wait, integer between 0 and 9==> 8 to 18 position low 1
// typeofclock, small clock or big clock 0 or 1 position low 2
// fun, with fun or just readouts 0 or 1 position low 3
// minormax, minimum screen or all of it 0 or 1 position low 4
// Serial.println();
// Serial.print(” Transferred to program: wait= “);
// Serial.print(wait);
// Serial.print(“, typeofclock= “);
// Serial.print(typeofclock);
// Serial.print(“, fun= “);
// Serial.print(fun);
// Serial.print(“, minormax= “);
// Serial.print(minormax);

// Serial.println();

}

// Note that there’s no need to do anything with the screen in the main loop.
// Whatever’s in “buffer” is constantly scanned out.

//======================================================================================================================================================
void loop() {
// bmp085Calibration();
//delay(2000);
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…

// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds ‘old’ (its a very slow sensor)
//float h = dht.readHumidity();
// Read temperature as Celsius
// float t = dht.readTemperature();
// Read temperature as Fahrenheit
// float f = dht.readTemperature(true);

// Check if any reads failed and exit early (to try again).
// if (isnan(h) || isnan(t) || isnan(f)) {
// Serial.println(“Failed to read from DHT sensor!”);
// return;
// }

// Compute heat index
// Must send in temp in Fahrenheit!
// float hi = dht.computeHeatIndex(f, h);
// float temperature = bmp085GetTemperature(bmp085ReadUT()); //MUST be called first
// float pressure = bmp085GetPressure(bmp085ReadUP());
// float atm = pressure / 101325; // “standard atmosphere”
// float altitude = calcAltitude(pressure); //Uncompensated caculation – in Meters

// Serial.print(“Humidity: “);
// Serial.print(h);
// Serial.print(” %\t”);
// Serial.print(“Temperature: “);
// Serial.print(t);
// Serial.print(” *C “);
// Serial.print(f);
// Serial.print(” *F\t”);
// Serial.print(“Heat index: “);
// Serial.print(hi);
// Serial.println(” *F”);

// Serial.println();//line break
// Serial.print(“Temperature: “);
// Serial.print(temperature, 2); //display 2 decimal places
// Serial.println(“deg C”);

// Serial.print(“Pressure: “);
// Serial.print(pressure, 0); //whole number only.
// Serial.println(” Pa (100 Pa = 1 millibar)”);

// Serial.print(“Standard Atmosphere: “);
// Serial.println(atm, 4); //display 4 decimal places

// Serial.print(“Altitude: “);
// Serial.print(altitude, 2); //display 2 decimal places
// Serial.println(” M”);

// Serial.println();//line break
// clearscreen();

// if (resetcounter == 4)resetFunc(); //call reset
// resetcounter=resetcounter+1;

clearscreen();
rollingtimeEN();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
rollingdateEN();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
runscreen(” “); //shiftout the display with blanks
clearscreen();
JMWG();

clearscreen();

if (typeofclock==0) return;
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
if (typeofclock==0) return;
// clearscreen();
// writescreensmall (” Plaats “, ” je “,0);
// wacht(wait*140);
// if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
// writescreenbig (” Eigen “, 0);
// wacht(wait*140);
// if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
// writescreensmall (” tekst “, ” hier! “,0);
// wacht(wait*140);
// if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
clearscreen();
rollinghumidEN();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
rollingTempENF();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
rollingTempENC();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
rollingPressureEN();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
rollingHeightEN();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…

clearscreen();
bigclock();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
clearscreen();
JMWG();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
clearscreen();
rollingtimeEN();
runscreen(” “); //shiftout the display with blanks
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
clearscreen();
snake();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
clearscreen();
rollupclock();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…
clearscreen();
JMWG();
if (Select)switches() ; // if key select is pressed it is detected in void wait and returned to loop; from there to void switches…

// wait = wait + inc;
// if ( wait < 8 ) inc = 1; //random(15,2);
// if ( wait > 15 ) inc = -1; //-random(15,2);
// wait=random (18,8);

};

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
void clearscreen()

// setPixel(x,y,colour) where if colour=0 pixel=off, if colour=1 pixel=on
{
int yy = 0;
int xx = 0;
for (yy = 0; yy <= 16; yy++)
{
for (xx = 0; xx <= 64; xx++)
{
setPixel(xx, yy, (0));
}
}
}

if ( (int (now.hour())) > 11) {counthour = (int(now.hour())-12);}
else int counthour = int(now.hour());

String Shour = (hourNameEN[counthour]);
String Shour1 = (hourNameEN[(counthour+1)]);
int Sminutesingle = (now.minute());

String ENtijd = “Time ERROR”;

if ((Sminutesingle)==0) ENtijd = “exactly “+ Shour+ ” o’clock”;
else if ((Sminutesingle)==1) ENtijd = “1 minute past “+ Shour;
else if ((Sminutesingle)==15) ENtijd = “a quarter past “+ Shour;
// else if ((Sminutesingle)==29) ENtijd = “1 to half “+ Shour1;
else if ((Sminutesingle)==30) ENtijd = “half past “+ Shour;
// else if ((Sminutesingle)==31) ENtijd = “1 past half “+ Shour1;
else if ((Sminutesingle)==45) ENtijd = “a quarter to “+ Shour1;
else if ((Sminutesingle)==59) ENtijd = “1 minute to “+ Shour1;// + ” o’clock”;
else if (Sminutesingle > 1 && Sminutesingle < 29){ ENtijd = String(Sminutesingle)+ ” minutes past “+ Shour;}
else if (Sminutesingle > 31 && Sminutesingle < 59){ ENtijd = String(60-Sminutesingle)+ ” minutes to ” + Shour1;}
else if ((Sminutesingle)==60) ENtijd = “precisely “+ Shour1+ ” o’clock”;
else ENtijd =”Time ERROR”;

