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.
I have an led and a picaxe 40x, can i put 3v into the anode and then attatch the cathode to an output pin and when i make the output low will it make the led come on? just dont wanna burn out my kit.
Yes you can but you need a current limiting resistor. The normal rule for a pic pin is that it can supply a maximum of 20mA and so you would need a series resistor of at least 200Ω. I normally use 330Ω.
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