Soldering hacks & NEW LED PROJECTS #4K #led 

@Electro-Crafting
Liked the video, please share it with your friends. Thank you.
00:00 - 00:18 The LED Fire alarm
00:19 - 00:43 Non-contact voltage detector
00:44 - 00:55 The BUZZER Fire alarm
00:56 - 01:05 IF Tester

Наука