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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

projects

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cool-agent

New Member
hi, I was looking for a project that I found but I dont undertsand if you wana see it then **broken link removed**
I want to know how it works and where can i get the componanats
 
countdown timer

guys,
I want to make a countdown timer with start/stop and reset buttons. Can anyone give me a schematic diaram please.
 
not sure if what U want?

I have a drag racing type start tree w/ 2 blue lights,3 yellow lights, a green light and one red light (per lane).
Built for pinewood derby racing. If you hit the "gas button" before the green light then the red light comes on. About 1 second between lights.Reset and go again
works real well
Look at 4017 circuits for simple count down circuits.
 
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