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.
Sorry about that, torben. I didn't meant to give my homework for others to do.
I will trye to ansuer those questions. That circuit is suposed to detect the presense of a person and then produce a sound in the speaker that is the alarm. Now i realise that the ldr detects the presence, but how...
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