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.
Do you mean to detect intruders coming onto your drive?
The simplest way is to use a passive IR detector as used in burglar alrms. They can detect heat from vehicle engines or from humans.
Try this place: **broken link removed** This is an entire project based around an IR motion detector. I always say this, and no one does it for me. But, let me know if that works. :wink:
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