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Make a cheap electronic detonator!

 
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Alan
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Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Mon May 15, 2006 5:12 pm    Post subject: Make a cheap electronic detonator! Reply with quote

"You can use this to detonate a sonic grenade, firework, lights, anything! Super cheap and reliable, $5 project.

Step 3 Building.

-This is where the fun starts, smash open the clock and the and locate the wires running to the tiny alarm speaker.
-This will be a low voltage out put so you will have to connect those wires through a relay to allow a higher voltage (usually 4.5V) to be sent to the personal alarm. otherwise it will not be loud enough.
-Carefully smash open the alarm (you will need to preserve part of the case, because the speaker needs to vibrate in it to amplify the noise)
connect the wires to the alarm speaker to the relay (note the correct polarity)

This is pretty much it, set the alarm clock to go off at a certain time, and its output will be sent to the relay, which will set off the alarm!!! This makes a great alarm clock for someone that doesnt like to wake up!!!"

http://www.instructables.com/ex/i/2B35704E34F11029BC6B001143E7E506/?ALLSTEPS

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