Hi
What kind of transistor do you use? Part number? Please post schematics because this smells HW problem. Do you use MOSFET transistors perhaps without any pulldown restistors to the "Base"?
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Hi
What kind of transistor do you use? Part number? Please post schematics because this smells HW problem. Do you use MOSFET transistors perhaps without any pulldown restistors to the "Base"?
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The tris registers are set correctly.
The transistors are MPSA13. I dont use a pulldown resistor on them but i did try adding one and it had no effect. Even the outputs that dont connect to a transistor have this problem too.
Im just going to start the schematic now. It should be done soon
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Ive finished the schematic. Its not very good but hopefully youll be able to understand it
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Ive tried removing the PIC from the PCB and putting it in a breadboard. Ive connected wires for power, crystal and just 1 LED and i get the same problem. I even tried one of the LEDs that isnt also connected to a transistor.
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Hi, I figured out what the problem was. One of the tracks on the PCB wasnt connecting properly which meant the PIC didnt have ground at all so it was getting its ground through the LEDs that were off.
Sorry to bother you all and thanks for helping
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The Master , I also notice on your schematic that all of the led anodes on the bottom and the top of the drawing are tied to ground.....
Dave Purola
N8NTA
Last edited by Dave; - 1st July 2010 at 12:45.
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