lamaPLC: TM1637 7-segment display

The TM1637 module is a driver for 4-digit 7-segment displays. These chips are standard in inexpensive display units. They communicate with the processor using an I²C-like protocol. The implementation relies entirely on software emulation and uses no specialized hardware, aside from GPIO pins. It is assumed that pull-up resistors are present, typically integrated into the display module.

• Operating voltage: 3.3 – 5 V DC
• Maximum current draw: 80mA
• Reverse polarity protection: Yes

Install the TM1637Display library by Avishay Orpaz through the Arduino IDE Library Manager (Sketch > Include Library > Manage Libraries…)

This code initializes the display, sets the brightness, and loops through a simple counter.

#include <TM1637Display.h>
 
// Define the connections
#define CLK 2
#define DIO 3
 
// Create a display object
TM1637Display display(CLK, DIO);
 
void setup() {
  display.setBrightness(0x0f); // Set brightness (0x00 to 0x0f)
  display.clear();             // Clear the display
}
 
void loop() {
  // Show a static number
  display.showNumberDec(1234);
  delay(2000);
 
  // Counter loop
  for (int i = 0; i <= 100; i++) {
    display.showNumberDec(i);
    delay(100);
  }
 
  display.clear();
  delay(1000);
}

Arduino Doc TM1637 library

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