TŒRN — Tempo & MIDI

The BPM screen

Open from menu BPM. The firmware mode is VOLUME_BPM: it bundles global tempo, matrix brightness, and the internal vs external MIDI clock choice. Audio output level is a separate place — see VOL → MAIN.

Clock mode colour key

Mode	BPM colour	Meaning
INT	Cyan digits, green arrow pointing right ("out")	TŒRN is master; emits MIDI clock per MIDI → SEND. External gear can follow.
EXT (locked)	Green digits, green arrow pointing left ("in")	External clock is stable; the big number tracks the measured BPM coming in.
EXT (locking)	Red digits, red arrow pointing left	Still measuring or jittery — wait, check cables, confirm the master is sending clock.

Range: 40–300 BPM. Tap tempo: on this screen, repeated taps on the appropriate touch pad are averaged into the live BPM number — a few clean taps will settle it.

Variant A — Internal clock (master)

Cyan three-digit readout on the left, green right-pointing arrow on the right side of the screen showing that clock is being sent out. Encoder 3 ring lights green.

1 Encoder 1

Short	Exit to draw	Returns to last grid view.

2 Encoder 2

Turn	Matrix brightness 3…255	LEDs only — does not change audio.
Short	Draw-base colour toggle	Idle steps as channel tints vs darker base.

3 Encoder 3

Turn	INT ↔ EXT clock	Flips between internal master and external slave; the choice is remembered across power cycles.

4 Encoder 4

Turn	Set BPM (40–300)	When INT, this is the master tempo.

Variant B — External clock, locked

Green three-digit readout on the left, green left-pointing arrow on the right showing clock is being received in. The arrow blinks softly with each incoming clock pulse. Encoder rows are identical to variant A; encoder 4 in EXT offsets the stored counter without overriding the live clock.

Variant C — External clock, unstable

Red three-digit readout and a red left-pointing arrow — the measurement is still settling or no clock is arriving. Wait a few bars, then re-check the cable and the master.

The MIDI submenu

Five pages under root menu MIDI. Together they decide who follows whom and how cleanly.

CH — note mapping strategy

Option	Effect
YPOS	Map incoming notes by row height on the grid — the controller's pitch picks a voice lane.
MIDI N	Fixed MIDI channel input; all notes go to one voice.
KEYS	Keyboard lanes — chromatic playing across the synth voice.

Choose YPOS for grid-style finger drumming with an external pad; KEYS for playing the poly synth (voice 11) as a normal keyboard.

TRAN — transport

Option	Effect
GET	Listen for MIDI Start / Stop / Continue from outside.
SEND	Emit transport on play / stop here.
OFF	Don't react to or send transport.

Combine sensibly with clock mode: GET pairs with EXT clock; SEND pairs with INT clock.

SEND — what goes out

Option	Effect
CLK	Clock only — for sync-only rigs.
NOTE	Notes only — TŒRN drives a multitimbral expander.
BOTH	Clock + notes.

RCVE — incoming notes

Gate whether incoming MIDI note traffic reaches the internal voices. Use OFF as instant "MIDI thru off" when you only want clock; use NOTE to play the synth from a controller.

SYNC — SNC1 / SNC2 millisecond offsets

SNC1 delays the send path; SNC2 delays the receive path. Range −127 … +127 ms. Use these when oscilloscope loopback still shows audible flam between TŒRN and another clocked device. Encoder 1 picks which line you edit, encoder 2 changes the number.

Tuning workflow: set up two TŒRNs or a TŒRN + drum machine on the same downbeat; adjust SNC2 in ±2 ms steps until the kicks click as one. Apply the matching negative on the other device's send path if available.

Common sync scenarios

Scenario	BPM	TRAN	SEND	RCVE
TŒRN solo, no other gear	INT	OFF	OFF	OFF
TŒRN as master, sync drum machine	INT	SEND	CLK	OFF
TŒRN as slave to a DAW	EXT	GET	OFF	NOTE (if needed)
TŒRN as expander (synth-11 played from controller)	INT	OFF	OFF	NOTE
Two TŒRNs, one leads	INT / EXT	SEND / GET	CLK / OFF	OFF