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Bump for price drop. :)

Hi all - I need to free up some rack space and I haven't been using these as much as I was hoping. They're tested and working well, though you'll need to calibrate your Seq V4+ so they match your sequencer (very straightforward process). Selling for $225+shipping in the US, if you're interested but international we can figure something out! :)

Thanks latigid! I'll give the long one a shot once I get the euro modules ordered to see how it performs (hoping to have the seq centrally located in the studio). I'll fall back to the shorter one if it's not up to the task. :)

Not sure if I missed this - but is the maximum length for the Seq->eurorack db25 cable the same as any db25 cable (15 feet) or should it be shorter to avoid issues? Thanks!

Number 8 perhaps? :D Though I think I have to get the beat LED installed to get the official stamp! How much clearance should I leave to fit your LED diffuser? Thanks again everyone! If anyone has similar problems to the ones I faced I'll be happy to share my experience. :D

You rock! Had a few more hurdles to get over (bad I2C cable) but it's alive! Still have a couple things to finish before calling it complete - beat LED and I ran out of 10 pin connectors for the LineTX cable from LeMEC_R, but it's looking good! Thank you Andy, Peter, Bruno and the rest of the midibox community for all your patience, wisdom, and troubleshooting help! Thank you TK and Adrian for your efforts on this project as well! Can't wait to learn the ins and outs!

:D Got all the MEC switches/LEDs installed and working correctly now! Having a strange issue with the Matias switch LEDs - all the buttons and encoders on both boards are still working. I initially had a few red LEDs that weren't working, I've replaced those with the spares and they're great now, red lights are all good on both boards. Blue lights working great on LeMEC_R. On my LeMEC_L (I've got the right board this time ) every 4th blue LED isn't appearing. Top row missing #4 and #8, bottom row missing #4 and #8. I did replace the #4 bottom row LED to get the red working again but the blue problem still happens. Picture of the board: https://imgur.com/a/39nPcFc

Good news: I've figured it out! Ugh this will teach me not to work on projects until 2am! I had the LeMEC boards in the wrong order. Everything is working great now. So sorry for wasting your time Peter and Andy! Though I think some good troubleshooting steps came out of it nonetheless.

Hah I'm an idiot and just realized % is the MIOS comment character! I was wondering what %turns was referencing. Testing the LeMEC_R - it seems to be booting up with the dout pins enabled and doesn't seem to react if I manually set the value to 0. Both buttons and encoders all fully function. The core has NG loaded but behaves this way with and without the sd card loaded. Is that suspicious? Edit: For the next person that does this - YES this is suspicious, doing the above test on the second board caused lights to turn on on the JA board. If you have the boards in the correct order this should not happen!

Whoops, forgot I have to right click to copy the terminal data instead of using Ctrl+C! Here's the actual input: [1240259.981] set dout 0 1 %turns first output on [1240260.142] DOUT Pin 0 (SR#1.D7) set to 1 [1240383.356] set dout 0 0 %turns first output off [1240383.517] DOUT Pin 0 (SR#1.D7) set to 0 [1240401.956] set dout 7 1 %turns eigth output on [1240402.117] DOUT Pin 7 (SR#1.D0) set to 1

Yep I'm beginning to think the same! I ran the following (minor correction to use 0 instead of d0, MIOS didn't like the d): [1240259.981] set dout 0 1 %turns first output on [1240260.142] DOUT Pin 0 (SR#1.D7) set to 1 Tested the encoders again with no luck. Then reset to d0=0: [1240259.981] set dout 0 1 %turns first output on [1240260.142] DOUT Pin 0 (SR#1.D7) set to 1 Then enabled d7: [1240259.981] set dout 0 1 %turns first output on [1240260.142] DOUT Pin 0 (SR#1.D7) set to 1 Tested the matias switches with no luck. I tried once immediately after booting up, and once after loading seq_l. Same results both times. I'll remove the IC and get another one ordered. Thanks again!

Definitely looks like something is up around IC2 Pins 15, 1-7 (QA-QH): 0v (pins 3-5 seem to occasional show .001v) Pin 9 (QH*):.422v Pin 10 (SCL): 4.8v Pin 11 (SCK): 2.7v Pin 12 (RCK): 4.8v Pin 8 & 13 (GND): 0v Pin 14 (SER): .46v Pin 16: 4.8v On the working LeMEC_R: Pins 15, 1-7 (QA-QH): .586v, Pin 9 (QH*): .493v Pin 10 (SCL): 4.8v Pin 11 (SCK): 2.7v Pin 12 (RCK): 4.8v Pin 8 & 13 (GND): 0v Pin 14 (SER): .422v Pin 16: 4.8v I reflowed the resistors around IC2 just to make sure the top soldering wasn't bad and confirmed the resistor networks are in correctly they're the same part and orientation between both boards. Also checked all the 4148 diodes and the voltage seems good (4.8v everywhere).

@latigid on thanks that definitely gives me a better understanding of how the button matrix is working. I'll try tacking down the cc pin of the superfluxes tonight. All of the encoders seem to be working fine, I can see the CC values increment and decrement correctly in MIOS Studio. As much as troubleshooting can be frustrating it definitely helps teach me about circuit design! Appreciate the hand holding.

I went through and reflowed all the IC and transistor/diode pins, double checked with a magnifying glass but still no luck with the buttons. I'm admittedly a bit weak when it comes to digital circuits, would it make sense to look at the IC that joins the serial data from LeMEC L and LeMEC R or is the problem likely before the LeMEC L data gets that far? Is the button design similar to the original seqv4? I was looking in other threads to see if I could find someone else that's had similar problems.