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This is a combination of projects that I have developed. The ST7735S digital clock and the chiming clock. I have used The ST7735S 80x160 SPI colour display and timekeeper DS3231. The Chimes are played each hour on a DFPlayer Mini and a passive speaker, actual Big Ben chimes between 6am and 10pm and a cuckoo sound on the hour at all other times.
The power supply is a standard 5v breadboard type connected to the input pin of the Nano.
The ST7735S display is 3.3v so don't forget to use 220 ohm resistors on the SPI input pins.. SCL, SDA, RES, DC, and CS also 3.3v on VCC.
ST7735_Chiming _Clock_Code
ArduinoCompile using the Arduino IDE and Flash to the Arduino Nano. ( Make sure you temporarily remove at least one serial lead to the DFPlayer before flashing the Nano)
/* **************************************************************************
* Digital Clock Project using ST7735 80 x 160 (RGB) .96 inch IPS Display
* With an Arduino Nano and a DS3231 RTC
*
* Pin Used With The Arduino Nano :
* A5 SCL RTC
* A4 SDA RTC
*
* D5 RST ST7735
* D6 CS
* D7 DC
* D13 SCL/SCK *These markings are confusing*
* D11 MOSI/SDA
*
**************************************************************************
*/
#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>
#include <DFRobotDFPlayerMini.h>
#include <SPI.h>
#include <DS3231.h> //https://github.com/NorthernWidget/DS3231/releases
#include <Wire.h>
#define TFT_RST 5
#define TFT_CS 6
#define TFT_DC 7
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
DFRobotDFPlayerMini myDFPlayer;
DS3231 myRTC;
// inverted color definitions
#define BLACK 0xFFFF
#define WHITE 0x0000
#define BLUE 0x07FF
#define RED 0xFFE0
#define GREEN 0xF81F
#define YELLOW 0xF800
#define BROWN 0x9F6D
#define L_BLUE 0x51E4
byte L_Hour = 18; // Last Hour
byte L_Min = 43; // Last Minute
byte L_Sec = 10; // Last Second
byte L_Dow = 6; // Last Day Of The Week
byte L_Date = 11; // Last Date
byte L_Month = 11; // Last Month
byte L_Temp = 28; // Last Temperature
byte L_Year; // Last Year
byte YEAR = 20; // Year 2000
byte YEAR_2; // Last 2 digits of the year
byte Sec,Min,HOUR,Hour2,Dow,Date,MONTH,Temp; // Variables from RTC
bool h12Flag,pmFlag; //Unused 12h pm Flags
bool century = false;
String DAYS_OF_WEEK [] {"Dummy","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"};
void setup () {
Serial.begin(9600);
myDFPlayer.begin(Serial);
tft.initR (INITR_BLACKTAB);
Wire.begin();
tft.setRotation (3); // Display Lasdscape
tft.fillScreen (BLACK);
LinesDraw(); // Draw Lines Routine
MONTH = myRTC.getMonth(century);
if (century) { // Year 2100
YEAR = 21;
}
YEAR_2 = myRTC.getYear();
L_Year = YEAR_2;
TextDraw(); // Display All Screen Text
tft.setTextSize(3); // Time Text Size
}
void loop (){
Sec = myRTC.getSecond();
if (Sec != L_Sec) {
Sec_Print();
}
Min = myRTC.getMinute();
if (Min != L_Min) {
Min_Print();
}
HOUR = myRTC.getHour(h12Flag, pmFlag);
if (HOUR != L_Hour) {
Hour_Print();
}
Dow = myRTC.getDoW();
if (L_Dow != Dow) {
tft.setTextSize(2);
Dow_Print();
tft.setTextSize(3);
}
Date = myRTC.getDate();
if (L_Date != Date) {
tft.setTextSize(2);
Date_Print();
MONTH = myRTC.getMonth(century);
if (L_Month != MONTH) {
Month_Print();
YEAR_2 = myRTC.getYear();
if (YEAR_2 != L_Year) {
if (century) {
YEAR = 21;
}
Year_Print();
}
}
tft.setTextSize(3);
}
Temp = myRTC.getTemperature();
if (L_Temp != Temp) {
tft.setTextSize(2);
Temp_Print();
tft.setTextSize(3);
}
if ((Min == 59) && (Sec == 40)) {
Hour2 = HOUR +1;
chime();
}
}
void LinesDraw() { //Draw The Screen Borders
tft.drawLine(3,54,157,54,RED);
tft.drawLine(3,55,157,55,RED);
tft.drawLine(3,80,157,80,RED);
tft.drawLine(3,81,157,81,RED);
tft.drawLine(112,56,112,79,RED);
tft.drawLine(113,56,113,79,RED);
tft.drawRect(1,26,159,80,RED);
