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Help me make a light watch for a prank! Answered

For reference, here is a video:  http://www.youtube.com/watch?v=G5zCiBeQxRI&list=UUCsj3Uk-cuVQejdoX-Pc_Lg&index=3&feature=plcp

Can someone help me with making a watch that can make a big flash on command for doing pranks like these. He has someone near his wrist, and I want it to be a watch if possible. How can I begin, I just need ideas. Could it ever be wireless, or how should I do it?

Thanks!

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ddemayo

7 years ago

https://www.instructables.com/id/Quick-button-Super-Bright-LED/

Here is a quick concept of what you need to make you can easily put this in a watch husk and strap the battery to your wrist. Sorry about the quick instructable im kinda busy today but i threw this together for you.

The video just shows the LED lighting up towards the end my alligator clip fell off the lead so i had to fix it while i was filming thats why it goes black for a few seconds.