Get your ElectroBOOM Bundle at https://www.circuitspecialists.com/electroboom-101-kit.html and start experimenting electronics at lower price! You can use this circuit to prank, or you could use it as intruder alarm, light switch based on room light, or whatever else! It is a useful circuit. Just be careful around high voltage! My new MERCH: null Thanks for your support @ http://patreon.com/electroboom Post your submissions to: http://reddit.com/r/electroboom My Facebook: http://www.facebook.com/ElectroBOOM My Twitter: http://twitter.com/electroboomguy My other articles: https://www.electroboom.com/ Thanks to http://CircuitSpecialists.com/ and http://keysight.com/ for proving my essential lab tools and giveaways. Checkout my Amazon picks (my affiliate link): https://www.amazon.com/shop/Electroboom Below are my Super Patrons with support to the extreme! Nicholas Moller at https://www.usbmemorydirect.com/ Sam Lutfi J4yC33 My sponsors and top patrons: http://www.electroboom.com/?page_id=727 Enter your school for tools: https://goo.gl/forms/VAgRre8rLVvA1cEi2 By: Mehdi Sadaghdar