This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push ...

Here is a simple, yet useful circuit of an Arduino 4-digit 7-segment LED display unit ... of microcontroller pins necessary to control a display into just eleven or twelve (in place of thirty-two)!

We used a Charlieplexed display to arrange the LEDs in the required two-digit, seven-segment format, which would serve our purpose (Fig. 2). We chose 3mm, high-brightness LEDs. Each segment of the ...