//define the timestring to be rolled here:

String Stotal = ” It is ” + ENtijd;

runscreen(Stotal);
}

//======================================================================================================================================================
void rollingdateEN()
{
DateTime now = rtc.now(); // Get data from the DS1307
String Sday = (dayNameEN[int(now.dayOfWeek())]);
String Sdate = String(now.day());
String Smonth = (monthNameEN[int(now.month())]);
String Syear = String(now.year()).substring(0,4);
String Stotal = “, ” + Sday + ‘ ‘ + Smonth + ‘ ‘ + Sdate + “, ” + Syear; //define the datestring to be rolled here
runscreen(Stotal);
clearscreen;
}

//start VOID =====================================================================================
void snake()
{
int matrixwidth = 64;
int matrixheight = 16;

for (int a = 0; a < (1000); a++) {
// Shift pointer to the next segment
ptr = nextPtr;
nextPtr = next(ptr);

setPixel(x[ptr], y[ptr], 1); // Draw the head of the snake

wacht(wait * 1);

if ( ! occupied(nextPtr) ) {
setPixel(x[nextPtr], y[nextPtr], 0); // Remove the tail of the snake

}

for ( int attempt = 0; attempt < 20; attempt++ ) {

// Jump at random one step up, down, left, or right
switch ( random(4) ) {
case 0: x[nextPtr] = constrain(x[ptr] + 1, 0, matrixwidth – 1); y[nextPtr] = y[ptr]; break;
case 1: x[nextPtr] = constrain(x[ptr] – 1, 0, matrixwidth – 1); y[nextPtr] = y[ptr]; break;
case 2: y[nextPtr] = constrain(y[ptr] + 1, 0, matrixheight – 1); x[nextPtr] = x[ptr]; break;
case 3: y[nextPtr] = constrain(y[ptr] – 1, 0, matrixheight – 1); x[nextPtr] = x[ptr]; break;
}

if ( ! occupied(nextPtr) ) {
break; // The spot is empty, break out the for loop
}
}
}
}

boolean occupied(int ptrA) {
for ( int ptrB = 0 ; ptrB < length; ptrB++ ) {
if ( ptrA != ptrB ) {
if ( equal(ptrA, ptrB) ) {
return true;
}
}
}

return false;
}

int next(int ptr) {
return (ptr + 1) % length;
}

boolean equal(int ptrA, int ptrB) {
return x[ptrA] == x[ptrB] && y[ptrA] == y[ptrB];
// wait=waittemp;
clearscreen();
}

//start VOID =====================================================================================
void bigclock()
{
clearscreen;
DateTime now = rtc.now(); // Date and time functions using a DS1307 RTC connected via I2C and Wire lib
// String Syear = String(now.year()).substring(2,4);

for (int aa = 0; aa <= 50; aa++)
{
DateTime now = rtc.now();
// writescreenbig ((String ((now.hour()/10) %10))+(String (now.hour()%10))+’:’+String((now.minute()/10) %10) + String(now.minute()%10)+’:’+ (String((now.second()/10)%10))+ String(now.second()%10),int((aa-25)/8));
writescreenbig ((String ((now.hour()/10) %10))+(String (now.hour()%10))+’:’+String((now.minute()/10) %10) + String(now.minute()%10)+’:’+ (String((now.second()/10)%10))+ String(now.second()%10),0);
wacht (wait*7);
writescreenbig ((String ((now.hour()/10) %10))+(String (now.hour()%10))+’ ‘+String((now.minute()/10) %10) + String(now.minute()%10)+’ ‘+ (String((now.second()/10)%10))+ String(now.second()%10),0);
// writescreenbig (String(now.hour()).substring(0,2)+’ ‘+ String(now.minute()).substring(0,2)+’ ‘+ String(now.second()).substring(0,2),int((aa-25)/8));
wacht (wait*7);
}
//clearscreen;
for (int aa = 0; aa <= 15; aa++)
{
DateTime now = rtc.now();
writescreenbig ((String ((now.day()/10) %10))+(String (now.day()%10))+’/’+String((now.month()/10) %10) + String(now.month()%10)+’/’+ String(now.year()).substring(2,4),0);
wacht (wait*5);
drawChar(16, -1, ‘-‘ , 2, false);
drawChar(40, -1, ‘-‘ , 2, false);
wacht (wait*5);
drawChar(16, -1, (92) , 2, false);
drawChar(40, -1, (92) , 2, false);
wacht (wait*5);
drawChar(16, -1, (124) , 2, false);
drawChar(40, -1, (124) , 2, false);
wacht (wait*5);
}
clearscreen;
}
//start VOID =====================================================================================
void rollupclock()
{
clearscreen();
DateTime now = rtc.now(); // Date and time functions using a DS1307 RTC connected via I2C and Wire lib

