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monokinetic

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Posts posted by monokinetic

  1. MIDIbox CV V2 Concept

    in MIDIfication

    Posted

    FWIW I use MBCV2 regularly on an STM32F4 core and an AOUT using MAX525s, and I have some DOUTs doing gates. It works great in my DIY modular synth.

    Everything you described in your post sounds like it is doable in my experience. Whether you even need the second core running NG is debatable, that'll depend on how you want to connect to the Behinger (which I'm not familiar with, so can't comment).

    I wouldn't say it's a dead project myself, super usable and the interfacing with Lemur is amazing.

    Good luck with your project!

     

  5. [FS] Some MB bits

    in Fleamarket

    Posted

    Adding some photos. As you can see, PCB is still in airtight shrink wrap, all kit components in sealed bags (packed by smashtv himself!!), Heindrich case sealed in plastic, LCD windows in nice tissue paper and unscratched! So everything is basically as new and ready to build, just add LCDs and your CORE and MIDI PCBs and you have a complete unit :)




    IMG_4589.JPG

    IMG_4596.JPG

    IMG_4595.JPG

  6. [FS] Some MB bits

    in Fleamarket

    Posted · Edited by monokinetic
    Sold!

    Still available:

    OPL3 and 2x DAC chip set 15 euro
    MBCV 1 from sonicwarrior 10 euro

    PIC Burner + cable - 15 euro

    I'm located in Prague, the Czech Republic. Prefer bank transfer, but can do Paypal if you pay fees. IM me if you're interested in anything.

  8. pyBLM - Headless Python-based Novation Launchpad BLM implementation [BETA]

    in MIDIbox BLM

    Posted · Edited by monokinetic
    suggested use of extra row

    Wow excellent news, thanks for taking the time to do this and contribute it. I was contemplating whether to go the Launchpad route or not and this encourages me to go shopping soon :)

    I was wondering if it would be possible to use the extra row of buttons to send some MIDI messages, and if so I would suggest something like Program Change messages, which could then be used to control the phrase/song, assuming the MBSeq is configured to respond to them in the Ext. Ctrl page. This is the one thing I find myself missing from using the Lemur BLM extensively. Just a suggestion.... 

    Cheers!

  9. CV setup help

    in MIDIbox SEQ

    Posted

    I know you mentioned the testaoutpin to check connections, but have you tried caliaout? That might be worth a try when the Seq app is running, you can measure the exact voltages on each output. Otherwise could you provide details on the type of track etc that you are configuring in MBSeq to try and test your AOUT_NG? Is it a note track, what is the output set to, and so on.

    Good luck

  10. MIDI_CORE_LPC17 PCB?

    in Parts Questions

    Posted

    On 9/14/2016 at 9:30 PM, Antichambre said:

    the good révision is B if I remember well, C doesn't match.

    Interesting, I didn't know that. I have one more LPC core that I plan to stuff. Does anyone happen to know if LPC1769 revision D, currently available on the embeddedartists site, is compatible with LPC core? They claim that:

    "the expansion pins (2x27 positions) are mechanically compatible with the original design"

    but I'd like to check if anyone here has experience with it before I order. 

  11. Patterns Workflow

    in MIDIbox SEQ

    Posted · Edited by monokinetic
    Spelling

    Personally I find the pattern mode really useful, especially when coupled with "save and take over patterns". If you haven't tried it, it enables you to assign changes in your song to the 16 GP buttons. For each of the 16 slots, MBSeq stores mutes, can send program changes and mixer maps and then trigger 4 pattern groups (i.e. choose 16 tracks). You have 16 slots like that (i.e. 16 changes) per song. I used it for a live set earlier this year and it was great, sending program changes to all of the midi kit we controlled was pretty much instantaneous and with 3 MBSeq songs set up like this we jammed for an hour.

    I'm not sure if that would match your snapshot concept, but I'd give it a try. It enables you to decide the structure of the song pretty live IMO :)

    • Like 1

  13. MBSEQv4 Beginner's user manual (draft)

    in MIDIbox Documentation Project

    Posted

    Interesting discussion, and I agree with most of the points. But in regards to this:

    11 hours ago, TK. said:
    Quote
    • is there a button & LED for the Jam page Rec on/off? If not, could there be?

