#Simple timelapse/intervalometer app for Flipper Zero, works via GPIO pins.
1 frame - simple timer, 0 frames - infinite mode, -1 frames - BULB mode
When the timer is running, all buttons are blocked except OK.
camera remote connector
Take optocouplers, connect according to the scheme.
Camera pinout can be found here: https://www.doc-diy.net/photo/remote_pinout/