for (int aa = 17; aa >= 0; aa–)
{
DateTime now = rtc.now();
clearscreen();
writescreenbig ((String ((now.hour()/10) %10))+(String (now.hour()%10))+’:’+String((now.minute()/10) %10) + String(now.minute()%10)+’:’+ (String((now.second()/10)%10))+ String(now.second()%10),aa);
wacht (wait*2);
}
wacht(wait*100);
//for (int aa = 0; aa <= 17; aa++) //down and away
for (int aa = 0; aa >= -17; aa–) //up and away
{
clearscreen();
writescreenbig ((String ((now.hour()/10) %10))+(String (now.hour()%10))+’:’+String((now.minute()/10) %10) + String(now.minute()%10)+’:’+ (String((now.second()/10)%10))+ String(now.second()%10),aa);
wacht (wait*2);
}
clearscreen;
wacht(wait*30);
}
//start VOID =====================================================================================

void JMWG(){

int matrixwidth = 64;
int matrixheight = 16;

for (int a = 0; a < 1; a++ ) {
drawChar(16, 0, ‘J’, 2, false);
drawChar(24, 0, ‘M’, 2, false);
drawChar(32, 0, ‘W’, 2, false);
drawChar(40, 0, ‘G’, 2, false);

for ( int x = 0; x < matrixwidth – 1; x++ ) {
drawLine(x, 0, matrixwidth – 1 – x, matrixheight – 1, 1);
wacht(wait);
drawLine(x, 0, matrixwidth – 1 – x, matrixheight – 1, 0);
}

for ( int y = 0; y < matrixheight – 1; y++ ) {
drawLine(matrixwidth – 1, y, 0, matrixheight – 1 – y, 1);
wacht(wait);
drawLine(matrixwidth – 1, y, 0, matrixheight – 1 – y, 0);
}
}
}

//======================================================================================================================================================
void rollinghumidEN()
{
int Stemp = dht.readHumidity();// Get data from the temp and humid sensor
String Stotal=” The relative humidity is “+String(Stemp)+” percent,”; //define the humid string to be rolled
runscreen(Stotal);
}

//======================================================================================================================================================
void rollingTempENF()
{
float temperature = 32+ (1.8*(bmp085GetTemperature(bmp085ReadUT()))); // calculate to Fahrenheit= ((Celsius x 1.8) + 32)

String Stotal= ” the temperature is ” + String(temperature,1)+ ” degrees Fahrenheit,” ; //define the string to be rolled
runscreen (Stotal);
}

String Stotal= ” (” + String(temperature,1)+ ” degrees Celsius),” ; //define the string to be rolled
runscreen (Stotal);
}

//======================================================================================================================================================
void rollingPressureEN()
{
float pressure = bmp085GetPressure(bmp085ReadUP()); // 100 pascal = 1 millibar
float pressure2 = float (pressure/100);
String Stotal= ” the airpressure is ” + String(pressure2) + ” hPa,”; //define the string to be rolled
runscreen (Stotal);
}

//======================================================================================================================================================
void rollingHeightEN()
{
float pressure = (bmp085GetPressure(bmp085ReadUP())/100); // 100 pascal = 1 millibar
int altitude = calcAltitude(pressure*100); //Uncompensated calculation – in Meters
String Stotal= ” the fictive height is ” + String (altitude) + ” meters “; //define the string to be rolled
runscreen (Stotal);
}

//======================================================================================================================================================
// Stores all of the bmp085’s calibration values into global variables
// Calibration values are required to calculate temp and pressure
// This function should be called at the beginning of the program
void bmp085Calibration()
{
ac1 = bmp085ReadInt(0xAA);
ac2 = bmp085ReadInt(0xAC);
ac3 = bmp085ReadInt(0xAE);
ac4 = bmp085ReadInt(0xB0);
ac5 = bmp085ReadInt(0xB2);
ac6 = bmp085ReadInt(0xB4);
b1 = bmp085ReadInt(0xB6);
b2 = bmp085ReadInt(0xB8);
mb = bmp085ReadInt(0xBA);
mc = bmp085ReadInt(0xBC);
md = bmp085ReadInt(0xBE);
}

// Calculate temperature in deg C
float bmp085GetTemperature(unsigned int ut){
long x1, x2;

x1 = (((long)ut – (long)ac6)*(long)ac5) >> 15;
x2 = ((long)mc << 11)/(x1 + md);
b5 = x1 + x2;

float temp = ((b5 + 8)>>4);
temp = temp /10;

return temp;
}

// Calculate pressure given up
// calibration values must be known
// b5 is also required so bmp085GetTemperature(…) must be called first.
// Value returned will be pressure in units of Pa.
long bmp085GetPressure(unsigned long up){
long x1, x2, x3, b3, b6, p;
unsigned long b4, b7;

b6 = b5 – 4000;
// Calculate B3
x1 = (b2 * (b6 * b6)>>12)>>11;
x2 = (ac2 * b6)>>11;
x3 = x1 + x2;
b3 = (((((long)ac1)*4 + x3)<<OSS) + 2)>>2;

