TM1637 7 segment display example

A common display module that you can buy on the internet contain 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 TM1638 can also control LED’s, 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

Parts List

Here are the parts I used

Connection

Here is how to hook the module up, the good news is this worked with my Wemos Mini and 3.3v

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 = D6; //Set the CLK pin connection to the display
const int DIO = D5; //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);
 }
}

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