久しぶりに SwitchBot Relay Switch 1 および SwitchBot Relay Switch 1PM（Power Measurement）についてメモ書きを認めます。 二つのリレースイッチのうち、交流および直流で駆動可能な SwitchBot Relay Switch 1 は凡そ次のような配線で動作します。（出力側がドライ接点。） （図 ...

This light activated relay circuit presented here uses the 555 timer IC and a light dependent resistor or LDR to form a light sensitive relay in an intruder alarm system or for switching on a lamp at ...

I would like to turn on my car's heated seats over a mobile/cellular network using my iPhone, and I'm trying to figure out the simplest path. I know very little beyond that goal, but I know that RF, ...

Arduino program to handle relays and control them using switches with support for double-click and long-press. Integration with home automation systems is possible through MySensors integration over ...

Federal and international regulations require boats to carry lights between sunset and sunrise and during conditions of restricted visibility. The number and colours of the lights vary with the size ...