// Calculate B4
x1 = (ac3 * b6)>>13;
x2 = (b1 * ((b6 * b6)>>12))>>16;
x3 = ((x1 + x2) + 2)>>2;
b4 = (ac4 * (unsigned long)(x3 + 32768))>>15;

b7 = ((unsigned long)(up – b3) * (50000>>OSS));
if (b7 < 0x80000000)
p = (b7<<1)/b4;
else
p = (b7/b4)<<1;

x1 = (p>>8) * (p>>8);
x1 = (x1 * 3038)>>16;
x2 = (-7357 * p)>>16;
p += (x1 + x2 + 3791)>>4;

long temp = p;
return temp;
}

// Read 1 byte from the BMP085 at ‘address’
char bmp085Read(unsigned char address)
{
unsigned char data;

Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(address);
Wire.endTransmission();

Wire.requestFrom(BMP085_ADDRESS, 1);
while(!Wire.available())
;

return Wire.read();
}

// Read 2 bytes from the BMP085
// First byte will be from ‘address’
// Second byte will be from ‘address’+1
int bmp085ReadInt(unsigned char address)
{
unsigned char msb, lsb;

Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(address);
Wire.endTransmission();

Wire.requestFrom(BMP085_ADDRESS, 2);
while(Wire.available()<2)
;
msb = Wire.read();
lsb = Wire.read();

return (int) msb<<8 | lsb;
}

// Read the uncompensated temperature value
unsigned int bmp085ReadUT(){
unsigned int ut;

// Write 0x2E into Register 0xF4
// This requests a temperature reading
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(0xF4);
Wire.write(0x2E);
Wire.endTransmission();

// Wait at least 4.5ms
delay(5);

// Read two bytes from registers 0xF6 and 0xF7
ut = bmp085ReadInt(0xF6);
return ut;
}

// Read the uncompensated pressure value
unsigned long bmp085ReadUP(){

unsigned char msb, lsb, xlsb;
unsigned long up = 0;

// Write 0x34+(OSS<<6) into register 0xF4
// Request a pressure reading w/ oversampling setting
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(0xF4);
Wire.write(0x34 + (OSS<<6));
Wire.endTransmission();

// Wait for conversion, delay time dependent on OSS
delay(2 + (3<<OSS));

// Read register 0xF6 (MSB), 0xF7 (LSB), and 0xF8 (XLSB)
msb = bmp085Read(0xF6);
lsb = bmp085Read(0xF7);
xlsb = bmp085Read(0xF8);

up = (((unsigned long) msb << 16) | ((unsigned long) lsb << 8) | (unsigned long) xlsb) >> (8-OSS);

return up;
}
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
void writeRegister(int deviceAddress, byte address, byte val)
{
Wire.beginTransmission(deviceAddress); // start transmission to device
Wire.write(address); // send register address
Wire.write(val); // send value to write
Wire.endTransmission(); // end transmission
}

int readRegister(int deviceAddress, byte address){

int v;
Wire.beginTransmission(deviceAddress);
Wire.write(address); // register to read
Wire.endTransmission();

Wire.requestFrom(deviceAddress, 1); // read a byte

while(!Wire.available()) {
// waiting
}

v = Wire.read();
return v;
}

float calcAltitude(float pressure){

float A = pressure/101325;
float B = 1/5.25588;
float C = pow(A,B);
C = 1 – C;
C = C /0.0000225577;

return C;
}

//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
void switches()
/* the intent here is to use a couple of hardware switches to set all parameters of the system, so you don’t need to update it with the PC.
The systems becomes independent in this way and possibly it can be a sellable item then.

There will be 3 switches: Select , Up and Down. If there is enough room, I will connect them all three to available inputs:
A1= Select,
D9= Up and
D7= Down

The structure is for Select to halt the running programs through the interrupt that is built in the wait void!
Once you are in the switches void the structure is to g through setup with Up and Down, choose the appropriate setting ans Select is, after which you
can again select a new option if available and so on.

I will try to make a function that allows you to press Up and Down at the same time to return immediately or to use is as a reset possibility…

Up and down could also be used as up/down time/date/others by pressing where long press fastens the speed of change…
*/

{

//main menu select main functions 1 clock set,2 date set,3 language,4 speed,5 appearance: short/long/playfull,6 priority : more time/ more weather/ more fun, 7 update
// this variable used to store these switches is integer: MainMenu (1-7)
// The choices will be stored in the available flash memory of the DS 1307 so that the system will always restart with the active last settings
// Only the first 8 bytes (0x00 – 0x07) are used by the clock itself while the other 56 bytes can be used as scratchpad RAM, BUT.. on this small board there
// is also 32K of memory available in a small AT24C32 separately addressable Eprom memory!

Select=false; // reset state of Reset button to start

// this is the 1st loop to input and setup
clearscreen();

writescreensmall(” press a”, ” button “, 0);

// delay(5000);

//wait for press on Up, Down or Select
while(1)
{
int valU = digitalRead(UpPIN); // read the input pin
if (valU==LOW) {Up=true; break;} // // if key Up is pressed set a binary state high here
int valD = digitalRead(DownPIN); // read the input pin
if (valD==LOW) {Down=true; break;} // if key Down is pressed set a binary state high here
// int valS = digitalRead(SelectPIN); // read the input pin
// if (valS==LOW) {Select=true; break;} // if key Select is pressed set a binary state high here
}
clearscreen();
//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

if (Up==true){
Up=false;
// this is the 2nd loop to input and setup
clearscreen();
writescreensmall(” time “, “settings”,0);
delay(2000);

