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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.

bump switch

  1. S

    Replace Bump Switch With Laser Equivalent

    I have a machine that throws a tennis ball for my dog which is fine and works ok. The problem is that there is a sensor it uses to detect (simple diagram of a similar sensor here)when there is a ball ready to be thrown and when it gets dirty/wet it fails, usually after a couple of days, so it...

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