latigid on

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About latigid on

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  1. Troubleshooting midiphy SEQ v4+

    Nice to hear you got it resolved!  The (tented) via that you mention is the SO signal, so that ties in perfectly with your observations. The likely short was to 0V, so the 595 registers never received any bits to shift in. Best, Andy
  2. blm 16x16+x Costs - Calculation

    I'm also looking forward to the new design :)
  3. Troubleshooting midiphy SEQ v4+

    That's the correct orientation for RNs. I think the set dout command should still work after an .NGC is loaded. If you can't set the DOUT pins, then the sink side (cathodes) of your matrix don't work. As the behaviour is common to both boards, my guess is that there is an issue on the Core or one of the connecting cables. Check IC1B pins 4/5/6 (4=0V, 5=buffer output, 6=buffer input for SO) and back to PB15 on the MCU. It could be a soldering issue with the J8/9 header, the IC or that the header pins don't make sufficient contact to the female connector or similar. Check IC1B, pins 11/12/13 (RC1) and back to PB12 on the MCU, though the shift in should still occur on the RC2 pulse, which from your working encoders suggests that part of the SRIO chain is functional.  
  4. Sure you can buy protoboard without copper or just drop a normal piece in the etching solution or even file off the metal. It's also no issue to widen some of the holes.
  5. Troubleshooting midiphy SEQ v4+

    How are your 10-pin resistor networks oriented? The 74HC165 inputs of IC3 should be at about +5V You haven't soldered the switches in, so are you confident that you are properly closing the switch pads? Maybe try to bridge them with metal tweezers or similar. Make sure set debug on is active. You should be able to control the 74HC595 pins (or resistors R1-8 from the MIOS terminal with set dout x 0|1. Each 595 has 8 outputs so IC2 is 24-31 for _R and 0-7 for _L. During normal running of the (correct) .NGC you should measure some voltage on the pins of IC2, which controls the sink driver transistors.  
  6. How about veroboard/perfboard? Needs fairly standard spacing to work though.
  7. Troubleshooting midiphy SEQ v4+

    Photos of the rear of the PCBs would be good. Did you measure any input with set debug on?  Try connecting only JA and test with seq_l. Try connecting only lemec_l and test with seq_r. 
  8. midiphy Eurorack Expander Modules

    What is the jumper setting with J5? Choose USB to power it this way. (check the +5V rail is not shorted to 0V)
  9. MIDIbox SEQ V4 Release + Feedback

    Thanks for the clarification on the CV channels. I could see a usecase for four modules if the velocity function was added, which I didn't remember BTW! This could add some expression, e.g. as a mod source mixed into a VCA -- great! And the accent trigger on the spare gates is awesome. For the drum triggers, I figured it was a code issue, as the clocks are easy to calculate in advance. In the meantime I think Andrew implemented a pulse stretcher in hardware, but if it is not too much effort I'm sure more software flexibility would be welcomed. Besides, we have the option of the standard trigger length, which I guess is one "step" long? Best, Andy  
  10. MIDIbox SEQ V4 Release + Feedback

    I find the proposal too cryptic. It would IMO be more intuitive to display more information on the FX page/menu.
  11. midiphy Eurorack Expander Modules

    Awesome, have fun with the CV! A small case is a sensible idea as it can keep the modular addiction contained :) Thank you for the framework and codebase to enable development of these modules. Best, Andy
  12. midiphy SEQ v4+

    #21 ! and Holy Modular Batman! That's all DIY too !!?? Awesome!
  13. midiphy Eurorack Expander Modules

    Hello, Peter made an awesome video (4k quality!) demonstrating the assembly of the following modules Euroceiver (line driver receiver in the rack), power distribution A1 Expander (AOUT based on MAX5500) D1 Expander (DOUTX1 for gates plus protection) D2/D3 Expanders (likewise for clocks and triggers) Feel free to use this thread for any discussion or troubleshooting. Have fun building your modules!     
  14. seqv4 problem

    Note that the Wilba board is wired in a way that the switch bodies carry some signals too. Think of the switch with two halves.  A A' B B' When the switch is not pressed, A still connects to A' and B to B'. Think of it like a clipped resistor leg soldered between the two PCB pads. The idea/function is to act as a "bridge" to avoid lots of vias or a 4-layer board, as you can effectively jumper the signals over and under each other. When you press the switch, then the switch acts as you think it should and connects parts A + B. Naturally all contacts are connected when the switch is depressed.   I would be tempted to load MB_NG and manually check the functions. E.g. you can read DIN events with set debug on (short the "cathode" part of the switch to 0V/ground) and simulate a matrix with set dout x y and try to gauge if the switch works that way.
  15. Troubleshooting midiphy SEQ v4+

    Hello, I can't offer much help because I can't quite understand the things I've highlighted in bold. If you can clarify those points I'll do my best. At a guess, the problem might lie with IC4 as it processes channels 7+8.