Zam

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Everything posted by Zam

  1. MCAN

    Hi all   I played last month with mios32 MCAN implementation from @Antichambre I basically make it work with MB_NG at .ngc but not at .ngr (yes I'm not good at this...) Any -official- agenda planed to add those ports natively for MB_NG ? I'm very pleased with the first test I performed   Best Zam
  2. JU60

    Salut Bruno ! Yes you'r right, that also my conclusion since I post this But I personally don't like the idea to swap the MCU I will probably go for the CHD solution http://www.chd-el.cz/index.php?id=468&lngid=en Hooked at a midibox core (via J11) to have USB midi and 16 ch Ain/Aout (J19) to read/write analog pot and automate all parameters If only I have time and code skill, I'll design a full midibox HW and SW solution for Juno60 retrofit... Best Zam  
  3. JU60

    Hi all My next midibox project concern my juno60 There is two topic, all the CV handling for all slider parameter, no test yet, but I have a clear view about what I'll do about it. Then the keyboard, note on/off to remote play the JU60 via midi note... I try interfacing a matrix "reader" with 1 DIN scanning the JUNO CPU output (to KB), and a "return" with 1 DOUT to the JUNO CPU, with "result" but not usable. The idea is to active a DOUT pin at the proper instant compared to DIN scan (which row is scanned) so the JU60 CPU know which note is virtually pressed... I guess my issue here is the time sensitivities (as maybe component and clock between two system) The question is simple, what is the fastest possible loopback latency with mios (MB_NG in my case) to trig a DOUT pin according to a DIN status ? For what I see so far in my Oscope, the JUNO seem to scan the KB (and other buttons...) within 1ms so I guess I should send a DOUT trig in less than 100us (and for less than 100us) after the DIN "read" a row. I think a lot about the method and end up with this idea, a matrix reading a matrix, but I don't know if my approach is the good one... Input welcome Best Zam   ps: I also think about DCB emulator with midibox, but I'm not good enough to code this...  
  4. MIDI Implemtation for EUCON

    Hello EUCON is proprietary and AVID (who buy it from Euphonix) don't let anyone manufacturing compatible HW controller. Even industry big name that offer digitally controlled desk with at least five 0 on the bill can't implement eucon... IIRC the only access is for soft dev that want to implement the protocol for they app, DAW or plugins (to be controlled by HW) I suppose you need a confirmed company to have access to SDK, and sign restrictive NDA. So my suggestion is... forget it Best Zam    
  5. daisy chain USB Midibox control surfaces

    Hello I'm here I use direct midi uart coupling between core at 10x speed, not optocoupler. For this you need: Same PSU for all core (my 3 core are in a 3U rack) Short wire between core J11 connectors Routing configuration at "master" core where midi i/o (to/from slave) go to USB midi 2 to 4   My protocol emulation is MCU   Now for your specific configuration, If cubase only allow 1 HUI device to be configured, I suspect all your controllers will be mirrored, whatever chaining/connection between controllers you use... Are you sure you can't use MCU protocol which usually allow 4 units (1master+3 extanders) to be configured in most DAW   Best Zam   ps @Antichambre any news about MCAN ?
  6. Upcoming MBHP_MF_NG module

    Hello   "Stall current" is the current consumption  when the motor is "lock", meaning want to move but can't, like mechanical stop end when you still ask him to move further. In short this is the max current the motor can ask. To move (without constraints) the motor should ask less that that... Your issue is somewhere else Best Zam
  7. Hello We can't call a resistor a decoupling device but you use " so it's ok. In this case I think it's a small voltage drop to ensure Vref stay below VDD, to avoid error at full scale, as I nether won't call 10ohm resistor a current limiting for Vref input with half an amp at 5V... If you use separate regulation you don't need this resistor. Best Zam
  8. Hi Tago I won't call someone who ask questions, trying to learn, as experimenting things an idiot ! Best Zam
  9. Hello Vref is your ref analog voltage, you need to provide the pot with the same voltage. Vref is the 100% value for analog inputs whatever voltage you feed.   Please check again the AINSER64, Vref connect to ADC as J6 to 13 for pots (and 4051 multiplexed analog switches)   Best Zam
  10. I'll say try both... it's cheap ! Best Zam
  11. Assign J5a/b core ports in .NGC