//wait for press on Up or Down
while(1)
{
int valU = digitalRead(UpPIN); // read the input pin
if (valU==LOW) {Up=true; break;} // // if key Up is pressed set a binary state high here
int valD = digitalRead(DownPIN); // read the input pin
if (valD==LOW) {Down=true; break;} // if key Up is pressed set a binary state high here
int valS = digitalRead(SelectPIN); // read the input pin
if (valS==LOW) {Select=true; break;} // if key Select is pressed set a binary state high here
}
clearscreen();
}

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

if (Down==true){
Down=false;
// this is the 2nd loop to input and setup
clearscreen();
writescreensmall(” date “, “settings”,0);

delay(2000);

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
if (Select=true) {Select=false; Up=false; Down=false; return;}
if (Up=true) {Up=false; switches();}
if (Down=true) {Down=false; switches();}
//else Select=true, this must be better structured!
//else break;

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
// write the dataword in memory that will be used after this as settings for all variables, and when restarted read from mem for the same purpose…
// use the mem from the DS1307, extra chip on it with 32Kbit= 4kByte
low=0x00;
byte dataword[]={“05100000000testJMWG”};
//pos 1 (not 0) plus 48 is wait, etcetera…. IT IS an array of chars!
// can be written per character, is simpler than first build an array…

for (int i=0;i<=20;i++)
{
Wire.beginTransmission(0x50);
Wire.write(high);
Wire.write(low);
Wire.write(dataword[i]);
Wire.endTransmission();
delay(5);
low++;
}

//READ the memory of the AT24C32 (just used for debugging)
low=0x00;
// Serial.println();
for (int i=0;i<=20;i++)
{
Wire.beginTransmission(0x50);
Wire.write(high);
Wire.write(low);
Wire.endTransmission();
Wire.requestFrom(0x50 ,1);
char data=Wire.read();
delay(5);
// Serial.print(“DATA “);
// Serial.print(data);
// Serial.print(” LO ADD “);
// Serial.println(low);
// delay(10);
low++;
}

// Serial.println();
// Serial.print(“wait= “);
// Serial.print(wait);

// the values of the settings will be written in AT24C32 register and will be read in Setup void, every time the device (re)starts
// the values are minus 48 due to the caharcter set in memory, ascii table starts at 0 as int48!
// wait, integer between 0 and 9==>8 to 18 (+8) position low 1
// typeofclock, small clock or big clock 0 or 1 position low 2
// fun, with fun or just readouts 0 or 1 position low 3
// minormax, minimum screen or all of it 0 or 1 position low 4

Select=false; // reset state of 3 buttons to start
Up=false; // reset state of 3 buttons to start
Down=false; // reset state of 3 buttons to start

}

January 23, 2024

Circular clock WS2812 & Arduino nano

LEES DIT ARTIKEL IN HET NEDERLANDS

In the above video you see all required parts for the elctronics. An arduino Nano, a time module LS3231 with battery back-up and a 4-parts ring each with 15 WS2812 LED’s that provide a 160mm 60 LED units clock. You can build it as an open built unit as shown above with wire strings or in a 3d printable slim case that I developed. See the pictures below.

For building this nice precise clock, you can use my design files for the housing on any 3d printer that has a horizontal bed size of at least 165x165mm.

Grab both the print STL’s . HERE. from the Prusa shared site where I uploaded these designs. (If the link breaks, search on the prusa site for ws2812 circular arduino clock).

OR get the STL file for the clock’s FRONT from my website HERE

AND get the STL file for the clock’s REAR from my website HERE

One STL is for the rear and includes the Nano box, the other is for the front face of the clock. Position the rear STL 180 degrees (so up goes down) in your slicer, so both the box and the LED housing are at Z-0 level, i.e. facing down at the same horizontal level. The front can best be printed with the flat side down. ABS is not recommended since it has less stiffness, but will probably also work. For me PETG or PLA works best.

Use white filament for the front part, the rear can be any color you like.

In the circle the 4 WS2812 LED segments are positioned in 1 full circle of about 160mm.

Once you have the rear electronics connected, the front will slide snug over it. No glue required. But the LED ring can best be glued in 4 places with a drop of hotglue to the base of the rear housing. Best to do this after you are sure everything works OK.

The LED parts are available on a.o. banggood , aliexpress and so on, search for 60LED circle WS2812 that has the 160 mm outer diameter.

Each LED represents a dot either for seconds, minutes or as hour indicator.

The colors detemine the function. Blue is also used as Quarter indicator with less intensity, to have a feeling of positioning for the other LEDS when it is dark.

Please look at the video above of the ‘open’ demo model to understand how it works.

Below you can find the Arduino code for the used Nano3, as-is. it works for me, and in the code you will also find all required electrical connections and the used Time module’s spec.

When connected to your PC, you can program the Arduino and via the serial interface you can afterwards change special settings of the clock like brightness, special quarter dimlit indicators, et cetera. it’s all in the code below.

The controls can be sent via a serial interface with the usb input of the Arduino, via a terminalprogram like YAT or with the Arduino IDE program’s interface.

The commands are:

f; fader OFF
F; fader ON
m (number); dim the 4 blue marker LED’s with value (number)
S; sync to RTC time
s; sync to System time (computer)
t (time); change system time to:
b; brightness of all non-marker LEDs

Please donate $1 to my paypal account if you use (parts of) my developed materials so I can continue to share nice stuff for you to download

Hope you will have a good build!

