Do any of you know if it is possible (and how, if it is possible) to control the start/stop and record arm buttons via midi? Ideally I would like to use a bluetooth midi footswitch to start a recording so I can play with both hands without having to press play and record, and then try to play at the same time.
I did some investigating and it looks like the start/stop in tape mode is controlled via midi system real-time messages, transport and clock, not CC. I tried this with Ableton live and you can start/stop the op-1 f internal playback via start/stop on Ableton while in beat match mode on the op-1 f. When in midi sync mode you can control start/stop and transport back to the beginning of the current looped section of the tape (by pressing stop twice).
To control system real-time start/stop via foot pedal you will need a device like the beatbars FS3 or the Disaster Area Designs midibaby, though I haven’t used either of the devices yet. To stop and reset the loop you will need to use a midi host pedal that can send its own clock information. Both of the aforementioned can act as midi hosts.