Clock module - TM1637

TM1637 7 segment display example

A few of the code examples and projects on this site use modules containing the Tm1638 driver chip, I was interested in this one which is the TM1637 which appears to be a more basic version which can only control a display, the other one can also control LEDs, buttons and two displays at the same time.

This is a common anode 4-digit tube display module which uses the TM1637 driver chip; Only 2 connections are required to control the 4-digit 8-segment displays

Here is the module

Features of the module

• Display common anode for the four red LED
• Powered supply by 3.3V/5V
• Four common anode tube display module is driven by IC TM1637
• Can be used for Arduino devices, two signal lines can make the MCU control 4 8 digital tube. Digital tube 8 segment is adjustable

Here is how to hook the module up

Code Example

There is a library for this IC, you can get it from https://github.com/avishorp/TM1637 , as usual there is a built in example but here is a simple sketch

#include <TM1637Display.h>
 
const int CLK = 3; //Set the CLK pin connection to the display
const int DIO = 2; //Set the DIO pin connection to the display
 
int numCounter = 0;
 
TM1637Display display(CLK, DIO); //set up the 4-Digit Display.
 
void setup()
{
display.setBrightness(0x0a); //set the diplay to maximum brightness
}
 
 
void loop()
{
for(numCounter = 0; numCounter < 1000; numCounter++) //Iterate numCounter
{
display.showNumberDec(numCounter); //Display the numCounter value;
delay(1000);
}
}