TŒRN — MIDI

The MIDI submenu

Musical MIDI handlers use the TRS MIDI ports. Although the USB build exposes a MIDI interface, USB note, clock and transport handling is not implemented here; use TRS for those connections. USB audio output is available separately for recording the mix in a computer.

Ten pages. Encoder 4 walks siblings; most values turn on encoder 3. Pair with BPM → INT/EXT for full master/slave.

MIDI family entry on the root menu.

CH — note mapping

How incoming MIDI notes land on voices.

Option	Effect
SEL	All incoming channels play whichever voice is currently selected by the grid’s Y position.
MIDI	MIDI channel N plays voice N — fastest for a multi-channel controller.
KEYS	Legacy trigger selector: pitch classes C through G choose sample voices 1–8 at their base pitch; G♯ through B also select voice 8.

1 Encoder 1

2 Encoder 2

3 Encoder 3

Turn	SEL / MIDI / KEYS	Survives reboot.

4 Encoder 4

TRAN — transport

Start / stop / continue messages.

Option	Effect
OFF	Ignore and never send transport.
GET	Listen for MIDI start/stop so an external sequencer can run TŒRN.
SEND	Transmit your transport so external gear follows.

GET pairs with EXT clock; SEND pairs with INT clock.

SEND — what leaves the MIDI out

Option	Effect
CLCK	Clock pulses only — simplest sync-out.
NOTE	Notes only — drive an external tone module.
BOTH	Clock + notes.

No separate OFF on this page — mute notes via RCVE, or stop being clock master via BPM → EXT.

RCVE — incoming notes

Option	Effect
NOTE	Incoming notes trigger internal voices per CH.
OFF	Ignore notes — pure sequencer / recorder.

FOLD — incoming pitch range

Option	Effect
ON	Fold incoming SEL/MIDI notes by octaves into rows 1–15; preview and playback use the visible row pitch.
OFF	Keep the original MIDI pitch for preview, recording, playback, and MIDI out. The note is still folded into a visible editable row; moving it vertically transposes the stored pitch.

FOLD does not alter the legacy KEYS trigger mapping. The setting defaults to ON and survives reboot.

SYNC — SNC1 / SNC2 offsets

Millisecond latency makeup when two clocked devices flam.

1 Encoder 1

2 Encoder 2

Turn	SNC1 / SNC2	SNC1 = send path; SNC2 = receive path.

3 Encoder 3

Turn	Offset −127…+127 ms	Nudge in ±2 ms steps until downbeats click as one.

4 Encoder 4

Tuning: two devices on the same downbeat; adjust SNC2 until the kicks land together. Apply the matching negative on the other device’s send path if available.

PPQN — analog clock pulse

Analog clock on the dedicated 2-pin headers — independent of TRS MIDI. CLK-OUT (J25) is 5 V. CLK-IN (J26) is 3–5 V: on the BPM screen, click encoder 3 for an orange < (analog in) instead of the red < (MIDI in). Pulse width 1–50 ms (default 12).

1 Encoder 1

Turn	Pulse width 1–50 ms	White LED. Default 12 ms.

2 Encoder 2

Turn	STOP / CONT	STOP = pulse only while playing. CONT = always (legacy).

3 Encoder 3

Turn	OFF, then 1 / 2 / 4 / 8 / 12 / 16 / 24 / 32	Pulses per quarter note.
Click	Polarity + / −	Green + = active high. Red − = active low.

4 Encoder 4

Rate 1 = one pulse per beat; 24 ≈ classic Sync24 density; 32 denser than MIDI’s native 24 PPQN. Display follows the last encoder you turned: width, STOP/CONT, or ±rate. This page is output on J25. Incoming analog rate is CIN.

Jacks (rev H silk): CLK-OUT(5V) = J25, CLK-IN(3–5V) = J26, SIDEC-5V = J27 (see TRIG). Pin 1 = signal, pin 2 = GND. Incoming analog clock is read on CIN, not here. Not MIDI DIN and not line-level audio.

TRIG — selected-voice trigger output

5 V trigger on SIDEC-5V (J27) whenever the selected voice actually sounds. This is a trigger signal for external equipment, not built-in sidechain compression. Pulse width and polarity follow PPQN.

1 Encoder 1

2 Encoder 2

3 Encoder 3

Turn	OFF, then voices 1–8, 11, 13, 14	Which notes pulse J27. Default 1 (kick).

4 Encoder 4

CIN — analog clock in

Config for CLK-IN (J26). With orange < EXT on the BPM screen, incoming pulses advance the sequencer. At 4 PPQN each pulse is one step, at 24 PPQN every sixth pulse is.

1 Encoder 1

Turn	WID 1–32	Hold-off in ms: rises sooner than this after a counted pulse are ignored. Keep it below the pulse spacing.

2 Encoder 2

3 Encoder 3

Turn	PPQN 1 / 2 / 4 / 8 / 12 / 16 / 24 / 32	Pulses per quarter note of the incoming clock. Default 4 (one pulse per 16th, Volca).

4 Encoder 4

Display follows the last encoder you turned. The pin-38 interrupt is armed only in orange EXT; INT and MIDI-EXT ignore CLK-IN. Press Play and the sequence starts on the next pulse. At 1 and 2 PPQN a pulse covers 4 or 2 steps: the first plays on the pulse, the rest are spaced by the last pulse interval.

OVWR — overwrite grid notes

Option	Effect
OFF	Incoming MIDI only fills empty cells. Notes already on the grid (same or other voice) stay put. Default.
ON	Incoming MIDI replaces whatever is already in that cell.

Live play still sounds. OVWR only affects what gets written while recording in SINGLE. The setting survives reboot.

Common sync scenarios

Scenario	BPM	TRAN	SEND	RCVE
TŒRN solo	INT	OFF	CLCK*	OFF
Master → drum machine	INT	SEND	CLCK	OFF
Slave to a DAW	EXT	GET	CLCK*	NOTE if needed
Synth-11 from MIDI notes	INT	OFF	CLCK*	NOTE
Two TŒRNs, one leads	INT / EXT	SEND / GET	CLCK / …	OFF

*SEND has no OFF — pick CLCK when you only care about local play; the slave simply ignores unused clock if unplugged.