niles

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About niles

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    MIDIbox Newbie
  1. Many thanks, Peter. I got a deal on 8580s from meeblip awhile back, I'm working through PSU option E.  Got an OLED screen.  I'm thinking of panel mounting the switches directly above the window so I can flush-mount the screen. Probably just build my own enclosure, it looks pretty cramped in the PT-10 and I like a little more room to work with. Based on your one post about how much of a pain the flat leds are I'm thinking of just going with regular round ones.   The PSU is tricky for me since  Jaytee's build guide leaves off necessary components from the original Wilba build guide, which makes sense since its original intention was a retrofit but a little confusing for scratch builds.  I think I can figure it out.
  2. midiphy SEQ v4+

    Lucky 13! Thanks, @Hawkeye!  
  3. Troubleshooting midiphy SEQ v4+

    All working now - Here's my beauty   Turns out I had a bad cable (my nemesis) for the MIDI8 board.  I went with the red/cyan color mix for the LEDs. Keycaps courtesy of @Antichambre . Also, I went with shorter 16mm keycaps for the switches ( mouser 642-1S11-16.0 ) instead of the 19mm from the BOM, I thought those were a bit too wiggly. I had a few self-inflicted hiccups along the way but I'm extremely pleased with how this turned out and the quality and support of the midiphy kit is top notch, of course. Cheers!  
  4. You wrote this kind of a long time ago @Hawkeye but can I ask why did everyone used JB-Weld in the first place vs just having screws from the top? People didn't want to see the screw heads on top of the panel?   Why not use the encoders to attach the front panel? Looks like there is room to lower the panel a few mm - was the height dictated by the original LCD height? Apart from the flat-top LEDs being a bit of a pain, anything anyone would do differently with their build? I've read all the big threads and really studied the wiki pages. Looks like an exciting project!
  5. Troubleshooting midiphy SEQ v4+

    Latigid on and Hawkeye - THANK YOU! It's up and running! (one caveat below...) Sorted out my JA board issues and it's firing a basic sequence now.  The OLED displays are amazingly crisp and clear.  This box is a thing of beauty, really quite a nice piece of engineering and design. I am looking forward to learning it. Thank you for offering it as a kit!   One caveat, though (there's always one in my world), is that I'm getting weird output from the 4 main Midi out ports. To test it I'm running a simple sequence with one note and one default gate length, and my synth gets the note (a behringer neutron) but only once ever, and it's like an infinite gate. Happens with all 4 of the Midi out ports. The IIC ports all work great when I change the midi output port on the fly while the same sequence is still running. The IIC ports appear to be operating normally so I'm thinking it's an issue with the midi8 board. Before I tear it apart and examine the midi8 pcb, I just wanted to confirm that there's no global setting or something that I need to enable or set for midi8 board? I'm guessing no but hey just double checking. If I do need to debug midi data, is there a recommended method or test sequence I should run against a known good port? Should I use mios studio or midi-ox or probably doesn't matter? Thanks again     
  6. Troubleshooting midiphy SEQ v4+

    Just reporting back in quick - it was the cable. I guess practice makes perfect, now the led matrix works perfectly. Getting there :)
  7. New entrant to the SID game

    @SimonSays Please keep us updated since I also ordered the PCBs from modular addict awhile back. I'm hopefully finishing up my seq v4+ build soon and will tackle a 6582 build soon after.  Got a small bonus at work and splurged on a slew of 8580 chips from meeblip a few months ago in preparation, also. I guess they are sold out now.   Have you turned up any ideas for the display? The hot thing is OLEDs now and some people get them to work it appears, though I haven't found a real guide.
  8. Troubleshooting midiphy SEQ v4+

    Thanks - I think it's the cable. I have continuity everywhere but from J5 pin 8-> cable-> j2 pin8.  Will replace that once I get new ends - I think I wore out the 24pin header.
  9. Troubleshooting midiphy SEQ v4+

    Hi - I had some more time today to make some really good progress. So far everything is going smooth except for the JA board. I have the case almost all the way together. for the JA, I'm going to debug the weird button behavior I had way back, now that I know how the ICs work a little more. Anyway do you know what would cause this row not to light in the matrix (please see photo below)? The 2nd row of 16 leds aren't lighting on the JA matrix. I've reflowed the matrix pins and the large 24pin connector, as well as the respective connectors on lemec_r.  I am guessing this matrix doesn't connect to anything else on the JA board that would cause just this row to not light?   Thanks
  10. Troubleshooting midiphy SEQ v4+

    Makes sense, I suppose it would want to go as fast as possible for quick registering. Is the RC = reset clock? Still not seeing any action on switches. I did for a little time right after I reflowed the ICs I mentioned but now nothing is showing up in MIOS.  I'll test all the pins again with the scope and report back and basically go back through your previous posts on this thread.  I still get perfect encoder twisting registering in MIOS studio, just no switches. 
  11. Troubleshooting midiphy SEQ v4+

    Initially I wasn't seeing anything on pin 14 on IC20, so I reflowed 17, 19, 20 pins and now I do see something. I do see normal (I think) behavior on IC2 now. I am curious what the CLK signal should be, though. You mentioned 1khz. I'm reading a little over 667khz on all clks, including the left le mec board. Thinking it was user error, I tried my function generator with a 10khz square wave the scope read it perfectly with no adjustments.  I am wondering if perhaps it's just getting clk'd too fast to really give reliable operations? What controls the frequency signal?
  12. Troubleshooting midiphy SEQ v4+

    I believe it is, what is the side of R26 connected to? I see the end closest to the pcb edge is to pin 8 of IC2. I thought I could test resistance between pin 8 and the mystery point just to be sure R26 is soldered on there correctly. Turns out there is no pulse train on Pin 14 on the R board. I see it clearly on the L board, it does help that one board works to compare! Do you think this IC2 is just a dud or perhaps damaged somehow? I get 0V on pin 13, also.
  13. Troubleshooting midiphy SEQ v4+

    With seq_r loaded,  on the Left board, on the scope I see a sequence on each of the output pins of IC2, although I can't seem to see any activity even if I press the switches. They just seem static although that could be my inexperience. I mean, the Left board switches still register in MIOS studio console so it's prob me :)  On the Right board however, each of the outputs of IC2 are reading high, no sequence. That would probably make sense that IC3 has all the high readings, then, right? If it depends on the outputs of IC2 being correct sequence? Both chips have clock in, it appears. Hopefully I'm still moving in a forward direction with this!
  14. Troubleshooting midiphy SEQ v4+

    Well for each button pressed it's the same each time. I get different groups of 4 registered in the debug screen on each encoder.  Now I can't get any of them to register, unfortunately, after a good cleaning.  Encoder twists still register great. COnfirmed I have seq_r.ngc loaded. I started comparing lemec L and R, and on IC1 on the L board, I don't see any voltage on pin 4 and 6, although I do on the R board. My L board is working fine (switches/encoders that is), should pin 4 and 6 read +5V as on the R board IC1?  IC1 is right next to the J89 connector on the Left board, so wasn't sure if maybe that is relevant to my problem.  I'll continue comparing the IC voltages via my scope but just curious which ones should be the same between L and R. All of them? Thank you
  15. Troubleshooting midiphy SEQ v4+

    pretty sure everything is correct, I can make another cable (third one...) and see if that makes a difference.  In the meantime here are photos.