Your board, drawn.
Settings draws each board, its knobs and faders moving as you move the real ones. Click a control, or just move it, to choose what it does.
Real knobs for your Mac.
The Mac client for deej. Volume for your Mac and your apps, brightness and more, straight from the Arduino or MIDI mixer on your desk.
External screens need an Apple silicon Mac and m1ddc. App volume needs macOS 14.2. Your Arduino sketch stays as it is. The app speaks 12 languages and asks for yours on first launch.
- AMaster volume
- BScreen 1 brightness
Screen 2 brightness - CBrowser
- DBuilt-in display brightness
One knob, several jobs.
The volume of your Mac, your mic, or a single app. Brightness or contrast on the built-in display, or on an external screen with Apple silicon. Night Shift. The MacBook keyboard backlight, or a VIA keyboard's over USB. Screen zoom. Tick one job or several in Settings, of any kind, and they all follow the knob or fader.
Left
BLeft
Right
BRight
The real macOS HUD.
It shows up on the display that knob controls, with the app's own icon for an app's volume. Brightness lands when you let go, so panels never flicker, and you choose how soon in Settings.
2 of 4: Knob B
Turn Knob B back to 0%.
Finds your controls by itself.
Add a board and calibration opens: turn every knob and fader to 0%, then to 100%, then each one back to 0% in turn, and press each button three times. TheeJ learns which input each control is on and which way round it is wired. An SMC-Mixer needs none.
A look at the app.
- Any number of boards. A deej board, an M-VAVE SMC-Mixer and other MIDI controllers side by side, each with its own profiles, shortcuts and calibration.
- The SMC-Mixer, ready to go. Its 8 faders, 8 knobs and 43 buttons are known, over USB or Bluetooth, so it needs no calibration.
- Buttons that do things. Play/pause, the volume keys, mute a fader, open an app or a website, press a shortcut, lock, sleep or switch profiles. Several at once, if you like.
- Lights that dance. The SMC-Mixer's buttons run one of 28 light patterns, from Fire and Comet to a binary clock and EQs that follow your Mac's sound.
- Profiles that travel. Export a profile and import it on another Mac, or in WeeJ on Windows. Or start one from a deej config.yaml.
- Lives in the menu bar. Out of the Dock unless you keep it there. Reconnects on its own, can launch at login, and installs updates in one click.
- Every level at a glance. The menu lists each board with its jobs and their levels, one per line, each app with its icon.
- Profiles on a shortcut. Switch every control's jobs at once, from the menu bar, a button or any app. One shortcut can switch several boards.
- No jumps. A knob takes up a new job the next time you move it, so switching profiles never jumps the volume or a screen.
- Follows your audio device. Switch outputs or inputs and the knobs follow.
- Twin screens stay put. Identical panels stay left and right across sleep and replug.
- Any number of knobs. As many as your sketch sends, from A to Z, then A2, B2 and on.
- Same firmware. Speaks the deej serial protocol, unchanged, at the baud rate your sketch uses.
- Few permissions. Shortcuts need no Accessibility or Input Monitoring access. App volume asks macOS for audio recording access, once. Only a button that presses keys needs Accessibility.
What you need
- Mac
- Apple silicon or Intel
- macOS
- 14 Sonoma or later
- Board
- Any deej over USB, an SMC-Mixer or any MIDI controller
- External screens
- Apple silicon, then
brew install m1ddc - App volume
- macOS 14.2 or later