TŒRN — MIDI

The MIDI submenu

Six 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
YPOS	MIDI channel N plays voice row N — fastest for a multi-channel controller.
MIDI	Notes hit whichever voice is currently selected on the grid.
KEYS	Pitch drives synth notes; sample voices trigger from velocity.

1 Encoder 1

2 Encoder 2

3 Encoder 3

Turn	YPOS / 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.

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

Optional analog clock on Teensy pin 31 (J11 / I2SC_3V) — independent of the TRS MIDI jacks. Follows INT BPM or EXT MIDI clock. Pulse width ~12 ms.

Control	Encoder	Options
Polarity	2 turn	+ active high · − active low
Rate	3 turn	OFF, then 1, 2, 4, 8, 12, 16, 24, 32 pulses per quarter note
Page nav	4 turn	Other MIDI siblings

Rate 1 = one pulse per beat; 24 ≈ classic Sync24 density; 32 denser than MIDI’s native 24 PPQN.

DIY 3.5 mm adapter: tap the onboard JST PH 1×05 header J11 (silk / net I2SC_3V). Middle and right pins: white = Teensy pin 31 → jack TIP; blue = GND → jack SLEEVE. 3.3 V logic — not a MIDI DIN or line-level audio input.

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 a keyboard	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.