Theburrito Posted March 17, 2007 Report Posted March 17, 2007 I ordered all the parts for a Midibox SID and after putting them together, all i get is a steady 5v from the output of the PIC, which is labeled "BSL v1.2B mios v1.9D". i checked all the powered pins, and they're all fine. any suggestions? Quote
TK. Posted March 17, 2007 Report Posted March 17, 2007 With preinstalled MIOS it's normal that you get only a single upload request during power-on.Accordingly the MIDI Out stays at 5V so long nothing is sentBest Regards, Thorsten. Quote
Theburrito Posted March 17, 2007 Author Report Posted March 17, 2007 ok, i tried uploading something and it failed, perhaps just a bad midi connection, will recheck and try again. Thanks Quote
Theburrito Posted March 17, 2007 Author Report Posted March 17, 2007 well, i hooked it back up and tried to upload a few things with MIOS studio but it didn't work, the only message that comes from the midibox is "system reset" on power on, i don't acctually get any other response from it. I'm pretty sure regardless of having mios on it or not its supposed to send an upload request on power on. Any suggestions? Quote
TK. Posted March 17, 2007 Report Posted March 17, 2007 I would propose to continue with the MIDI troubleshooting guide - which one of these tests is working, which one not?http://www.ucapps.de/howto_debug_midi.htmlBest Regards, Thorsten. Quote
Theburrito Posted March 20, 2007 Author Report Posted March 20, 2007 well i don't have a pic programmer, and i couldn't find instructions on how to make one for an 18f452. all the other tests indicated everything was normal, voltages, midi works on computer end, proper componets and soldering is fine. So the only thing i can think of is the pic needing reprogramming. Quote
TK. Posted March 20, 2007 Report Posted March 20, 2007 It can be assumed, that the PICs from SmashTV are programmed properly, otherwise you wouldn't have MIOS preinstalled - MIOS has been uploaded via MIDI (this is a great quality assurance :))So, voltages are ok, connections are ok, it must be any other hardware related problem. Maybe the crystal or the 33pF caps?Best Regards, Thorsten. Quote
smashtv Posted March 20, 2007 Report Posted March 20, 2007 it must be any other hardware related problem.Another couple of common ones:Is the optocoupler inserted in the right direction?Is the D1 in the right direction?The PIC did say "Ready." to me and give the correct single upload request before I packed it.Hoping it's something easy and simple. ;)Best RegardsSmash Quote
Theburrito Posted March 20, 2007 Author Report Posted March 20, 2007 tried swapping round the diode and the optocoupler, no change. the caps should be fine, i have no way of checking the crystal, but being as it came with the kit i shouldn't have any reason to think that its damaged or wrong. Quote
doc Posted March 21, 2007 Report Posted March 21, 2007 The PIC did say "Ready." to meHey Tim,I always was quite sure that you speak with your PICs !! ;DDoc Quote
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