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latigid on

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  1. Effect pedal, MIDI on a Jack.[SOLVED]

    in Design Concepts

    Posted

    Shoddy work! Not only do they use a non-standard connector, they use non-standard wiring and make an external optocoupler necessary. What happens if you get the connections wrong and plug a 15V CV in there? 

    How did you hope to power the optocoupler? Is there +5V on the ring terminal (measure with a voltmeter/multimeter)?

    I would assemble the parts on a piece of protoboard and mount in a small box. I thought the lump in the cable was an inline DIN female, meaning you could extend with a longer cable if you needed. If that's above you, you could use an IIC module PCB. I have one if you need or you could upload the brd file to OSH park. There, you could use a DIN female, the opto, diode etc. are already present, then connect jack to header J4:

    5b93673301e11_TRSI2C.thumb.PNG.222583d89

  2. Waveshare Core

    in Design Concepts

    Posted

    I wasn't aware of the difference, I don't know much about micromatch. For the SEQ, it's very unlikely you'd need to connect/disconnect. If it was necessary, there's always the 0.1" standard pinheader, just a bit more effort and more clunky. 

  3. Waveshare Core

    in Design Concepts

    Posted

    Hi Bruno,

    As the connectors are not intended to stack, I suggest to use paddle connectors on both of wCore/USB. Both installed on the top of the PCB and wired straight through. This works well as seen in Peter's video. Maybe other connectors are possible (?) but not necessary here I think. 

    Does that answer the question?

    Best,
    Andy

  5. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    Hi Bruno,

     

    large.product-sheet-label-montage5-small

     

    The operation is quite different in that the group/track/layer buttons are now accessed through the Selection row. The selection row function is in turn switched by the 8 buttons around the larger wheel knob. So now you would choose Track; this gives access to the tracks on all 16 buttons. The Group structure (G1/2/3/4) is preserved to maintain compatibility. A big benefit is that multiple selections are now possible, which would have been quite difficult with the old workflow. Another benefit is that the Selection row can stay active while using the GP buttons above. Layers are accessed in a similar way. Hopefully the labeling is more intuitive now, and users don't feel limited to 3 layers of trig/para. Bookmarks are now brought out to the front panel.

    With the MEC buttons, there's functionality not explicitly present in the v4 (e.g. Live). Also, each encoder has an independent switch, so no one should run out of buttons. Normally the switches would be assigned to acceleration though.

    Maybe Peter can fill in anything I've missed.

    Best,
    Andy

    • Like 1

  8. Effect pedal, MIDI on a Jack.[SOLVED]

    in Design Concepts

    Posted

    I'm not confident I can work it out from the vague description; it's not your fault. MIDI is a current loop and the cables are passive. Normally resistors would be a good idea if you don't know what's what, but in this case they might hinder the operation by limiting the current. If you don't mind taking a risk or two, try the orientation you describe and swap it around if there's no joy. For a MIDI in, normally the 0v (ground) pin is not connected at the port. So you may wish to leave the sleeve of the TRS plug disconnected. Leave the pin two of the DIN connector connected to shield the cable. 

    You're free to use a male DIN or even cut an old MIDI cable apart to avoid using a female adapter plug.

    Best of luck, YMMV etc.

  17. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    5 hours ago, Antichambre said:

    I'm waiting for new UI PCB before checkout... I suppose the ENC plates don't change, I've got v1.0?

    Enc plates I think are unchanged since v1.0. Perhaps some diodes were moved around to lessen the chance of accidental shorts.

    le mec is now at v1.3. Basically unchanged but some differences (mostly to do with minimising ghosting).

  18. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    As far as painted keycaps go: it could work. I spent weeks emailing trying to get painted caps, but they would have been fully painted and much more expensive. So the idea with model train paint could be cool!

    Personally I love the look of blank illuminated keys:

     

     

  19. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    We could still label the Matias switches e.g. between the Matias rows. As you mentioned, the "GP" labels are printed on screen anyway. The selection row does change its function, and not all functions are 1-16, e.g. for selections regarding tracks, the group terminology (GxTy) is still used. Personally I quite like the "clean" look without extra labels.

    Regarding brightness, Peter has gone for a fairly bright incarnation. If it was too much, you could easily increase the RJ values to limit the current. Personally I don't find the brightness too bad with 49R9s in my build. 

    There are two further options that might help. First, we are ordering a set of relegendable switchcaps. These won't be available for some time, but could be a type of upgrade. The cost will be more than the default DSA clear (which by the way have some diffusion on the top of the cap), as each cap comprises two parts. Then all Matias switches could be independently labeled.

    Second, you can choose the colours of the step LEDs. Notice on TK.'s demo that positions 1/5/9/13 use a different step colour to the rest. This might help to differentiate them.

    Best,
    Andy

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