hemanteda
Member level 1
Hi all,
I'm using a PIC18F4520 to control a matrix of LEDs (144 nos.) 16 x 9 configuration (PORT B and D for positive, available pins of port A and C for negative). The oscillator is a 32Mhz crystal (I tried an 8MHz too). The board is fairly big (20 inches by 12 inches) so the tracks are long and all over the place. I'm not using and latches or resistors. I know my design is not the best
The board dosent seem to work! I feel that the first few lines of code work and somehow it gets reset. I've disabled WDT and brown out. This is the first time I've designed such a large board, I've designed and used small boards with PICs without any issues.
Any help and advice is appreciated.
Thanks
I'm using a PIC18F4520 to control a matrix of LEDs (144 nos.) 16 x 9 configuration (PORT B and D for positive, available pins of port A and C for negative). The oscillator is a 32Mhz crystal (I tried an 8MHz too). The board is fairly big (20 inches by 12 inches) so the tracks are long and all over the place. I'm not using and latches or resistors. I know my design is not the best
The board dosent seem to work! I feel that the first few lines of code work and somehow it gets reset. I've disabled WDT and brown out. This is the first time I've designed such a large board, I've designed and used small boards with PICs without any issues.
Any help and advice is appreciated.
Thanks