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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.

#traffic lights

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    [HELP 4 WAY- TRAFFIC LIGHT] Can someone tell me what is wrong with our schematic?

    When we run it through the Circuit wizard it goes without errors but when we imply it on a breadboard it is stuck on "4", it doesn't countdown.

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