Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

Basic motion sensing setup using Arduino, PIR sensor, LEDs, and push button for interaction & Motion-triggered alarm system with Arduino, PIR sensor, piezo buzzer, and LED alert. // first pic This ...

不久前已有自己嘗試實作的念頭, 在沒有專門做 LED Driving IC 及手頭上有限的零件條件下, 初步總算完成了. 最初設定的目標: 1. 螢幕能顯示中文字或中文句子. 2. 螢幕上文字能簡單移動. 3. 電腦那邊 ...