midiclock

midiclock · sources · schema v1

Hardware MIDI transport bridge. Locks to a MIDI device and surfaces the System Real-Time stream as gate/CV: clock (gate) at a user-selectable subdivision — 24=quarter (default, patch directly into TIMELORDE.clock to slave it to the external transport), 12=eighth, 6=sixteenth, 3=32nd, 1=raw 24 PPQN; run (cv, 0/1) tracks transport state; midistart + midistop fire one-shot gates on MIDI Start (0xFA) and Stop (0xFC). Continue (0xFB) raises run without re-firing midistart, so downstream loops resume in place. Channel-voice messages are ignored — pair with MIDI-CV-BUDDY (or HELM) for note/velocity. Same Web MIDI / ConstantSource / 2 ms lookahead plumbing as MIDI-CV-BUDDY.

Brings an external MIDI device's TRANSPORT into the patch as clock and run signals — the transport-only sibling of MIDI-CV-BUDDY (which carries the notes). MIDI sends 24 clock ticks per quarter note, plus Start / Stop / Continue messages; MIDICLOCK divides that tick stream down to a usable pulse and tracks the play state. Mental model: it's the bridge that lets a hardware sequencer, drum machine, or DAW be the master clock for the whole rack — connect a class-compliant USB-MIDI device, pick it from the card's dropdown, and patch its CLOCK output into anything that wants a beat (a SEQUENCER's CLOCK IN, TIMELORDE, an envelope trigger). The card has a device picker and a clock-division select; there are no audio-side knobs because every setting (device + division) is a discrete choice that lives in the saved patch, not a continuous AudioParam.

the faceplate

0 inputs · 4 outputs · 0 params

about this module

Hover a control, or open the patch panel and hover a jack.

outputs

id	cable	what it does
`clock`	gate	A short ~5 ms pulse whose rising edge fires once every N incoming MIDI ticks, where N is the card's clock-division setting (MIDI runs at a fixed 24 ticks per quarter note, so N=24 gives one pulse per quarter note, 12 an eighth, 6 a sixteenth, 3 a 32nd, and 1 the raw 24-PPQN tick stream). Patch it into a SEQUENCER's CLOCK IN or TIMELORDE to slave the rack's timing to the external transport. On a MIDI Start the divider re-zeros so the first pulse lands cleanly on the downbeat. gate / trigger
`run`	cv	A level that sits at 0 while the external transport is stopped and rises to 1 while it is running; it latches to 1 on both MIDI Start and MIDI Continue and drops to 0 on MIDI Stop. Use it as a gate to enable downstream modules only while the master transport is playing. control voltage (CV)
`midistart`	gate	A one-shot pulse whose rising edge fires the instant a MIDI Start message (0xFA) arrives — the 'play from the top' signal. It does NOT fire on MIDI Continue, because Continue exists precisely to resume mid-song without re-zeroing downstream loops; patch this into a reset/restart input to snap things back to the beginning when the transport starts fresh. gate / trigger
`midistop`	gate	A one-shot pulse whose rising edge fires when a MIDI Stop message (0xFC) arrives. Patch it where you want something to fire exactly when the external transport halts (mute an envelope, reset a counter, drop a gate). gate / trigger

source

midiclock.ts on GitHub.