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.
Is it possible to wire a photocell in sutch a way, when light is on it, nothing will happen, but when the light is broken, it sets an alarm off or something?
Is it possible to wire a photocell in sutch a way, when light is on it, nothing will happen, but when the light is broken, it sets an alarm off or something?
Yep. It is often called a "beam-break trigger", "dark detector", "dark alarm", or various other names along those lines. You can google those terms or search this site; it's been discussed a few times.
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