RTC freezes

[ejmorgan55]

Running a clock based on this library example and a DS3231 RTC. I am using a multiplexer to send to different displays. After about an hour or so; the RTC sets to 0 and freezes. If I unplug and reapply power; the clock comes back on; albeit, minus the period of time it was frozen. I get no error messages. Originally running a nano and though it might be a memory problem; switched to the Mega and still have the same problems, Thought it might be wiring; however, does the same thing on a breadboard as it does on the physical clock. Any thoughts?

//PhoNixieClock

include

include

include

include

int digit1 = 0; int digit2 = 0; int digit3 = 0; int digit4 = 0; int digit5 = 0; int digit6 = 0;

define SCREEN_WIDTH 128

define SCREEN_HEIGHT 32

define DS3231_I2C_ADDRESS 0x68

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

// Select I2C BUS void TCA9548A(uint8_t bus){ Wire.beginTransmission(0x70); // TCA9548A address Wire.write(1 << bus); // send byte to select bus Wire.endTransmission(); Serial.print(bus); }

void setup() { Serial.begin(9600); RTC.begin();

setSyncProvider(RTC.get);{   // the function to get the time from the RTC
  //setTime(13,49,00,14,1,2022); // Sets date-time  
if(timeStatus() != timeSet)
    Serial.println("Unable to sync with the RTC");
else
    Serial.println("RTC has set the system time");
}

// Start I2C communication with the Multiplexer Wire.begin();

display.setRotation(1);

// Init OLED display on bus number 2 TCA9548A(2); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } // Clear the buffer display.clearDisplay();

// Init OLED display on bus number 3 TCA9548A(3); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } // Clear the buffer display.clearDisplay();

// Init OLED display on bus number 4 TCA9548A(4); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } // Clear the buffer display.clearDisplay();

// Init OLED display on bus number 5 TCA9548A(5); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } // Clear the buffer display.clearDisplay();

 //Init OLED display on bus number 5

TCA9548A(6); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } //Clear the buffer display.clearDisplay();

 // Init OLED display on bus number 5

TCA9548A(7); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } //Clear the buffer display.clearDisplay();

}

void loop(){

digit1 = (hour()%10); digit2 = ((hour()/10)%10); digit3 = (minute()%10); digit4 = ((minute()/10)%10); digit5 = (second()%10); digit6 = ((second()/10)%10);

// Write to OLED on bus number 2 TCA9548A(2); display.clearDisplay(); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 0); // Display static text display.println(digit2); display.display();

// Write to OLED on bus number 3 TCA9548A(3); display.clearDisplay(); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 0); // Display static text display.println(digit1); display.display();

// Write to OLED on bus number 4 TCA9548A(4); display.clearDisplay(); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 0); // Display static text display.println(digit4); display.display();

// Write to OLED on bus number 5 TCA9548A(5); display.clearDisplay(); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 0); // Display static text display.println(digit3); display.display();

 // Write to OLED on bus number 5

TCA9548A(6); display.clearDisplay(); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 0); // Display static text display.println(digit6); display.display();

// Write to OLED on bus number 5 TCA9548A(7); display.clearDisplay(); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 0); // Display static text display.println(digit5); display.display();

delay(100); }

[JChristensen]

Hello @ejmorgan55,

Where did the RTC come from, i.e. where did you buy it?

[JChristensen]

Nothing heard; closing issue.