Question for those of you who have an oplab module on your OP-Z and pocket operators. Is there a way for you to control the Pocket Operator with the OP-Z? Like use the CV channel to send notes to the PO and have the OP-Z be the brains and sequences instead of the PO? Or is it just that the PO and OP-Z’s bpm and transport are synced together?
The electrical connection is there, but I don’t think the firmware supports it, otherwise they would have added a few components more required to convert the MIDI signal levels. Besides, that is not a trivial code. On the other hand, Volcas do support it, so it should not be impossible to do.
ha i doubt it but wouldn’t that be crazy if midi was there all along.
@johnnyego the chip is an optoisolator and is only needed for midi input.
this site shows what all the JTAG pads are for
but honestly i bet the RX/TX pads (SWDIO/SWO) are already being used for the sync pulse IN/OUT
this should give u an idea of how to hook up the optoisolator for midi input
as well as how to hook up the midi out
nice. you’re talking about the pads on the far right of the backside of a PO, right? I do have the optoisolator laying around in a test circuit…I guess the midi out should then go to ground and on one of those pads, either in or out and able to receive start/stop commands or ccs…
I often think about a CV trig sequencer based on the PO leds…basically the sequencer would drive eurorack. hhmm
now now lets not get ahead of ourselves here
there is no indication that this is implemented in the software
just because the serial in/out pins are available.
the pads i am referring to are top middle on the back between the audio jacks.
i don’t see any test pads on the far right ?
the midi out is 3 connections.
pin 4 is power (47R resistor)
pin 2 is GND
pin 5 is TX (47R resistor)
try it out if u are interested but i’m not holding my breath
i really doubt they would go to all the trouble to implement midi
and then say/do absolutely nothing about it
i’d love to be wrong but like punji said its not trivial
I also don’t have much hope here. If this was available TE would have hinted about it. Anyway, the RX port is the pad marked as SWDIO and the TX port is the pad marked as SWDCLK in the hackingthepo page.
The I/O signals of the EFM32 internal modules can be re-mapped to different pins. SWDCLK and SWDIO is from a debug interface used to flash the firmware, but those pins can be re-mapped to the TX and RX of the low energy serial interface and used for MiDI. Note that this is a bit theoretical, I have not actually tried that out. I do hope that TE reads this and get a clue, it is never too late to release a new PO or even retrofit the old ones as MkII.