latigid on

I would consider moving the group of traces on the right hand side away from the edge of the board. Also the trace width seems kind of small? 6mil? I would go with 10mil minimum, but use 16mil if possible. Power traces even thicker. You can save a few header pins (and slightly move apart) the Banksticks by "preconfiguring" them with address pins connected to ground or +5V.

Cool boards! For the Core+SID, maybe check a few clearances: bottom left mounting hole + J5 header (header may be more convenient as a 2*5, or even 2* 2*5 as is done in the Core8. But I see there's not much space) LCD and CAN headers trimmer pot on the left might be too close to the board edge, normally they don't like holes/plating near to the the milling cutter. (Shouldn't there be two pots, one for brightness and one for contrast?) I would put the voltage regulators at the edge of the board, this way they're easier to heatsink if needed and they radiate heat away from the SIDs/capacitors etc. Is there a reason for two bridge rectifiers? Have you thought about the grounding scheme around the SIDs? I know the MB-6582 board has a gap in the ground plane, presumably to keep the digital noise off the audio circuits. You can check the sammichSID layout for inspiration, although it's a little bigger than your 10*10cm.

To reiterate; when using Windows each time the Core resets you need to restart MIOS Studio to properly "sync" the USB-MIDI connection. It's annoying, especially because you have to click through an additional dialogue window asking if changes to the computer are permissible.

Can you get back to the bootloader by pressing (and holding) the blue button? http://www.ucapps.de/mios32_bootstrap_newbies.html Bootloader mode is enforced as long as the blue button is down. I got confused about this a little while ago; you can then upload the bootloader hex file, thereafter you don't need to hold the button any more. Now you have a stable USB-MIDI connection and you can upload your application of choice. I'm not sure if re-uploading the bootloader hex is actually needed...? but it can't hurt.

Just had to fiddle with this the other day :). Install the bootloader hex, that's where you store LCD settings. Note: if you've already bootstrapped your Core the normal MIDI-USB works fine. On Windows you have to restart MIOS Studio every time the F4 board resets. And don't forget to "store" the settings when done.

2.048 is correct. After the op amps you should get to 10.67V max. Check also your power supply to these. Maybe post a photo of your setup/soldering too.

Are you using the bipolar mode? There's a known issue with equal divider resistors.

As a suggestion, we could instead use the "Roman" notation as discussed earlier in the week. Naturally this would have to take the current scale into account; is this too limiting for "non-Western" scales?

I was pretending to be Suisse for a while, but I just torture Nico with my attempted French :).

C'est gentil, merci! Here's the backpack board connected. I made the headers a bit too long but it's not a biggie.

That the test app was loaded is a big clue that not everything was well (tashikoma). So now your task is to check the hardware connections, make sure all boards and shift registers are working, then get the correct firmware loaded. Without any photos of the unit running it's difficult to say how far the original builder got. But if you dive into the firmware files you might find the switches etc. can be customised/tweaked to the hardware you have. Best of luck!

Sorry, I see that you wrote "as-is" in the OP. For the IC, it's probably the same LED driver for the second 7-segment. I guess the decimal point is not wired. The main functions should work fine without this connected.

http://www.ucapps.de/mios_download.html is where you'll find the firmware.

Have you asked the seller about it? Was it sold as working or as-is/for parts? You should connect it to MIOS Studio via MIDI to see if you can communicate with the Core, thereafter you can try to upload the correct application.

Mechanical fits are good :) Next up is getting the switch matrices working properly, deciding on the button assignments and thinking about colour coding. This one's already in the RGB hue sweep thread, but I'll post it again for posterity:

Looks like @julianf (the beast) has panels (front and rear) for 115 GBP if that's more up your alley. And being a "business" he might be able to remove the VAT if it's included in that price.

There's no stupidity, one has to scratch a little bit at a time with such a complex instrument. With regards to chords and scales, an A minor chord always has the same notes played (A, C, E), but whether A is played as a major or minor chord depends on the scale "quality" and root note. Major scale: I ii iii IV V vi vii° so in C we have C Dm Em F G Am B° and back to C minor scale: i ii° III iv V VI VII vii° https://en.wikipedia.org/wiki/Roman_numeral_analysis So the uppercase roman numerals are major chords, the lowercase are minors, and it's all subjective because C uses the same notes as Am. The little circles represent diminished chords, where the interval from the root note is a lowered third fifth. If you use one of the many scale flavours in the SEQ, these will be different again.

If it all works with other displays/cables, then it's the display. TK could probably tell what pin is buggered from the output, but not a mere mortal such as myself. Sadly it's quite easy to cook the onboard registers, even as much as shorting pins together with a multimeter probe, experiments with 5V/3v3 fiddling, backwards cable etc.

Check the orientation/soldering of your resistor network/595. Can't see your pic btw.

Hello! I don't pretend to know everything about the SEQ, I'm only starting to learn it myself and there's a lot to learn! But I think most of the requests/ideas you have are already possible within the current software. If they aren't yet TK. is the guy to tell you if they can be. Have you experimented with the LFOs? One can also assign meta tracks to modulate parameters in time with the sequence If your slider can generate CC data, I don't see why this couldn't be recorded/overdubbed. I haven't gone too deep with the BLM, but you can assign slider data to SEQ parameters (or have it sent out a MIDI port). Force to scale is already present, but what's missing is the gate to tell the SEQ when to play a note. Transpose is implemented and can follow an external keyboard. I'm not following exactly, because you're talking about changing the root note and "quality" (i.e. major/minor) of a scale? Does this make musical sense? Pretty sure you can nudge tracks. Try to sit down and explore the SEQ a bit. The draft manual here is very useful and can give a lot of hints to get the best out of your instrument. Happy sequencing!

Illuminated encoders in full RGB: Now I need those "Waldorf" clear knobs!

Pretty rainbows!

Works well! (at least the LED part). Encoders are up next.

? As far as I know, there haven't been banksticks in use since 2008. You might be confused with Patterns though. You get 64 patterns per Group, so each of Tracks 1-4, 5-8, 9-12 and 13-16 have 64 patterns storable.

Couldn't you just save a "tuning" track, and then load/play when you want to tune up?