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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.

Infra Red Card ID reader

Wes00

New Member
Just wanted to make sure if this can be done.
Basically 8 IR tx and rx. The transmitter would transmit 5VDC. At the receiver using a TL071 Op-Amp to bring back the signal to 5VDC.
A card with holes would let a unique bit patern through when insterted between the IR tx and rx.
 

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