How To Make Your Own Laser Security Circuit Tutorial - PART 3 - Adding A Relay & Siren!

3,740 views · Published 20 January 2013 · 9:22 · Indexed 20 September 2026

Channel: patrickikis · 2013 · Science & Technology

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Another Tuturial By: www.engineeringshock.com & www.electroniclessons.com

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