latigid on

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About latigid on

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    MIDIbox Guru

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  1. Sammich UK PSU

    If the PSU is heavy, then it has a wound transformer in it, so it is a linear PSU. If it is light, then it is switching as the components are much smaller (also sometimes containing a small transformer). Very few of linear ones are also regulated, but they do exist. You should measure something near the rated voltage with a multimeter. Better to load it with a 1k THT resistor. If the voltage is wildly different then it is not regulated. The current capacity of a switching PSU is much higher than for a linear PSU of the same size. Anything over a few hundred mA will be a switching PSU.
  2. midiphy Eurorack Expander Modules

    Hi Niels, I am also confused, tried the other day with @Hawkeye to get an LFO going but I don't know how.  It would be interesting if you could get it working with a regular CC or MIDI note track then try to change the port to AOUT. Maybe a few notes are needed in the track? Sorry that I can't help! Best, Andy  
  3. Troubleshooting midiphy SEQ v4+

    Bruno is right; the 1MB flash confirms the correct VGT6 chip.
  4. understanding the .ngc code

    I have spare ones in white and can sell them for 4€ each. PM if you're interested.
  5. Troubleshooting midiphy SEQ v4+

    For removing the SD card during runtime, we've established that this can break things, so please restart if the card was removed. (would be nice to reload the HW config file upon remounting the SD). I'm not sure if the MIDI file export is related to any particular hardware. Sounds a bit like a memory overrun. What is the flash size of your STM chip when you query in MIOS Studio/is the chip VET6 or VGT6 on the Waveshare board? Please post the request (maybe also the previous bug report) in the following thread and hopefully TK. gets some time to look at it. Additionally, provide an example session that could be tested.    
  6. understanding the .ngc code

    Looks like an I2C interface. You want 4-wire SPI.
  7. midiphy SEQ v4+

    @lp1977 nice! #22  Enjoy your SEQ v4+!
  8. Troubleshooting midiphy SEQ v4+

    Hi Adam, Interesting, the MEC/Apem switches are typically quite solid! How are you determining intermittent behaviour? Could it be that the switches are fine but the LED legs are broken/intermittently contacting (compare DIN events in MIOS Studio versus LED emission)? Removing the switches is really a pain (as is inserting LEDs when the switch is already in). I don't think the LEDs are available at Mouser. Considering the issues you've had, I think we could send you a set of replacements. If that would be too slow for you, you could also find similar replacements on eBay but they will likely ship from Asia. Best, Andy  
  9. Open source documentation for MIDIphy stuff?

    Sorry for the confusion, really what is written in the above posts is all correct and there is not much more to add. But to clear it up: all MIDIbox platform software is open-source, free for personal use. Some circuits are too, but some are not and this has been the case for quite some time. It is even less common to publish layout files. The non-commercial part means in this context that you are not permitted to run MIDIbox software in assembled devices that you sell. Peter and I provide a valuable service, which takes a significant portion of our lives, in making great, professional-quality projects available. We have the full support of the MIDIbox creator, Thorsten Klose, to do this. I hope that your confusion is resolved and you can work on your design with the documentation at hand.  
  10. Open source documentation for MIDIphy stuff?

    What you see on uCapps is all you need to DIY a SEQ. A SEQ is just two displays and series of encoders, buttons and LEDs connected to DIN and DOUT modules. You address the buttons in the HW config file; this way you can have all buttons and LEDs in the arrangement you like. You then need some sort of Core (with SD card) and a MIDI IO board or just use USB. CV would need an AOUT module plus an additional DOUT module. Best of luck with your design.  
  11. Open source documentation for MIDIphy stuff?

    Alright then, have fun! 
  12. Open source documentation for MIDIphy stuff?

    Did you purchase anything through midiphy? Just email a reply to your purchase order and we can supply certain schematics (some are based on uCapps designs).
  13. What HW config file do you have on your SD card?
  14. Control LEDs without HC595

    Tried it! The LEDs flicker/pulse rather than dimming as the PWM/clock rates are not syncronised...
  15. Control LEDs without HC595

    Interesting solution! Do you use the tiny ICs or SOIC ones? Did you use a power supply resistor for each? The bonus with WS2811s is you can get better dimming effects than with SRIO scan (and dimming is practically unusable in a matrix).