Identify all CV inputs

[wraybowling]

• [x] retrigger
• [x] play/pause
• [x] roll
• [x] clock division
• [x] tempo
• [x] roll rate

[wraybowling]

The three action buttons are sharing signal with their respective cv inputs

• A0 retrigger
• A1 is play/pause
• A3 roll

[wraybowling]

Using a multimeter and some long metal wire to probe, I believe that the tempo CV goes through

• what I think is a schottky diode for circuit protection to ground

1. a 10k resistor mounted in the center of the jack's leads
2. a normal diode going forward on the south side of the jack
3. pin 9 (ltr wrapping) of the right-side 2x5 header between boards 1-2
4. pin 2 of the right-side header between board 2-3
5. the normal/host side of the lowest configuration pin which shunts to the center pin
6. pin 1 of the right-side header between board 2-3
7. pin 3 non-inverted input (2nd down on slanted side) of a 072AC Texas Instruments dual op-amp on board 2
8. pin 1 output from op-amp (1st down on slanted side)
9. another diode just north of the op-amp
10. pin 15 of the CD4051BM multiplexer that's on the top left of board 2

which would be channel 2 .. which has already been identified as the tempo knob ... which means that perhaps the tempo cv and knob are added together?

[wraybowling]

Confirmed with a scope yesterday that tempo CV and tempo knob are combined on a single pin. the knob raises the floor value. the maximum voltage of both is what's on multiplexer channel 2