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Touch Activated Alarm Circuit by IC Timer 555 | 1 view(s)

>ElectroSuite.com>> – Touch Activated Alarm Circuit by IC Timer 555. This is a touch activated alarm system. Your alarm system will be activated when someone touching the “trigger”. You may use this circuit at your home door, your vehicle etc.

Parts list:

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  • R1 = 100K
  • R2 = 56K
  • R3 = 10M
  • R4 = 220K
  • P1 = 100K
  • D1 = 1N4004
  • T1 = 2N3904, or equivalent
  • U1 = 555 Timer*
  • C1 = 47μF/16V**
  • C2 = 33μF/16V**
  • Re1 = R

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  • http://juansmavo.blogspot.com juan

    mas, ini nanti cara inputnya gmana??
    klo pemicunya diganti dengan sebatang besi atau plat tembaga gitu bisa ga?
    apa harus dipasang sensor sentuh lagi?
    mohon penjelasannya

  • http://electrosuite.com ElectroSuite.com

    you can change with other metal. The electric from our body will trigger the pin 2 of ic 555