Hey Bruno,
I'm a bit new to the pedal, but I did indeed try this 2-3 times. It appeared to store the setting correctly.
Just to be crystal clear:
• set Expression mode: MIDI
• set MIDI Thru: (L) MIDI Out
• Global Tempo: R (L) global tempo
• MIDI Channel: 1
Then "power cycled" which I assume means to disconnect and connect the power adapter.
Should the knobs send MIDI that correspond to internal controllers, and also receive these controllers?
I noticed zero MIDI input on my interface (iConnectivity MIO10) and also, even configured to send clock, Logic did not set the tempo of the pedal.
I just tested it again and the polymoon's tempo remains constant no matter what tempo I'm sending. (sad face™)
Just to clarify, your wiring does not have any resistors inline? I'm doing a strain pin->pin wiring based on your grid-sketch above.
Also, thank you again for taking the time to explain this to us.