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latigid on

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Posts posted by latigid on

  2. Aout_ng last CV value - reset to 0V

    in MIDIbox SEQ

    Posted

    I think the CV staying at the last level is the expected behaviour. Also "off" would mean about -5V in a bipolar mode...

    If using a modular, then just pull out the patch cable :). Or solder a switch inline with the cable to shut it off when it's not required. Most modules I know will attenuate (full anticlockwise is 0) or attenuvert (middle is zero), so these are options too.

     

  6. Old music

    in Songs & Sounds

    Posted

    Thanks! The sound at the start is the Rhodes Chroma as are the later pads. I can't remember if it was going through any effects, but it's probably the raw synth. The bass is Moog Voyager.

    I have another one that sounds a bit like a didge, but it's just a Sherman Filterbank 2. :happy: It's pretty rough though, so I'll save your ears :).

     

     

  7. MIDIbox SEQ V4 Release + Feedback

    in MIDIbox SEQ

    Posted

    1 hour ago, lacuna said:

    My BiGGeST WiSh iS

    Notch

    - This means individual track delay, - positive and negative.
     

     

    Have you tried this:

    Quote

    V4.089

    • Groove page: by default, groove configuration changes are applied on all tracks now. It's possible to select a "local groove" by pressing GP7 button in the groove page.
    • BPM page: it's now possible to configure an output delay for each MIDI port. (positive and negative delays are supported - this is currently an experimental feature!)

     

  12. Time for my next MB

    in MIDIbox SEQ

    Posted · Edited by latigid on

    @Smithy, if you're thinking of a SEQ V4+ build, I'd hold off. Often the cheaper OLEDs are about 5mm taller, and I think we need that for the V4+. For colours, the best approach is to use a white one and put a plastic sheet (gel) in front of it.

    • Like 1

  19. Waveshare Core

    in Design Concepts

    Posted

    Bruno, looks nice! Your offer is kind, but I think it will be okay with what I have. In my experience, builders have quite some trouble even with SOIC parts, so I try to go no smaller than SOIC/1206/SOT-23. And of course THT parts when possible as they make nice jumpers!

    I think the Waveshare paradigm is a good one to follow as they do a lot of STM chips:

    http://www.waveshare.com/product/mcu-tools/stm32/core/core429i.htm
    F4 I (with much more IO) and 1MB SD RAM onboard

    http://www.waveshare.com/product/mcu-tools/stm32/core/core746i.htm
    F7 Core

    etc.

     

    Yannick, I need some weeks at least to talk with the Bavarians. I also have to prioritise giving boards out to those interested in the SEQ. But hopefully more becomes clear soon.

     

    Best,
    Andy

     

  20. Waveshare Core

    in Design Concepts

    Posted

    Hello, total height seems to be about 30-35mm:

    20170807_193031.thumb.jpg.35e7237fc06a97

     

    20170807_192606.thumb.jpg.e36f21341b58df

     

     

    So even a bit higher than the Disco version with the bottom headers; about the same without. There's not much reason to keep the panel board close to the Core, although I will do it like that for the SEQ and everything aligns nicely. I suppose the signal integrity (USB, SD) is better with shorter cables.

    The panel connectors are themselves quite high. Honestly, I think the only way to do it shorter height-wise would be with a dedicated STM32F4 chip on a custom PCB. With a breakout it's fairly much plug-and-play, and probably cheaper.

    https://eckstein-shop.de/Core407V

     

  21. Waveshare Core

    in Design Concepts

    Posted

    Here's a new STM32F4 Core:

     

    20170806_200120.thumb.jpg.403a05e01066f8

    20170806_200016.jpg.fed4bc3e6f506002ddf6

     

    It has most of the functionality of the Discovery one, but has a few improvements:

    • USB ports are on the breakout, so there's proper USB B
    • USB A "host" - still need to test this, but it's normally done setting the ID pin low. I've put a panel switch for selecting host/slave and there's a jumper to power the slaved device if needed.
    • LEDs and reset button on the panel; "blue button" as a jumper
    • a 3.5mm socket for a footswitch or gate (or for other purposes)
    • some connectors for +5V supply direct off the USB bus
    • 3v3 Vreg is rated at 1000mA I think
    • the panel connectors could be distant from the Core 
    • I haven't tested the AINs, but it is possible to use an external reference. 

     

    At the moment I have the breakout mounted on female headers; I suppose they could be directly soldered if extra height is needed. The JTAG and other pin headers do take up a bit of vertical height. These could be cut off if needed; the breakout pins are still there on the headers. There is a realtime clock oscillator (and caps) that I removed as they overlapped with a port.

    A downside compared to Discovery is that there isn't any ST-Link. This is easily overcome with a cheap ST-link clone, or even an old Discovery board could be used. :happy:

     

    At least all of the functions for a SEQ are working well. I realise that some of the cabling etc. is a bit wonky for the moment.

     

    Best,
    Andy

     

     

    • Like 3

  24. BLM feature requests

    in MIDIbox BLM

    Posted

    Just had a nice jam using the BLM. 

    How are we going with shifting views on on the y axis? It's okay to view just 16 notes, but I find it restricts the usage, especially when using a "polyphonic" track. 

    Perhaps an additional idea: currently the encoder moves just one note up or down when a polyphonic track is enabled. Could the step encoder instead shift the whole shape by semitones? 

    (This may be the Weizen talking.)

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