latigid on

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  1. Seq V4+ news?

    Just a few notes on SMT soldering. The process can be a whole lot quicker than THT, as you never need to clip a lead. It's true that you can't easily desolder chips, but the advice about hot air rework stations is sound. I've done the same before, even reusing 600 LEDs for the BLM. Practising on a test PCB is also smart. The die inside a SOIC chip is probably the same as in a DIP. The package and leads are much smaller for SMT though, and with DIY you're normally socketing the ICs. So overheating is an issue. I suggest the "tack" method to anchor one corner, correcting the alignment then going down just one row at a time. Hold the soldering iron at a low angle (close to the PCB) if possible and heat the pad, then apply solder to the pin. This keeps the heat source away from the IC and uses surface tension to wick the solder in. I suggest against "drag soldering" as it's possible to scratch the soldermask. For bridges, I've found an el cheapo solder sucker removes the excess quite well.    
  2. Seq V4+ news?

    The SEQ V4+ (antilog) hardware is validated and we have some PCBs available, although the mechanism of the shop etc. is not quite ready. The last piece of the puzzle is the case, which is still in progress from Adrian. If you want something ready-to-go, with all through-hole compenents etc., then go for the Wilba version (contra: there's no ready-made case available and CNC-routed panels are quite expensive). SEQ V4+ features should be compatible with all STM32F4 versions; this includes both the Wilba and antilog variants. if you don't mind waiting a bit and want a "high-quality" solution/enhanced hardware suited to the current SEQ workflow, then the SEQ v4+ is the right way to go.  it does involve SMT soldering, although it is not super difficult being 1206/SOIC. The Wilba version is certainly more straightforward in terms of the main control surface. the case from Adrian will make a "complete unit," hence we wait to see what Adrian brings :)
  3. MBSEQ V4L MkII problems

    Hi, I thought it was around somewhere :) for LPC. Sorry about the outdated doku,,, Could you please try with the attached files? We need to get @TK.'s attention to get a proper build in the SVN. There may be a problem with MIDI; in this case try:   SESSIONS/DEF_V4L/MBSEQ_C.V4 file: Old: MIDI_BUS_Options 0 0x00 New: MIDI_BUS_Options 0 0x01   midibox_seq_v4l_092_pre1.zip
  4. AOUT_NG not working

    Could be the known issue of a 1:1 voltage divider: But it's already claimed to be okay for the quad VCA, if that's your usecase.    
  5. Issue with Sign-up and Contact forms, not working

    Notifications have also not been working for a while. @Hawkeye may be able to help.
  6. R3 DIN Printed Circuit Board or Kit

    http://www.ucapps.de/ has the info you need. Best, Andy
  7. MIDI IN help required please.

    Okay, so you want to record incoming note data and output that on a particular MIDI port. First, is your track set up to output on the correct MIDI channel? http://wiki.midibox.org/doku.php?id=mididocs:seq:beginners_guide:start#track_event To get something working initialise the track; you should get four steps of C3. Make sure that will play on the configured output. You can enter basic notes with the GP buttons and encoders. To record, use the following: http://wiki.midibox.org/doku.php?id=mididocs:seq:beginners_guide:start#entering_notes It takes a bit more effort, but should work. If things are not working properly, there may be an issue with your soldering or a MIDI feedback loop (the outputting controller is receiving the same data it's sending).  
  8. MIDI IN help required please.

    What are you trying to do? Set up for live recording? If you just want to forward the MIDI IN -> OUT, set up a router node as shown in the guide above.
  9. MIDI IN help required please.

    http://wiki.midibox.org/doku.php?id=mididocs:seq:beginners_guide:start#appendix_3_the_midi_router
  10. Really cool, both the tune and the build! 
  11. LoopA v2 prototype

    Nice job Peter! Looking forward to the software updates. Best, Andy
  12. New wilba CS - button problems

    Hopefully all of your resistor networks are of the right type and soldered correctly?
  13. PCBs for sale

    I think I did it this way as Core J10B is wired to 3v3 (3v0 on a Disco board). Generally the logic levels shouldn't be mixed. It's just a matter of how the display expects its data.       
  14. PCBs for sale

    Just follow the normal LCD setup by defining the desired number of displays through the bootloader app. I think the first 8 are still selected by J15, but I'm sure you could configure 64 lines using the Disp Driver CS if wanted. It may be useful to power the driver at +5V if the OLEDs are locally regulated. 
  15. LoopA v2 prototype

    Similar, they are Matias Quiet Click. On the plus side, they are "more backlightable" than Cherry/clones, on the downside the keycaps are less readily available. But we have the supply sorted for anyone interested in PCBs. The quality and feeling is just as good if not better than Cherry.