Introduction: 4 Digit Two Wire Display With Arduino

About: I am an American teaching English at Shangluo University, Shaanxi. I like making machines that do interesting but fairly useless things - I call them Quixotic Machines.

I was working on a project where i needed a 4 digit display but when I went to connect it to the Arduino all I found were articles about having to wire up 12 plus pins. Then I found this Suli library which makes it so simple a dummy like me can wire it up with two pins (digitial 2 and digital 3).

Stuff needed:

Grove TM1637 4 Digit display

Suli library

Four_Digiit_Display_Suli library

Step 1: Connect Display to Arduino

If you have an Arduino with an I2C two wire plug then it's a no brainer.

I only had an Uno so connect display vcc to 5v, gnd to gnd, DIO to Arduino digital pin 2, and CLK to Arduio digital pin 3.


Step 2: Download Libraries

Get Suli library here:

Now I did have a problem running the demo until I copied the cpp and header files from

here: (Guess they had updates).

Get Four_Digit_Display here:

Hope you know how to install libraries.

Run the Four_Digit_Display demo in the Examples file.

Rock on!