Cheers,

jan

The Arduino code, to be used for programming the Arduino Nano3 is available at the bottom of this post as plain text to be imported in an empty arduino file (with copy and paste).

Take care to use only the libraries and time module that are specified in the code! The used time module is of the better generation that holds the time very well, also on standby.

When connecting the wires between the neopixel segments, the arduino and the time module, use a temperature-regulated soldering tool. Use a fan when you are soldering and don’t inhale the toxic gases while soldering.

The Arduino code is shown below, to be imported in Arduino in an .ino file. With Arduino, you must compile the code to get the Arduino flashed with the program. If you want to do this easier, you can make use of the binary file I already compiled for both Arduino nano versions (with full memory and with half memory). Both Arduino nano types will be OK to use for this build, but they each require specific firmware.

The last part of this post is the Arduino program for the clock:

/**
* NeoClock
*
* Clock using 60 WS2812B/Neopixel LEDs and DS3231 RTC
* Small changes and updates made by jan Griffioen, Amsterdam Europe 2018-2021
* Libraries needed:
* * Adafruit NeoPixel (Library Manager) – Phil Burgess / Paint Your Dragon for Adafruit Industries – LGPL3
* *
* * Arduino Timezone Library (https://github.com/JChristensen/Timezone) – Jack Christensen – CC-BY-SA
* * Time Library (https://github.com/PaulStoffregen/Time) – Paul Stoffregen, Michael Margolis – LGPL2.1
*/

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif

#if defined(ESP8266)
#include <pgmspace.h>
#else
#include <avr/pgmspace.h>
#endif

/* for software wire use below
#include <SoftwareWire.h> // must be included here so that Arduino library object file references work
#include <RtcDS3231.h>

SoftwareWire myWire(SDA, SCL);
RtcDS3231<SoftwareWire> Rtc(myWire);
for software wire use above */

/* for normal hardware wire use below */
#include <Wire.h> // must be included here so that Arduino library object file references work
#include <RtcDS3231.h>
RtcDS3231<TwoWire> Rtc(Wire);
/* for normal hardware wire use above */

#include <TimeLib.h> //http://www.arduino.cc/playground/Code/Time
#include <Timezone.h> //https://github.com/JChristensen/Timezone

#include <EEPROM.h>

//Central European Time (Frankfurt, Paris)
TimeChangeRule CEST = {“CEST”, Last, Sun, Mar, 2, 120}; //Central European Summer Time
TimeChangeRule CET = {“CET “, Last, Sun, Oct, 3, 60}; //Central European Standard Time
Timezone CE(CEST, CET);

TimeChangeRule *tcr; //pointer to the time change rule, use to get the TZ abbrev
time_t utc;

#define PIN 5

unsigned long lastMillis = millis();
byte dimmer = 0x88;
byte hmark = 0;

byte ohour=0;
byte ominute=0;
byte osecond=0;

boolean fader=true;

Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);

void setup() {

Serial.begin(57600);

strip.begin();
strip.setBrightness(50);

// Some example procedures showing how to display to the pixels:
// colorWipe(strip.Color(255, 0, 0), 50); // Red
//colorWipe(strip.Color(0, 255, 0), 50); // Green
//colorWipe(strip.Color(0, 0, 255), 50); // Blue
//colorWipe(strip.Color(0, 0, 0, 255), 50); // White RGBW
// Send a theater pixel chase in…
//theaterChase(strip.Color(127, 127, 127), 50); // White
theaterChase(strip.Color(127, 0, 0), 50); // Red
//theaterChase(strip.Color(0, 0, 127), 50); // Blue

//rainbow(20);
rainbowCycle(2);
//theaterChaseRainbow(50);

strip.clear();
strip.show(); // Initialize all pixels to ‘off’

Rtc.Begin();

Rtc.Enable32kHzPin(false);
Rtc.SetSquareWavePin(DS3231SquareWavePin_ModeNone);

if (!Rtc.GetIsRunning())
{
Serial.println(“Rtc was not actively running, starting now”);
Rtc.SetIsRunning(true);
}

if (!Rtc.IsDateTimeValid())
{
// Common Cuases:
// 1) the battery on the device is low or even missing and the power line was disconnected
Serial.println(“Rtc lost confidence in the DateTime!”);
}

byte eechk = EEPROM.read(0);
if(eechk == 0xAA) { //Assume this is our config and not a fresh chip
dimmer = EEPROM.read(1);
hmark = EEPROM.read(2);
fader = EEPROM.read(3);
}

timeSync();
}

void calcTime(void) {
utc = now();
CE.toLocal(utc, &tcr);
ohour = hour(utc);
ominute = minute(utc);
if(osecond != second(utc)) {
osecond = second(utc);
lastMillis = millis();

if(ominute == 0 && osecond == 0) {
//Every hour
timeSync();
}
}
}

void addPixelColor(byte pixel, byte color, byte brightness) {
color *= 8;
uint32_t acolor = brightness;
acolor <<= color;
uint32_t ocolor = strip.getPixelColor(pixel);
ocolor |= acolor;
strip.setPixelColor(pixel, ocolor);
}

void drawClock(byte h, byte m, byte s) {
strip.clear();

addPixelColor(m, 1, dimmer);

if(hmark > 0) {
for(byte i = 0; i<12; i++) {
addPixelColor((5*i), 2, hmark);
}
}

h %= 12;
h *= 5;
h += (m/12);
addPixelColor(h, 2, dimmer);
// 0x RR GG BB

if(fader) {
byte dim_s1 = dimmer;
byte dim_s2 = 0;
byte px_s2 = s+1;
if(px_s2 >= 60) px_s2 = 0;
unsigned long curMillis = millis()-lastMillis;
if(curMillis < 250) {
dim_s2 = 0;
dim_s1 = dimmer;
}else{
dim_s2 = map(curMillis, 250, 1000, 0, dimmer);
dim_s1 = dimmer – map(curMillis, 250, 1000, 0, dimmer);
}

