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.
I need to make a relay cascade for a project. One button to click the four LEDs on one after another, and another button to turn them off in reverse order.
I saw something like this in an electronic book, but can't find it.
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