latigid on

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Everything posted by latigid on

  1. Troubleshooting midiphy SEQ v4+

    Can you post a picture of the soldering? The most likely place is on either of the two USB connectors. This is the bottom of the board with the +5V and 0V connections highlighted.
  2. MB6582 PIC troubleshooting

    RME Fireface should work. You can also change IDs through MIDI:   Select the ID in MIOS Studio as follows:    
  3. Adding Faders to MBSeqv4

    I'm not sure if CC is implemented for note steps. The encoders are also responsible for the UI in general. It would also be a lot of data to poll/update.  But yes, _NG with AINSER would be the right direction. You can also get high-speed UART by removing the optocouplers. The connection is more fragile of course.
  4. MB6582 PIC troubleshooting

    Sometimes you forget to socket the optocouplers, or they are faulty somehow.  Could be an incompatible MIDI interface (is it on the blacklist?). Are you aware of the different device IDs for the PICs? They need to be configured in MIOS Studio.
  5. midiphy SEQ v4+

    Maybe we should have a new thread for module things? Regarding depth, note that it would be doable to squeeze things tighter with shorter headers or even direct soldering. Right-angled IDC headers would also help. For panel files, at least at the beginning I prefer to keep them closed. We might offer different colours in the future (e.g. black panels). But if you really would like to do your own, just put a note in when you order and I can give you the dimensions. It wouldn't be difficult to measure either :).  
  6. One MB-6582, One Power Supply: a Tutorial

    I noticed the same thing: the switch action removed the 0V rather than +V. It can be confusing when the MB-6582 "receives" 0V from somewhere else. From memory, it would not be so significant if the bridge rectifier was still there.   
  7. midiphy SEQ v4+

    If the MAX525 chips are SSOP, then you could substitute them. If they're DIP, then it won't work. I use an LED driver to indicate CV activity. You would probably exceed the current limits of an op amp plus run into loading issues just placing them in parallel.  
  8. midiphy SEQ v4+

    @lukas412 looking great! We are indebted to Adrian for his awesome work on the case @knochenfabrik I figured, but thanks for the clarification. When the rack ears are ready it should work to mount directly that way, but nicely done with the hack/workaround!
  9. midiphy SEQ v4+

    Indeed! The line drivers would actually "buffer" the SRIO a bit, but as long as the cables are short it should still be okay. The other option of using line drivers (if required) is to omit the DB-25 connector and use the IDC instead. The ribbons would take less room.
  10. midiphy SEQ v4+

    Well that's an awesome photo! Presumably you had to remove the rails/threaded inserts? But sure, everything should fit in 3U. There's been promise of ears for 19" rack mounting for a while but those are still on the way. Not long until the modules are ready. But summer holidays can result in a slowdown sometimes. Btw. with everything in the case like this, probably you wouldn't need to use the line drivers at all. Just connect J8/9 and J19 to the respective digital and analogue expanders.
  11. Please post here if you find a Mouser part is out of stock or has a long lead time. Please provide: Mouser part number or URL Board or kit where it is required (Optional) replacement part suggestion Note that end-of-life parts might remain in the tool until the supply dwindles.
  12. Out-of-stock parts for midiphy BOM tool

    Or TME?
  13. Out-of-stock parts for midiphy BOM tool

    I would recommend Reichelt but check the shipping price to France. Otherwise, just order (I think) 60€ worth of parts and the shipping will be covered from Mouser.
  14. Troubleshooting midiphy SEQ v4+

    Nice!
  15. 19" Rack MBFM with extended frontpanel

    There's a ready-made driver for MIOS32.
  16. 19" Rack MBFM with extended frontpanel

    You could always get a panel laser cut, that way the corner radius could be 0.15mm or less. That's fairly much square. If you push the LEDs through, the corners might also be "shaved" off in the process, no issue! We stock a quality white OLED. Simplest would be to use  this with a red acrylic "gel" or even have the whole window milled from transparent red acrylic. Are you using MIOS8 or MIOS32? The OLED driver works for MIOS32 but I don't know about MIOS8.      
  17. Troubleshooting midiphy SEQ v4+

    Well done! I think yours is the first green-blue one, will be nice to see it! Best, Andy P.S. cheers!
  18. Troubleshooting midiphy SEQ v4+

    I recommend to use a soldering iron to keep the heat away from the semiconductor dies/wire bonds. If you use hot air, perhaps bake the LEDs at 80°C overnight to lessen the chance of failures (steam microbubbles might cause issues). Note that I haven't tried baking the LEDs, so YMMV.
  19. Troubleshooting midiphy SEQ v4+

    Makes sense!  SJ pins correspond to the numbers on superflux LEDs: 1=red 2=green 3=blue. As you're not using the red superflux LED, you should instead jumper SJs to pin 2. This connects the MEC LED to the A pin on the RJ, so the hardware configuration should stay the same.  (this assumes that SJs A connect to 2 and B to 3)
  20. Troubleshooting midiphy SEQ v4+

    Pin 1 is correct for SJs. Unless you're using a different RJ config, such as green and blue LEDs? Picture would help to clarify.  Then are you sure about LED orientation? Check with diode mode of your multimeter. Red lead to circle, black lead to line on the MEC switch silkscreen should illuminate.  Some have had problems over-stretching LED legs causing them to break. It would be odd for all LEDs to break  though.   
  21. Troubleshooting midiphy SEQ v4+

    Missing/misconfigured SJs perhaps? Photo of the board?
  22. Troubleshooting midiphy SEQ v4+

    I can't offer an explanation that would have a problem isolated to SW18. If there was an issue with 165 ICs, then the whole column wouldn't work. If there was an issue with transistors on the sink side, then the whole row of four wouldn't work. My immediate guess would be that the diode is soldered the wrong way around or with cold joints. Could also be a faulty diode, but it's very unlikely. This is viewed from the top of the board. I've numbered the pins of SW18. Pin 1 (+2) is the cathode pin (also used for the LED). The connection should be common to the other switches SW17/19/20. If the marked bridge on SW19 is not present (i.e. no switch or bridge wire), then none of those four switches will work. Pin 3 is the DIN input. It should connect to the diode adjacent. The diode anode (i.e. non-striped end) should be common to other diode anodes in the column (i.e. on SW2/10).  
  23. Troubleshooting midiphy SEQ v4+

    Hello, just on the road at the moment, but you might try to check the connection made with a MEC switch. It is marked on the silkscreen as 'sink bridged by switch' or similar. The problem would be the same for all SW17-20. Test for continuity over that line and insert a bridge wire or solder the switch in if needed.  Are any other switches not functioning? 
  24. Troubleshooting midiphy SEQ v4+

     happy it was a simple fix! No worries!
  25. Troubleshooting midiphy SEQ v4+

    Hmm, I think that's the wrong part. The bussed network has a "2" prefix. Cross-check the part here: You should have only one piece of 652-4816P-T2LF-10K and two of 652-4816P-1LF-10K .   Best, Andy