Flip Display for Temperature

[jasonacox]

Incoming question:

I want to display temperature, and I want to turn the display upside down so I can use dot as degree and fourth digit to display C. So I want to display 'C on the fourth segment all the time.

For degree C, I usually use the built-in degree mark - See code example: https://github.com/jasonacox/TM1637TinyDisplay/blob/a4d07fba0cef792d5c87a0cac013a9f28070146f/examples/TM1637Demo/TM1637Demo.ino#L384-L389

If you want to flip the display, use the function: flipDisplay() See: https://github.com/jasonacox/TM1637TinyDisplay/blob/a4d07fba0cef792d5c87a0cac013a9f28070146f/TM1637TinyDisplay.h#L136-L142

To set the “dot” you can use showNumberDec() See: https://github.com/jasonacox/TM1637TinyDisplay/blob/a4d07fba0cef792d5c87a0cac013a9f28070146f/examples/TM1637Test/TM1637Test.ino#L220-L224

[jasonacox]

I think you did not realize what I really wanted. I want to use the decimal dot as a degree symbol. I did it with 2 digits, but when i use 3 digits dot disappears. You can see it in the images below and you can see code too.

#include <Arduino.h>
#include <TM1637TinyDisplay.h>

// Define the connections pins
#define CLK 9
#define DIO 8

TM1637TinyDisplay display(CLK, DIO);

void setup() {
   display.setBrightness(4); // Set brightness level (0-7)

  // Flip the display upside down
  display.flipDisplay(true);

  // Display 'C' with a decimal dot on the 4th digit
  uint8_t segments[] = {0x00, 0x00, 0b10000000, 0b00111001 }; 
  display.setSegments(segments);
}

void loop() {

  display.showNumber(22, false, 2, 0);  
  delay(1000); // Wait for 1 second

  display.showNumber(111, false, 3, 0);  
  delay(1000); // Wait for 1 second

}

[jasonacox]

Hi Filip,

You actually need to set the decimal on the third number, not on the "C". When you do the second showNumber() call, it erases the decimal.

You need to set the decimal when you set the number:

  k = 3; // Location for decimal
  display.showNumberDec(111, (0x80 >> k), false, 3, 0);