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sylwester

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Posts posted by sylwester

  1. Just now, ilmenator said:

    So, did you change the Launch Pad Pro's firmware or did you modify the MIDIbox Seq V4 to get this to work??

    I have written a BLM-compatible firmware for the Launchpad Pro. No modifications on the Seq V4 side required :)

    4 hours ago, mongrol said:

    Cool. I presume this uses the Pro's open firmware API that was released? Did you reuse any MIOS BLM code or have to reimplement from scratch?

    (Now how to we scrape the labels off teh round buttons and light them up? :) )

    This uses the "SDK" from the first post, which contains a proprietary library for the Hardware Abstraction Layer. I re-implemented most of the things from scratch. For the first prototype I borrowed the SysEx state machine from MIOS.

  2. Hello,

    Some time ago Novation has partially* open-sourced their LaunchPad Pro Source Code. The Device contains a STM32F103,
    has 8x8 Pads with Aftertouch and Velocity Sensitivity, DIN MIDI IN/OUT, USB-MIDI and 32 General Purpose Buttons.

    I always loved the MidiBox Sequencer V4 and built my first just after it got released. I never built a BLM, though, but played
    around with the Emulated version, which I liked!

    Now my Idea: Implementing the BLM Firmware on the LaunchPad Pro and connect it via DIN-MIDI/USB-Host to the SEQv4
    as a Standalone device without the need for a PC as BLM-Launchpad-Proxy.

    My question is now, if I have to look into the source code of the PIC based BLM or if there is any protocol reference for the
    BLM protocol? I guess maybe looking at the Lemur BLM Code would make sense?

    https://github.com/dvhdr/launchpad-pro - Contains proprietary HAL

     

    UPDATE: Success! BLM-compatible firmware based on the Launchpad Pro template working. Still has some weird bugs,
    which look to me a bit like memory corruption or maybe OOM. Anyone wants to help? 

    • Like 1
  3. My Progress so far (and I'm stuck):

     

    declare -x MIOS32_BOARD="STM32F3DISCOVERY"
    declare -x MIOS32_FAMILY="STM32F30x"
    declare -x MIOS32_GCC_PREFIX="arm-none-eabi"
    declare -x MIOS32_LCD="universal"
    declare -x MIOS32_PATH="/home/wrk/src/mios32/trunk"
    declare -x MIOS32_PROCESSOR="STM32F303"
     
    and my patches:
     
    @Tk: Maybe you could take a quick look? Initialization code, peripheral drivers etc. are included.
     
    Cheers
  4. I've checked the routing and networking is really not the problem in this case. ICMP packets
    (ping) does nicely, TCP/IP too. I tried using port 10001 as Local Port and 10000 as Remote Port, but this didn't fix

    the problem that there is no OSC incoming / outgoing from the LPC17 core.

  5. Hello,

     

    I have been testing OSC on the LPC17 Core and even with udpmon set to 4, I cannot see any incoming or

    outgoing messages.

     

    What I tried so far:

     

    I set network to dhcp

     

    set osc_remote 3 192.168.64.252
    set osc_local_port 3 8000
    set osc_remote_port 3 8000
    set osc_mode 3 1
    set blm_port OSC3
     
    and start BLM Emulator for OSX. No success.
    Also no success with Lemur.
     
    I can verify that there is no packet filtering in my local network - UDP should pass without
    any issues.
     
    Also what BLM Emulator does: it crashes after a delay of 5s after clicking on the connect button.
  6. Hi guys,

     

    After building my first MIDIbox sequencer V4 back in 2011 () , which is now unfortunately not longer functional, I decided to build a midibox sequencer V4 again.

     

    Is Wilba still offering his Front Panel and PCBs for the V4 (http://www.midibox.org/dokuwiki/doku.php?id=wilba_mb_seq)?

     

    I wanted to make my own front panel PCB with shift registers as SMD parts on the front panel, so it's saving a bit more space, but

    if the PCBs would be still available including the Panel, I'd probably go that way.

     

    Another question (without looking on the code now) is: Can there be more than 2 HD44780 LCDs added (or additionally a SSD1306 OLED)?

    I am planing to use the 2 x HD44780 40x2 Characters for the Standard Functions, but little additional OLED-Displays for some track info.

     

    Cheers

    sylwester

     

  7. Hello,

     

    I have built a ML-303 Clone which uses a MX20 ARM for sound generation etc. and the

    analog ENV, VCF of the original 303 for the rest of the audio path. For the rest, I use a small

    version of the MBSeq V4.

     

    I would like to sell my one and only piece, because I need to get money for my current analog

    synth project (which will be open sourced).

     

    This is how my synth sounds: https://soundcloud.com/seal-bergstr-m/diy-synth-digital-wavetable-oscilaltor-analog-tb-303-filter

  8. I'm currently planing a little synthesizer experiment: a web controlled synthesizer + sequencer (with live audio streaming)

    which consists of the following parts:

    - JS/HTML5 Frontend (finished)

    - Server-side Gateway (to MIDI) (finished)

    - Audio Streaming (via Icecast2) (finshed)

    - Programmable Hardware Sequencer (to be done)

    In order to do this, I want to implement a MIDI-Controlled sequencer, where I can set the Track Length, Groove, Step Value,

    Gate, Velocity etc via MIDI CC Messages.

    What do you think is the best effort of building the Sequencer? I have a spare CORE_STM32 and CORE_LPC17.

    Cheers

  9. Hey,

    I've started to build a very small prototype of my MIDIbox E-Drumkit.

    This started as I've been watching a documentary about Kraftwerk and I just remembered

    my old drafts for a velocity-sensitive drum tigger.

    Components needed: LPC17 core, voltage divider, current-limiting resistor, piezo buzzer

    This is it so far (yeah, the video is kind of boring, but it's intended for showing that

    everything works ok.

    What do you think?

    I'm planning to build a complete drumkit. But next time bigger pads, hats and also

    drum pedals.

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