M-217 Trig/gate to MIDI w. velocity (8HP)

M-217 Trig/gate to MIDI with variable velocity (manual or voltage controlled)

12 trig/gate input jacks
velocity CV jack + minimum velocity knob (see below)
setting button
MIDI out + LED

Covers all possibilities of M-215 and M-216 and adds variable/adjustable velocity. Works in two modes:

  1.  “One MIDI channel” (like M-215) – sends notes in halftone mode (one octave) or according to Jomox/Volca/TR8 drum placement
  2.  “12 MIDI channels” (like M-216) – sends same note but on 12 MIDI channels

Internal jumpers:

  • mode is selected by top jumper (jumper set = M-215/one MIDI channel mode, jumper removed = M-216/12MIDI channel mode)
  • bottom jumper is used for sending MIDI message at the end of trig/gate as “note_on, velocity=0” (so note off, jumper set) or as “note_off, velocity according to current velocity CV input” (some MIDI equipment can process  note_off velocity with interesting results)


  • in “One MIDI channel” mode (M-215):

Short button press (under 1s) = octave up transpose (common octave for all inputs). Transpose is available in 7octaves in halftone mode and in three octaves in Jomox/Volca modes. Indicated by LED blinks
Holding button for 1-10s = changes MIDI CH (1-16 gradually, common for all inputs). Indicated by LED blinks, shirt blink = 1, long blink = 5 (for example long+long+short = CH 11).
Holding button over 10s = disables setting button to avoid unwanted changes. Another holding over 10s enables setting button again.
Holding button at power-up = changes note map (halftone->Jomox->Volca Beats->TR-8->halftone…)
All settings (octave, MIDI channel, note map and button lock) are memorized.

  • in “12 MIDI channels” mode (M-216):

Short button press (under 1s) = halftone up transpose (common note for all inputs, sent on 12 MIDI channels according to inputs)
Holding button for 1-10s = octave up transpose
Holding button over 10s = disables setting button to avoid unwanted changes. Another holding over 10s enables setting button again.
Note setting and button lock are memorized.

Minimum velocity knob + velocity CV input:

Working input range is 0-5V. If knob is set to minimum 0V or negative voltage makes velocity = 0,   5V or more makes velocity = 127.

Knob sets “minimum velocity”: if no CV is connected then knob works as manual velocity setting (0-127). If an CV is used to modify velocity then knob sets minimum velocity sent. Say knob is set to mid of range (velocity=64) – until CV is lower than knob setting velocity (=64) is used for triggering MIDI equipment. If CV exceeds knob minimum velocity setting then velocity according to current CV is used for MIDI message. This allows making simple accents – simply put an trig/gate (5V or more) into velocity CV input when accent should be made and trig note input(s). Or connect an LFO voltage into velocity input jack – knob sets minimum, LFO sometimes increases velocity above knob setting…

Note map in “One MIDI channel” mode:


Width: 8TE/ 8HP/ 40mm.
Depth: 40mm /1,6″ max.
Current: 25mA max.
Power cable included.

Double check power connection before powering your system please.
„Red strip“ means -12V connector side in Eurorack standards.
In some power distribution systems connector key can be reverted.
In this case cut connector key and plug power connector right way (with respect to red strip) or use different power cable appropriate to your power system.

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