Multitimer

Try it on the watch

Presets

Preset 1

Preset 2

Preset 3

Preset 4

Preset 5

Preset 6

Preset 7

Preset 8

Preset 9

Preset 10 (0 on the watch)

Beep style

Like the official face: beepbeepbeep each second, for up to 10 s between intervals and 20 s at the end, until you press a button.

One short high beep at each interval; a half-second ring at the end.

Short beeps at 5, 4, 3, 2 and 1 s left in every interval, then the ring.

Guide

Source · upload multitimer.min.js to the watch · Open in emulator · All faces

A feature-parity replacement for the official Ollee TIMER face that adds simultaneous timers: up to three countdowns run at once, each with the full TIMER feature set.

  • Same as the official face: edit to 23:59:59, start / pause / clear, 10 presets, interval mode, fast mode, and the same buttons for each.
  • Added: three independent timers (number shown on the day digits), switched with A + L; the face opens on whichever timer finishes next; presets can be saved from the watch, and the presets and beep style can be baked in with local.json.
  • Different: LAP stands in for the blinking bell, which Forge faces can't control; the weekday digits show the Forge slot name (FA–FC) instead of TI.

Beep styles

Three ways to beep, baked in with local.json or chosen over Bluetooth (see below); the face starts on stock:

Style Interval change Timer end / end of interval set
stock (S0) Like the official face: beepbeepbeep every second for 10 s while the next interval runs; any button silences it The same triple pattern for up to 20 s, until a button
ping (S1) One short high beep (beepShort) A short high beep every half second for up to 20 s, until a button
countdown (S2) A short high beep at 5, 4, 3, 2 and 1 s left in every interval, then beepbeepbeep The same countdown, then the half-second ring

On another face, beeping you can't stop is capped at 5 s in every style, and the second-by-second cues (the stock triple pattern, ping's interval beep, the countdown) only play while the face is on screen (see Off screen).

Buttons

Button Does
A + L together Switch timer 1 → 2 → 3
L Edit (seconds → minutes → hours → done); clear when paused
A Increment while editing (hold to repeat); start / pause / resume
Hold L (idle) Browse the 10 presets; L next, A load, hold L save the current time to that preset
Hold A (idle) Interval mode: run presets 1–10 in sequence, stopping at a zero preset
A at 00:00 00 Fast mode (F): waits; each L adds a minute
  • LAP blinks while the timer on screen runs; PM means another timer is running.
  • A timer finishing on screen beeps for up to 20 s; any button stops it. On another face it beeps for at most 5 s, then the face opens on that timer next time.
  • Presets, the beep style and running timers reset when the watch reboots (Forge has no storage yet).
  • A phone can set the beep style, replace the presets or start a timer over the Forge Bluetooth service (formats below).

Off screen

multitimer runs best in the foreground. Forge cancels a face's timers when it leaves the screen, and the only clock event that reaches a face in the background is the once-a-minute tick.

  • Running timers keep counting from timestamps, so they show the right time when you come back.
  • A timer that ends while you're on another face is caught at the next minute tick, so it can ring up to 59 s late.
  • Timers that end exactly on a minute ring on time, so for background use set whole-minute timers and start them as the minute turns over.
  • The emulator still fires timers off screen, so it rings on time there; expect the watch to behave as above.

Bluetooth messages

Write to the Forge RX characteristic (C6FB0002-A37D-40AC-89BE-887D25E1F5B3). Today that means the emulator's Bluetooth panel: as of October 2026 the watch's firmware doesn't expose the Forge service.

Beep style: the text S0, S1 or S2 (stock, ping, countdown), typed into the emulator's Bluetooth panel or nRF Connect's text mode.

Presets and timers: one 45-byte binary message (the emulator panel sends typed text, so it can't send this one):

Byte Meaning
0 Target timer, 0–2
1–3 HH MM SS to start with (mode 1)
4 Mode: 0 save presets only, 1 start the target with HH:MM:SS, 2 start the target in interval mode
5–44 10 presets, each a little-endian uint32 of seconds (clamped to 23:59:59)

Bytes 1–44 match the official Ollee app's 02 26 timer payload. Send it as three writes, each prefixed with a sequence byte: [0] + bytes 0–18, [1] + bytes 19–37, [2] + bytes 38–44. A write out of order discards the partial message.

local.json

Bake your own presets and beep style into a personal build with a local.json (gitignored), e.g. {"multitimer": {"beepStyle": 2, "presets": [60, 180, 300, 600, 900, 1500, 1800, 2700, 3600, 0]}}. node build.js then also writes multitimer-local.min.js (gitignored) to upload instead.

  • beepStyle: 0–2 (stock, ping, countdown); any other value loads as stock.
  • presets: 10 whole seconds, each from 0 to 86399 (23:59:59).
  • A zero preset ends interval mode: the sequence stops before it, and a zero in slot 1 means interval mode never starts.
  • Bluetooth S0–S2 still changes the beep style at runtime.