tft.drawRect(2,27,157,78,RED);
tft.fillRect(114,55,44,25,BROWN); // Temperature Box
}
void TextDraw() { //Set up Startup Screen
tft.setTextSize(3);
tft.setTextColor(WHITE);
tft.setCursor(10,30);
tft.print(L_Hour);
tft.print(":");
tft.print(L_Min);
tft.print(":");
tft.print(L_Sec);
tft.setTextSize(2);
tft.setTextColor(GREEN);
tft.setCursor(4 +((108-(DAYS_OF_WEEK [L_Dow].length())*12)/2),60);
tft.print(DAYS_OF_WEEK [L_Dow]);
tft.setTextColor(L_BLUE);
tft.setCursor(20,86);
tft.print("11/11/");
tft.print(YEAR);
tft.print(L_Year);
tft.setTextColor(YELLOW);
tft.setCursor(120,60);
tft.print("28c");
}
void Sec_Print () { // Print Seconds
tft.setTextColor(BLACK);
tft.setCursor(118,30);
if (L_Sec < 10) {
tft.print("0");
}
tft.print(L_Sec);
L_Sec = Sec;
tft.setTextColor(WHITE);
tft.setCursor(118,30);
if (L_Sec < 10) {
tft.print("0");
}
tft.print(L_Sec);
}
void Min_Print () { // Print Minutes
tft.setTextColor(BLACK);
tft.setCursor(64,30);
if (L_Min < 10) {
tft.print("0");
}
tft.print(L_Min);
L_Min = Min;
tft.setTextColor(WHITE);
tft.setCursor(64,30);
if (L_Min < 10) {
tft.print("0");
}
tft.print(L_Min);
}
void Hour_Print () { // Print Hours
tft.setTextColor(BLACK);
tft.setCursor(10,30);
if (L_Hour < 10) {
tft.print("0");
}
tft.print(L_Hour);
L_Hour = HOUR;
tft.setTextColor(WHITE);
tft.setCursor(10,30);
if (L_Hour < 10) {
tft.print("0");
}
tft.print(L_Hour);
}
void Dow_Print() { // Print Days Of The Week String
tft.setTextColor(BLACK);
tft.setCursor(4 +((108-(DAYS_OF_WEEK [L_Dow].length())*12)/2),60);
tft.print(DAYS_OF_WEEK [L_Dow]);
L_Dow = Dow;
tft.setTextColor(GREEN);
tft.setCursor(4 +((108-(DAYS_OF_WEEK [L_Dow].length())*12)/2),60);
tft.print(DAYS_OF_WEEK[L_Dow]);
}
void Date_Print() { // Print Date
tft.setTextColor(BLACK);
tft.setCursor(20,86);
if (L_Date < 10) {
tft.print("0");
}
tft.print(L_Date);
L_Date = Date;
tft.setTextColor(L_BLUE);
tft.setCursor(20,86);
if (L_Date < 10) {
tft.print("0");
}
tft.print(L_Date);
}
void Month_Print(){ // Print Month
// 56x 86y
tft.setTextColor(BLACK);
tft.setCursor(56,86);
if (L_Month < 10) {
tft.print("0");
}
tft.print(L_Month);
L_Month = MONTH;
tft.setTextColor(L_BLUE);
tft.setCursor(56,86);
if (L_Month < 10) {
tft.print("0");
}
tft.print(L_Month);
}
void Temp_Print() { // Print Temperature
tft.setTextColor(BROWN);
tft.setCursor(120,60);
if (L_Temp < 10) {
tft.print("0");
}
tft.print(L_Temp);
L_Temp = Temp;
tft.setTextColor(YELLOW);
tft.setCursor(120,60);
if (L_Temp < 10) {
tft.print("0");
}
tft.print(L_Temp);
}
void Year_Print() { // Print the Year
tft.setTextColor(BLACK);
tft.setCursor(91,86);
tft.print(YEAR);
tft.print(L_Year);
tft.setTextColor(L_BLUE);
tft.setCursor(91,86);
tft.print(YEAR);
L_Year = YEAR_2;
tft.print(L_Year);
}
void chime() {
myDFPlayer.volume(15);
switch (Hour2) {
case 6:
myDFPlayer.play(6);
break;
case 7:
myDFPlayer.play(7);
break;
case 8:
myDFPlayer.play(8);
break;
case 9:
myDFPlayer.play(9);
break;
case 10:
myDFPlayer.play(10);
break;
case 11:
myDFPlayer.play(11);
break;
case 12:
myDFPlayer.play(12);
break;
case 13:
myDFPlayer.play(1);
break;
case 14:
myDFPlayer.play(2);
break;
case 15:
myDFPlayer.play(3);
break;
case 16:
myDFPlayer.play(4);
break;
case 17:
myDFPlayer.play(5);
break;
case 18:
myDFPlayer.play(6);
break;
case 19:
myDFPlayer.play(7);
break;
case 20:
myDFPlayer.play(8);
break;
case 21:
myDFPlayer.play(9);
break;
case 22:
myDFPlayer.play(22);
break;
case 23:
myDFPlayer.play(23);
break;
case 24:
myDFPlayer.play(24);
break;
case 1:
myDFPlayer.play(13);
break;
case 2:
myDFPlayer.play(14);
break;
case 3:
myDFPlayer.play(15);
break;
case 4:
myDFPlayer.play(16);
break;
case 5:
myDFPlayer.play(17);
break;
}
}
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I've been interested in microprocessors for a long time.
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