Hi,
I was trying to control an 5x7 LED dot matrix using a pic 16f627 with transistors. I was able to light the LED's by directly connecting transistors to ground and +5v so I'm pretty confident that side of things is okay. However when I connected a 1k resistor between each transistor and a pin on the pic and ran some simple code my pic broke and could not be reprogrammed. I think too much current was drawn through the pic but I don't know why, I'd be very grateful if someone could explain my mistake.
I had it wired like this:
Parts:
Thanks
I was trying to control an 5x7 LED dot matrix using a pic 16f627 with transistors. I was able to light the LED's by directly connecting transistors to ground and +5v so I'm pretty confident that side of things is okay. However when I connected a 1k resistor between each transistor and a pin on the pic and ran some simple code my pic broke and could not be reprogrammed. I think too much current was drawn through the pic but I don't know why, I'd be very grateful if someone could explain my mistake.
I had it wired like this:
Parts:
Thanks