Re: Unable to get SIO card working
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Hi Morgan,
Can you measure the current draw?? Should be about 200mA I think?? If it's too high, try removing the UART chip, it may be faulty? Try other chips, remove one at a time.
If you are in Canada you are welcome to mail me the board if we get stuck.? Or even come visit me if you're near Toronto.
Cheers,
Josh
On Friday, September 18, 2020, 06:59:04 a.m. EDT, mhtbx118@... <mhtbx118@...> wrote:
Hello everyone, hope you're having a fine day!
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I just picked up this kit a few weeks ago and I haven't been able to get the SIO card working. The front panel and CPU card work fine together but if I have the SIO card installed nothing seems to work. I have tried it with and without the front panel card.
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When I plug the SIO card in the only thing that happens is the LEDs flash a few times then stay on or turn off. Nothing comes out over the terminal connection (assuming the setting are the same as the front panel settings, which work fine). As for troubleshooting, I have checked to make sure there is no solder bridges that are obvious, and I tried to reflow the joints to be sure I didn't mess any up. I reseated the socketed chips and made sure that there was continuity between the pins and the solder joints on the underside of the board. I did replace R6 in a really stupid way because I somehow missed that it was supposed to look like it did. I honestly don't know how I missed that considering all the times I read through trying to figure out where I went wrong. Hopefully I didn't screw it up worse with that.
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I've swapped the files on the SD card multiple times to make sure I didn't mess that up but I've had no luck with that.
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And at this point I have exhausted my ability to troubleshoot and I'm hoping someone here can give me a hand in getting this running. I'm sure its going to be something stupidly simple because I always miss the easy stuff.
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I have some closeups of my boards if anyone wants to see them to make sure its not a stupid mistake:?
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Thanks for any help you can give!
Morgan
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