BulbSync - Bulb Timer Remote

Fire your camera without cables from your phone: bulb, intervalometer and timelapse over Bluetooth, using the same protocol as its own remote (Sony RMT-P1BT, Canon BR-E1).

Control several cameras at once, even from different brands, shooting in sync from a single session.

Astrophotography, star trails, timelapses, photogrammetry, VR/360 and multi-angle.

SHOOTING CONTROL
• Bulb for exactly the duration you set, or exposure decided by the camera.
• Intervalometer with countdown and estimated finish time.
• Anti-vibration delay and focus lock: no contact with the camera, no refocusing on every shot.
• Automatic reconnection after a Bluetooth drop: the session carries on, screen off included.
• Signal alerts before you lose a camera, with an optional alarm.
• Red night mode, to preserve dark-adapted vision.
• Presets, camera groups and session history.

BULBSYNC STICK
• A small device that stays beside the camera and runs the session from start to finish, with no phone required: lock it, walk away or switch it off. When you are back, the app catches up on what happened.
• Exposures last what you ask for: it measures how long each camera takes to open and close the shutter and compensates for it, with several cameras too.
• Several cameras and up to three groups shooting at once on a single Stick, each with its own sequence.
• Progress on its own screen, with three views to choose from, and speaker alerts if a camera drops or the battery runs low.
• Its battery gives about 6 hours of shooting (measured with 320 one-minute exposures, none missed) and over ten in standby; for a whole night, power it over USB-C from any power bank.
• We sell no hardware: it runs on an M5Stack M5StickS3 board you buy yourself. The first install is done from a desktop browser, in one click; from then on, updates arrive from the app. Requires BulbSync Pro.

WILL IT WORK WITH YOUR CAMERA?
• Sony: any Alpha with "Bluetooth Remote Control" — α7 III/IV/V, A7C, A1, A7R IV, A7S III, A9 II, A6100/6400/6600/6700, ZV-1, ZV-E10, RX100 VII and similar. α7 III and α7 IV verified in the field, with BulbSync Stick too.
• Canon: bodies with a "Remote" mode (the BR-E1 one) or "Connect to smartphone". EOS R7 verified in the field. With BulbSync Stick, same protocol, pending verification; EOS R6 Mark II only through the Stick.
• Nikon (ML-L7 remote): implementation complete, currently being verified on real bodies. If you own one, help us close it: run it with debug mode on and send us the log, or write to [email protected].

Check your camera's menu for a Bluetooth remote control mode. The full model list, with what is verified with the app and with the Stick, is at bulbsync.app

FREE
One camera, one preset and the last session in history. A single purchase, no subscription, removes the limits: unlimited cameras and presets, groups, full history, backup, the advanced options and BulbSync Stick.

No account, no ads, no tracking and no internet connection required: everything stays on your phone. Diagnostic log sharing, if it is ever needed, is yours to turn on.