Incredible Life Hacks -DIY Easy Laser Alarm
50 بار بازدید -
6 سال پیش
-
Homemade laser alarm made with
Homemade laser alarm made with basic components like npn transistor 2n3904 or bv 547,one led and buzzer,one photoresistor and 2kohm resisitor,The circuit is powered by 9v battery and laser module is powered with 3v dc.
6 سال پیش
در تاریخ 1397/10/05 منتشر شده
است.
50
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