Arduino Project # 4. Countdown on indicator

Arduino project. Countdown

Today I created an Arduino project with digits on indicator.

Scheme you can see on the main picture of this post. We’ll need an indicator, 8 resistors (330 Ohm), cables. We’ll use digital pins from 2 to 9 and one ground (GND) because indicator is cathode type.

Materials for countdown Arduino project
Materials for countdown Arduino project

Video here:

Code here:

Version 1

Version 2

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