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latigid on

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Posts posted by latigid on

  3. Midi Socket For CORE_R4D

    in MIDIbox SID

    Posted

    Probably MABPM 5S. DIN sockets are quite standard -- no surprise :)

    To be extra careful, measure the distance between pins at the edge of the PCB. Should be 10mm but there are two standards, hence both can be used on the PCB (two pairs of holes). 

  4. midiphy wirescanner - introducing a graphical cable testing toolkit :)

    in Miscellaneous

    Posted

    I have the same "IDC crimping tool" but favour simply using a bench vise. For micromatch MOW cables I leave the polarising tab outside and it works well for me. If you have different tools that work for you, all good!

    As far as testing other cable types go, there is a plan to build a "backpack"/"shield" that spans across the IDC16s. Then in theory any connector could be wired in. 

    It's a really fun project to build and you can see it working straight away. :)

  5. Where do the bridges go on the v4 core board

    in MIDIbox SID

    Posted

    Hi Alistair,

    Generally I would only populate parts where there is a silkscreen indicator. This is certainly a double-sided board and the Core is quite a basic circuit, so you won't need any jumpers I am 99% sure. All pin headers seem to be indicated with a J prefix.

    Any plated holes that don't have a corresponding silkscreen mark are probably vias that join the top and bottom copper planes. You will probably be able to see the copper tracks leading to the vias from the difference in colour. Or if there is no track, the via connects to a 0V/ground plane But yes, it is harder to make out with black solder mask!

    If you are unsure, put your multimeter in continuity test mode (or resistance) and check the electrical connections. 

    Best,
    Andy

  7. Where do the bridges go on the v4 core board

    in MIDIbox SID

    Posted

    Is it a two-layer board with green soldermask? Then no bridges are required.
    If it is a single-layer board, find the "quickview" or .brd file on uCapps. Probably the red wires represent the top bridges, with blue as the bottom layer already patterned on the copper side.

    Feel free to post a picture of your board here to check.

  10. MBNG All Lights On Code + Best way to Power

    in MIDIbox NG

    Posted

    You could write an NGR script to address LEDs in sequence:

    https://github.com/midibox/mios32/tree/master/apps/controllers/midibox_ng_v1/cfg/midiphy

    It is a very hacky script and could be much nicer with a few for loops.

    You can use the MIOS terminal command 

    set dout all 1

    (or 0 if the cathodes sink into 595 inputs). It really depends on your setup, whether you have transistors, whether you drive LEDs in a matrix etc.

    You will need a better +5V PSU though as whatever MCU you are using might drop out of regulation with too much draw.

     

  15. LoopA V2 Introduction, Features & Support Thread

    in MIDIbox User Projects

    Posted

    Some people noticed that the LoopA can get stuck in booloader hold mode. As a potential remedy, install resistors R101 and R102. If you don't have the exact values it doesn't really matter. JPA0 should be left unjumpered except if you want to enforce bootloader hold.

    With the resistors installed the state of PA0 is properly defined rather than floating. If you don't notice the issue, no need to change it! The BOM is updated to reflect this.

  25. Enclosures?

    in Parts Questions

    Posted

    What other CAD software experience do you have? If it's all new and you'd rather not learn, Protocase is still okay. With the possible costs of e.g. a Fusion subscription and a few design iterations of the first attempts you do, probably that $340 is pretty good. If you want to develop your skills and do more case work in the future, definitely go down that route.

    Another option would be to design the panel as a PCB, have it fabbed and find a matching case for it e.g. the PT-10. Yet another option is to design an acrylic case that can be laser-cut in 2D and snaps together.

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