After compiling and uploading a sketch, a digitalRead of a pin or an interrupt on a pin will do what it is supposed to. After a deepSleep(), the same event will reset the ESP8266. This example was ...

この記事は、別記事「PCDJ用MIDIコントローラーをArduinoで自作する（その①：立志編）」の姉妹記事です。お姉さんにあたる①では、今回のコントローラー製作の全体像がわかるので、ぜひそちらもご覧ください。 元記事でもちらっと書きましたが、僕自身 ...

Seeeduino XIAOのdigitalReadを高速化したいので、レジスタから読み出すように変更すると3倍ほど早くなった。シングルサイクルIOを使用すると5倍ほどはやくなった。 Arduino DIO高速化に関する記事は探すといっぱい出てきて正規？のArduinoではdigitalReadの代わりにPINx ...

Hi, I have noticed a serious issue on digitalRead () on any pin. I have a system with a 47k pull-down resistor, and a switch that pull the pin high. However, I noticed that if I don't run the ...

In the previous lesson, we looked at how to use a pin as a digital Output using DDRX and PORTX registers. In this lesson we shall look at how to use a pin as an INPUT and we shall use the push button ...

Joe is a graduate in Computer Science from the University of Lincoln, UK. He's a professional software developer, and when he's not flying drones or writing music, he can often be found taking photos ...

You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the button is not pressed and 1 that the button is ...