plasmaninjaa
Member
Hi,
I am using 3 common anode 12v rgb led strips.
I have been successful in pwming them for different colors using an npn transistor. I have each of their red, green, and blue pins connected together so each of the 3 strips are essentially connected together and doing the same thing.
But now, I want to turn each one of the 3 strips on or off individually (while they are still all receiving the same pwm signal).
I thought throwing a pnp transistor between the +12v and the anode of each strip and controlling them with a HIGH or LOW from the picaxe would work, but it doesn't.
After a few seconds, the picaxe gets very hot.
Could someone point out the obvious flaw in my circuit? I am really not sure whats going on here.
I think it might be because I am not using resistors in the circuit, but if that is the reason it isn't working, I don't know what values to use or where to put them.
Here is my setup as of now:
I am using 3 common anode 12v rgb led strips.
I have been successful in pwming them for different colors using an npn transistor. I have each of their red, green, and blue pins connected together so each of the 3 strips are essentially connected together and doing the same thing.
But now, I want to turn each one of the 3 strips on or off individually (while they are still all receiving the same pwm signal).
I thought throwing a pnp transistor between the +12v and the anode of each strip and controlling them with a HIGH or LOW from the picaxe would work, but it doesn't.
After a few seconds, the picaxe gets very hot.
Could someone point out the obvious flaw in my circuit? I am really not sure whats going on here.
I think it might be because I am not using resistors in the circuit, but if that is the reason it isn't working, I don't know what values to use or where to put them.
Here is my setup as of now:
