ARDUINO 10 SECOND TIMER
I created Arduino 10 second timer using breadboard, Arduino UNO board, 9 red LED's, 9 20 ohm resistors and jumpers. 9 LED's are arranged in a 3x3 matrix. LED's glow in such a way that they represent a number from 9 to 0 hence the 10 second timer! Enjoy the video!
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