    You can mix IN/OUT at J10, but have to choose for a full row, a and b So if you want to keep spare for future SCS (at J10a) it's not an option... I'm sure someone can help you better than me for software side and J5 implementation Best Zam    
  12. Assign J5a/b core ports in .NGC

    Hey I can't help for J5 handle at lower level. Side question, did you already use J10 ? Best Zam
  13. Assign J5a/b core ports in .NGC

    Hello Tago Yes J5 ports are available at .NGC, as analogue input, EVENT_AIN with "ain_mode=switch" flag you can hook a button on it You have to enable the input pins with: Example: # AIN hardware AIN enable_mask=110000 will enable the J5A.A0 and J5A.A1 inputs. To connect LED I suppose you have to go deeper in mios32. If you use toggle switch (and not tact switch) you can solve this with a dual pole version, one for the AIN and one for a LED directly powered by the switch. Best Zam
  14. The whole datasheet define it more or less like a zener, so I suppose there is no voltage drop, but a "voltage limiter" behaviour. Just my guess, but you better try a 4.1 version (4.096V) because if your 5VDD go down below 5V for any reason, your "precision zener" at 5.000V will follow. With the 4.1V version you have 20% margin before issue at analoge Vref. Best Zam  
  15. I mean 1mV per bit or 1.25mV per bit (according to different Vref, 4 or 5V) won't change that much if you have a regulator that clean the supply below or around mV noise/ripple, you'll still have jitter at 12bit but clean at 11bit or lower, which is way better than jittery 7bit for the OP ! Best Zam
  16. Hello Use the digital 5V close to the MCP3208 (coming from J19) and don't forget to use the same Vref for your pots or faders, be careful about load as this regulators don't offer that much mA at output (don't drive anything but ADC and pots)   Have a look at MCP3208 datasheet page 19 for design notes and coupling with the precision regulator Best Zam
  17. Hello Dedicated regulator for AINSER8 Vref help a lot... Unfortunately it will be difficult to regulate 5V from a 5V USB power (usual voltage drop at regulator) With the proper design it's possible to run the AINSER8 at 11bit without jitter and 12bit low jitter. As already mentioned, 0V path is also a key to achieve this result. Best Zam
  18. Hello Thanks TK for this update !!! I'll wait to have access to my Sierra computer as it don't work any more in my 10.6 computer. So 64bit only I guess Best Zam
  19. Just like "snapshot at power on"

    Hello Guess you don't set the fast boot on at bootloader ? Anyway you solved the issue which is a timing issue... good Best Zam
  20. Just like "snapshot at power on"

    Hello Seems ok but exit command ? So none of your CC get out at start-up? is the debug message say something like some invalid at ngr? To what device are you sending that ? Can you try to route these CC to USB port and monitor incoming data at your computer (eg: midi monitor for OSX) Best Zam
  21. Just like "snapshot at power on"

    Hello Roman Can you copy/past your whole section 0 ? Also maybe update to latest NG (1.037 ?) IIRC there is ngr handling change since 1.031. Best Zam
  22. Bi-Polar Question

    as I say, it's a OSC modulator, not a note CV, you have to think it as a "pitchbend" maybe that's why you encounter strange behaviour, if KB trig and/or sample & hold circuit keep some voltage at IC9/Q2 output, then your ext CV at R13 is just adding/subtracting to sum amp what's coming from R48... I suspect you should "reset" KB trig in the mean time you gate from external if you want to use J1-4 to "play" a note Best Zam
  23. Bi-Polar Question

    Side note: this entry point CV at summing amp is a OSC modulator, you won't trig note here ! nor modulating the filter via key
  24. Bi-Polar Question

    Find the connector end, redundant to the external filter jack !!! For the math, I see that we have a 1 octave sw that send 9V to sum amp via 450K (442+20K trim, I suspect 450K nominal calibration setting) I deduce that 1 octave is 20uA for the summing amp... after that it's all ohm law again... Best Zam