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[CODE] Arduino 4 BIT LED binary counter

Here’s my “Hello World” on Arduino.
A 4-bit binary counter for arduino.
If you add another LED on the 5th pin, then it can count from 0 to 31 (32 values)

Circuit wired by @KataySantos

[pastacode lang=”c” manual=”int%20counter%20%3D%20-1%3B%0Aint%20MAX_VALUE%20%3D%2016%3B%0A%0Avoid%20updateLED(int%20pin%2C%20int%20bit%2C%20int%20ctr)%20%7B%0A%20%20digitalWrite(pin%2C%20(ctr%20%26%20(1%3C%3Cbit))%20%3D%3D%20(1%3C%3Cbit)%20%3F%20HIGH%20%3A%20LOW)%3B%0A%7D%0Avoid%20setup()%20%7B%0A%20%20%2F%2F%20this%20runs%20once%0A%20%20pinMode(1%2C%20OUTPUT)%3B%0A%20%20pinMode(2%2C%20OUTPUT)%3B%0A%20%20pinMode(3%2C%20OUTPUT)%3B%0A%20%20pinMode(4%2C%20OUTPUT)%3B%0A%7D%0A%0Avoid%20loop()%20%7B%0A%20%20%2F%2F%20this%20runs%20repeatedly%0A%20%20counter%20%3D%20(counter%20%2B%201)%20%25%20MAX_VALUE%3B%0A%20%20updateLED(1%2C%200%2C%20counter)%3B%0A%20%20updateLED(2%2C%201%2C%20counter)%3B%0A%20%20updateLED(3%2C%202%2C%20counter)%3B%0A%20%20updateLED(4%2C%203%2C%20counter)%3B%0A%20%20delay(500)%3B%0A%7D” message=”” highlight=”” provider=”manual”/]

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