    There is currently an open request for providing a dedicated Rec button for Step and Live recording mode.

    A possible enhancement of this button function would be, that the first push just changes to the Jam page, and an additional push (resp. whenever we are already in the Jam page) will enable/disable the recording function.
    Does this make sense?

    Personally I think the advantage of a dedicated record button is to be able to quickly toggle between recording state and playing state. So you could hit record to quickly drop into record mode for the last 16 steps of a 64 step pattern and add some notes, then hit record again to avoid recording over existing notes as the pattern loops. Instead of your suggestion, I'd make the shortcut to the Jam page a key-combo with the Record button and another button, for example press Menu and Record or something similar to quickly jump to the Jam page. Otherwise it is still minimum 2 key presses to get to into recording (currently 3) which I find slows down my workflow.

    Just a suggestion!

  15. Midi to CV/GATE

    in MIDIfication

    Posted

     

    • 16 CV Outputs (+5...+15V) for Velocity.

    Are you sure your 808 clone accepts +5 to +15V CV for velocity? That is a weird CV range. Usually its 0 to 5 or 10V, or -5V to +5V in the modular synth world. FYI the last 808 circuits I played with (more than 5 years ago, so I may not remember correctly!) had an accent in, which changed volume to a louder sound. But that was just a different trigger in basically, not a continuous CV control. Which 808 clone are you using? Have you asked the people who made that clone how the CV in works?

    As standard an AOUT usually provides 0-10V range in the CV output. There is a balanced out expansion, which gives you -5V to + 5V. The AOUTNG includes the circuitry for balanced out already i.e. it can do 0-10V and -5v to +5v. Either way, you could use some opamps to change the range of CV to your +5V to +15V if necessary. If you think about it, it's just +5V offset from the AOUT's 0-10V.

    • 16 Gate Outputs (+5V) for Trigger.

    16 gates will require a DOUT2, it's 8 gate outs per chip. J5 on the CORE8 as mentioned only provides 8 gates. Both provide +5V gates and I've triggers lots of modular stuff with Midibox, no problem. Have you done a basic multimeter test to ensure that you actually get a +5V trigger from your Midibox when you send it the correct MIDI note?

    I did a lot of work on my Drum machine and i cant find a way to make it work as i need!!

    Plz Help me i am really desperate.

    What did you try already? How was a Midibox involved? How did it not work? That information would help people to understand the problem :)

  20. Revised 25-pin breakout port

    in MIDIbox SEQ

    Posted

    Do any EU Midiboxers have any known sources of 25 pin cables where the pins are connected 1-to-1? I've bought 2 cables now here in Czech and both of them only have 6/7 pins connected to do parallel printer connections. To get these line drivers working I need all 25 pins connected, and I'm lazy to DIY this, for once :)

  24. MB CV2 AOUT Gates

    in Testing/Troubleshooting

    Posted

    TK, partly as a ping to ask if you have any ideas about the above, but also I would like to ask if there is any kind of SRIO interconnection test for MIOS32?

    I tried a DOUT over the weekend with my STM32F4 board to get around the above gates issue and I can not get any DOUT pins to trigger using MBCV2.... not sure if it's my hardware and not sure how to test further!

  25. MB CV2 AOUT Gates

    in Testing/Troubleshooting

    Posted

    Hi all,

    I've been using MB CV 2 over the summer and it really is great! I have it running on an STM32F4 CORE and one of the original design AOUTs. Currently I would like to use the 2 gates from the AOUT board to trigger different things in my modular, and I can generate a gate no problem by sending a MIDI note on channel 1. The problem is that I want to use the separate gates on 2 different MIDI channels and I can't get it to work.

    Using the Lemur interface, I set the 1st CV channel to receive on MIDI Channel 1 and the 2nd CV channel to receive on MIDI channel 2. Then I send MIDI notes on both of these channels from my DAW, but both gates only work when I'm sending notes on MIDI channel 1.

     

    Should this work? Also in relation to this, I think a good addition to the interface would be a way to assign a couple of gates / DOUTs per CV channel from the user interface. This could be added to the Default page for example.

     

    Cheers

     

    David

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