One of the most commonly asked Arduino-related questions is how to write one’s programs in such a way that they can accommodate an overflow/wraparound condition in the millis() function. One of the ...

Welcome! This is my solution for using the millis function to create a clock. Keep in mind that the oscillator of the arduino is not very preciced. I recommend to use a real-time-clock if you got the ...

It’s possible to write one’s programs in such a way that they can accommodate an overflow/wraparound condition in the millis() function, but how does this actually work? It’s possible to write one’s ...

環境Arduino Uno Arduino IDE 2.0.3 3端子レギュレータ（LM7912L） 3端子レギュレータ定格3Vのウォーターポンプに12Vの電源を使いたい。3端子レギュレータで電圧を下げられると見たのでやってみる。 回路図 結果 出力電圧が小さすぎてモーターが回らなかった。

After 49 days of running, the millis() timer wraps and SimpleTimer will be broken (it will fire at wrong time). The solution is to use "unsigned long" for all ...