Uploaded May 2017 | Updated September 2026, 2 hours ago
This is a laser alarm security circuit using 555 timer IC.
You can adjust alarm time. (after laser beam restored)
The schematic is in the video.
555 타이머 IC 를 이용한 레이저 알람 회로입니다.
(레이저가 복구된 후) 알람 시간을 조절할 수 있습니다.
회로도는 영상에 등장합니다.
This is a laser alarm security circuit using 555 timer IC.
You can adjust alarm time. (after laser beam restored)
The schematic is in the video.
555 타이머 IC 를 이용한 레이저 알람 회로입니다.
(레이저가 복구된 후) 알람 시간을 조절할 수 있습니다.
회로도는 영상에 등장합니다.










![[renewal] How to make an Auto Click Mouse Circuit
This is an automatically click mouse circuits.(Occasional click circuit and Fast click circuit)
Occasional Click circuit is automatically clicked 0.12 seconds every 1:54 minutes.
Fast Click circuit is 10 times click per 1 second.
The click time can be changed by changing the resistor and capacitor.
Occasional Click Circuit Diagram : 05:10
Fast Click Circuit Diagram : 08:37
Click Time Test : http://kor.pe.kr/make/electronics/Automatic_click_mouse/Click_time.htm [renewal] How to make an Auto Click Mouse Circuit](https://i.ytimg.com/vi/TORksFPgMEw/mqdefault.jpg)