// Add blue low intensity dots for 12(0),3, 6 and 9 O’çlock to verify where the clock is positioned..
addPixelColor(15, 128, 10);
addPixelColor(30, 128, 10);
addPixelColor(45, 128, 10);
addPixelColor(0, 128, 40);

addPixelColor(s, 0, dim_s1);
addPixelColor(px_s2, 0, dim_s2);
}else{
addPixelColor(s, 0, dimmer);
}

// add a background color
// setBrightness(Serial.parseInt());
// uint16_t j;
// for(j=0; j<60; j++) { // 1 cycles of colors on wheel
// strip.setPixelColor(j, Wheel(((j * 256 / strip.numPixels()) + j) & 255));
// }

strip.show();
}

byte rounds = 0;

void loop() {
calcTime();

if(rounds++ > 100) {
Serial.print(ohour);
Serial.print(“:”);
Serial.print(ominute);
Serial.print(“:”);
Serial.print(osecond);
Serial.println(“(C)JG-2020”);
rounds = 0;

}
//rainbow(21);
if (osecond == 59){theaterChase(strip.Color(0, 0, 127), 40); }// Blue; }
//if (ominute == 59 AND osecond == 59){theaterChase(strip.Color(0, 127, 0), 50); }// Green}
//if (ohour == 11 AND ominute == 59 AND osecond == 59){theaterChase(strip.Color(127, 127, 0), 50); }// Green}
else {drawClock(ohour,ominute,osecond);}

delay(10);

chkSer();
}

void timeSync(void) {
RtcDateTime dt = Rtc.GetDateTime();
setTime(dt.Hour(),dt.Minute(),dt.Second(),dt.Day(),dt.Month(),dt.Year());

Serial.print(“Synced to: “);
Serial.print(dt.Year());
Serial.print(“-“);
Serial.print(dt.Month());
Serial.print(“-“);
Serial.print(dt.Day());
Serial.print(“-“);
Serial.print(dt.Hour());
Serial.print(“-“);
Serial.print(dt.Minute());
Serial.print(“-“);
Serial.println(dt.Second());
}

void timeSave(void) {
utc = now();

RtcDateTime store = RtcDateTime(year(utc), month(utc), day(utc), hour(utc), minute(utc), second(utc));
Rtc.SetDateTime(store);

Serial.print(“Synced to: “);
Serial.print(year(utc));
Serial.print(“-“);
Serial.print(month(utc));
Serial.print(“-“);
Serial.print(day(utc));
Serial.print(“-“);
Serial.print(hour(utc));
Serial.print(“-“);
Serial.print(minute(utc));
Serial.print(“-“);
Serial.println(second(utc));

}

void setBrightness(byte brightness) {
dimmer = brightness;
}

void chkSer(void) {
unsigned int iy;
byte im,id,iH,iM,iS;

if(!Serial.available()) return;

switch(Serial.read()) {
case ‘b’:
setBrightness(Serial.parseInt());
Serial.print(F(“Brightness changed to: “));
Serial.println(dimmer);
EEPROM.put(0, 0xAA);
EEPROM.put(1, dimmer);
break;
case ‘t’:
iy = Serial.parseInt();
im = Serial.parseInt();
id = Serial.parseInt();
iH = Serial.parseInt();
iM = Serial.parseInt();
iS = Serial.parseInt();
setTime(iH,iM,iS,id,im,iy);
Serial.println(F(“System time changed”));
break;
case ‘f’:
fader = false;
EEPROM.put(0, 0xAA);
EEPROM.put(3, 0);
Serial.println(F(“Fader off”));
break;
case ‘F’:
fader = true;
EEPROM.put(0, 0xAA);
EEPROM.put(3, 1);
Serial.println(F(“Fader on”));
break;
case ‘m’:
hmark = Serial.parseInt();
EEPROM.put(0, 0xAA);
EEPROM.put(2, hmark);
Serial.println(F(“HMark changed”));
break;
case ‘s’:
timeSync();
Serial.println(F(“Synced RTC to System”));
break;
case ‘S’:
timeSave();
Serial.println(F(“Synced System to RTC”));
break;
default:
Serial.println(‘?’);
}
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}

void rainbow(uint8_t wait) {
uint16_t i, j;

for(j=0; j<256; j++) {
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel((i+j) & 25));//255
}
strip.show();
delay(wait);
}
}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
uint16_t i, j;

for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait);
}
}

//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
for (int j=0; j<4; j++) { //do 4 cycles of chasing
for (int q=0; q < 3; q++) {
for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, c); //turn every third pixel on
}
strip.show();

delay(wait);

for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}

//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel
for (int q=0; q < 3; q++) {
for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on
}
strip.show();

delay(wait);

for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r – g – b – back to r.
uint32_t Wheel(byte WheelPos) {
WheelPos = 255 – WheelPos;
if(WheelPos < 85) {
return strip.Color(255 – WheelPos * 3, 0, WheelPos * 3);
}
if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(0, WheelPos * 3, 255 – WheelPos * 3);
}
WheelPos -= 170;
return strip.Color(WheelPos * 3, 255 – WheelPos * 3, 0);
}

