alchemist Posted December 23, 2013 Report Share Posted December 23, 2013 (edited) Hello, My SID box is almost working (MIDI I/O, voltages & ground measures on MBHP_CORE and MBHP_SID PCBs), but I have no display (just a black line) and no sound. I tested the LCD with a 40x2 and a 16x2, both results. Both are normally compatible with the default Hitachi Driver (the 16x2 comes from my Arduino kit and working, the 40x2 is from voti.nl). So I have 2 blocks of questions 1. LCD For the SID applications, I should only use 4 bit data (4-7). The SID manual don't seem to tell to use a 1k pull-up resistance on D3. Do I need to do it? Will the LCD display "READY" only when all is OK? or do I have to check something? To use the test application, do I need to do it with or without the LCD connected? 2. SID Do I need to remove the 6581 for the SID connection test application? Thank you for the support! Edited December 27, 2013 by alchemist Quote Link to comment Share on other sites More sharing options...
TK. Posted December 23, 2013 Report Share Posted December 23, 2013 Hi, For the SID applications, I should only use 4 bit data (4-7). The SID manual don't seem to tell to use a 1k pull-up resistance on D3. Do I need to do it? yes! See also http://www.ucapps.de/midibox_sid/mbsid_v2_communication.pdf Will the LCD display "READY" only when all is OK? or do I have to check something? It will display a boot screen, thereafter the MBSID main screen when the connections are ok To use the test application, do I need to do it with or without the LCD connected? this doesn't matter Do I need to remove the 6581 for the SID connection test application? no Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
alchemist Posted December 23, 2013 Author Report Share Posted December 23, 2013 OK. The 1N4148's are only for multiple CORE communications ? Quote Link to comment Share on other sites More sharing options...
TK. Posted December 24, 2013 Report Share Posted December 24, 2013 I'm not 100% sure if the missing diode could cause a problem, but since I'm currently not able to try it without a diode at my side, please mount it. General question: did you follow the walkthrough? -> http://www.ucapps.de/midibox_sid_walkthrough.html E.g. it's important that you install MIOS (the operating system) before the MIDIbox SID application, otherwise the app won't start, and also the LCD won't be initialized (so: actually the same effect that you described) Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
alchemist Posted December 24, 2013 Author Report Share Posted December 24, 2013 Hello, Thank you for your reply. I did read the walkthrough manual, but I thought the SID aplication archive was the OS + the application. I will also plug the diode, but I have now a MIDI IN problem : the upload fails, the MIDI Out sends good Sysexes, but when I do the loopback test (replace PIC by a jumper at RX/RX), the returning output is completely corrupted, and this was not so before. This was maybe due to my last checks, I did reintroduce "bugs" in the soldering... I was too enthusiastic, and did it late in the evening... not good. But I learn a lot, and my motivation is really high :) But I have to manage the time to play with soldering with family ;) Quote Link to comment Share on other sites More sharing options...
alchemist Posted December 27, 2013 Author Report Share Posted December 27, 2013 (edited) Hello, I fixed the MIDI IN problem (short-circuits around the J10 connector). Then I uploaded the OS and the SID application. Now the display shows the boot message and SID messages :smile: But I still have MIDI In noise, still around J10 and will fix that. This topic is "resolved" for me. Edited December 27, 2013 by alchemist Quote Link to comment Share on other sites More sharing options...
alchemist Posted January 3, 2014 Author Report Share Posted January 3, 2014 (edited) FYI: the soldering was such a mess (done with a too wide soldering tip) that I ordered an other CORE module. I've just built it this evening (with a fine soldering tip), and the MIDI I/O are now OK and really stable (I could upload the OS and applications many times). The voltages are OK on both boards (CORE and SID). I still have no sound, but I will check the interconnections and will connect the LCD display. Edited January 3, 2014 by alchemist Quote Link to comment Share on other sites More sharing options...
blash Posted July 30, 2014 Report Share Posted July 30, 2014 alchemist: is your board working now? i got the exactly same problem. i built both, the core and the sid, the core is talking to mios_studio, i can ul mios and the application "setup.6581.hex" and there is no sound... Quote Link to comment Share on other sites More sharing options...
alchemist Posted July 31, 2014 Author Report Share Posted July 31, 2014 Hello, The board was not working, I replaced it : I used a too big solder point and I broke too many tracks. Now, I have 4 cores working very well :smile: Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.