rEApZ Posted October 25, 2017 Report Share Posted October 25, 2017 Hey guys, After a bit of troubleshooting I thought I would post here to see if anyone could help. I have two MBHP_MIDI_IO modules connected to my MBHP_CORE_STM32F4. All of the Input/Outputs of the first MBHP_MIDI_IO work but on the second MBHP_MIDI_IO (which is daisy chained to the first) all work apart from OUT3. After checking the IC's and all the soldering etc I swapped the MBHP_MIDI_IO boards around and still OUT3 was not working (this time it was on the other MBHP_MIDI_IO). So both boards are working but for some reason OUT3 is not getting any output. On the Midibox Seq MIDI monitor it looks like data is being sent out but nothing arrives at the output. Anyone know what might be the issue here? Cheers, Steve Quote Link to comment Share on other sites More sharing options...
latigid on Posted October 25, 2017 Report Share Posted October 25, 2017 (edited) Check continuity from pin PC6 on the Disco board to R3 on the second MIDIO. This will resolve any cable interconnection issues. Edited October 25, 2017 by latigid on 1 Quote Link to comment Share on other sites More sharing options...
rEApZ Posted October 25, 2017 Author Report Share Posted October 25, 2017 hrmmm no continuity from PC6 to either R3 on second MIDIO or first MIDIO Quote Link to comment Share on other sites More sharing options...
rEApZ Posted November 26, 2017 Author Report Share Posted November 26, 2017 Still can't work this one out. Anyone have any ideas? Quote Link to comment Share on other sites More sharing options...
latigid on Posted November 27, 2017 Report Share Posted November 27, 2017 Did you fix the faulty connections? Could be: DISCO board not seated correctly Core header not soldered correctly Misaligned ribbon cable or improper connection MIDIO header not soldered correctly R3 not soldered correctly Short anywhere along the path to 0V (ground) Less likely is the pin on the DISCO board is fried or shorted somehow. You can try manually routing the signal with a wire or DuPont cable. Quote Link to comment Share on other sites More sharing options...
rEApZ Posted December 27, 2017 Author Report Share Posted December 27, 2017 Hey latigid on, Thanks for all the help! Finally sorted it out. It was a bad solder on a pin connecting the disco board! Cheers, steve Quote Link to comment Share on other sites More sharing options...
latigid on Posted December 27, 2017 Report Share Posted December 27, 2017 Thanks for reporting back, I'm glad you got it sorted. Quote Link to comment Share on other sites More sharing options...
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