January 23, 2024

My mini shop

One of the 2nd floor bedrooms was converted into my 3.5×2 meters mini in-house workshop… The garage is used for my larger machines like the lathes, milling- and welding machines, laser cutter et cetera…

January 23, 2024

CNC pendant for Duet2wifi and Indymill

On the Duet support site a very good description and software for rebuilding a Chinese CNC-pendant for the Duet2wifi is available.

I used this description to program an arduino pro micro, and connect it to the pendant wired, place it inside the pendant and connected the pendant with 4 wires to the Duet. This works very well.

In the process, I developed some schematics that may be useful to you, available in this post:

Needed: an arduino pro micro and a pendant like this:

In the above picture, the coloured wires on the inside of the CNC pendant are shown. These wires need to be soldered to the correct pins of the Arduino pro micro (at the right)

January 23, 2024

Xmas star door/ window hanger Arduino nano and WS2812 LEDS

This Xmas- star measures 50cm in diameter from left- tip to right-tip. I printed it with glow in the dark ABS, white. It glows in very faint green, it is just enough to glow a little and keeps your eyes focused on the star when it is not lit.

If you make the star legs watertight with silicon sealant, the star can easily be attached to an outside wall, door or fence.

The power supply to the Arduino Nano is 5V DC.

You can use a long 3-wire cable between the Nano and the Xmas star to keep the electronics mounted inside the house and the star outside, or as I did: hang the star inside, in front of any window. I have the star hanging in my front door window, which gives amazing effect due to the non-transparant glass.

Or you can mount the Nano in a small watertight (3d printed) box close to the star and power the nano with 5V.

The programming can be altered to make the light effects behaviour any way you like. I usually have a non-stroboscopic fluent scene running.

You need to print 5 star points, feed the LEDs through them and then have the wires come out somewhere. You can glue the points together with hotglue or transparent silicone sealant after assembly and testing.

Solder the 3 wires of the WS2812 LED string to the Arduino Nano (5V to 5V, Gnd to Gnd and the Data IN of the LED string to D3 of the Arduino Nano. That’s it! After that you can connect the Arduino to your PC with a data USB cable and download the code from my website.

If you don’t have the Arduino IDE yet, download the app from the Microsoft website (Arduino IDE) nor from the Arduino cummunity forum.

Make sure you download my Arduino code and open it with the Arduino IDE APP. Probably the APP will have to move the arduino INO file to a new directory but that should do the trick. If not, start the Arduino app, open my code in notepad and copy/paste it as fully new code into Arduino: Replace the example code that automatically opens when you open the Arduino program/app with my code. Save it and rum it to see wether you need to add any library. For adding libraries, find general help in the Arduino forum. In my code, you can find the names of the required libraries.

In the Arduino IDE select the right microprocessor (Arduino Nano). Then select the correct processor version (large or small memory) and the old or new bootloader. These choices depend on the type of Nano you bought or still had lying around. Then you choose the right port (USB) for your Nano.

To test if you have connection between IDE and Nano , you can ask if the Arduino IDE can read your Nano. Only then you can start loading the Nano with the complicated program.

The BIG 70cm width 5-pointed star with thin hollow legs to put the WS2812 LED string through. AND an integrated tube to put the wiring through

Cheers!

The 3d print file for the BIG star is in my webshop HERE.

The Arduino programming file is HERE.

The STL files for the 50cm star are HERE.

January 23, 2024

OCTOWS2811, Teensy 1.4 & JINX 64×32 LED display

Het gebruik van een octoWS2811 is de eenvoudigste manier om een LED display te maken zoals hierboven getoond.

Om dit goed te laten werken moet je eerst een Teensy module flashen met de juiste firmware.

Daarna sluit je de teensy aan op de OCTOWS2811 connectormodule.

In de RJ45 bussen van de OCTOWS2811 module steek je 2 LAN kabels en het andere uiteinde sluit je aan op de ingang van de WS2812 LED modules.

Het maximum aantal aansluitingen op de LED matrices of van de DIY strings van WS2812’s is 2×4=8 (Octo).

Download en start vervolgens JINX.

Sluit de Teensy met de USB poort aan op je PC/Laptop.

Sluit je LED matrixen aan op een krachtige 5V PSU.

Controleer je bedrading.

Definieer je WS2812 setup in JINX (grootte X*Y, type richting, zigzag of anders, etcetera) zodat de output al correct geformatteerd zal zijn voor je setup.

Start elke uitvoer en test het. Indien niet OK, pas dan de setup aan van de LED matrix/buizen.

January 23, 2024

OpenCNC hardware driver board with 2x Arduino Mega mini controller and wifi controller box

This is the link to the board, user manual et cetera by Timo Altholtmann.

I bought 2 kits with all hardware for 2 driver boards and 2 wifi remote control units from Timo in November 2021.

Will update here how this progresses, as I intend to use this on either one of my 2 CNC routers AND on my Minimill.