Mercury-G4 quadcopter flight controller

For digital FPV. Uses modern hardware, and big solder pads.

Coming Winter 2022

Ultra-low-noise gyro

Built-in ELRS receiver

Designed for DJI and HDZero digital systems

AnyLeaf G4 flight controller
Anyleaf Mercury G4, bottom
Anyleaf Mercury G4, top

Compatible with fixed-wing drones, if you provide an external 5v BEC to power the servos.

Designed to be easy to assemble, with big, clearly-labeled solder pads, and header with pre-crimped wires to connect to a camera and Vtx. There's plenty of room around both sets of mounting holes, so spacers and shock absorbers won't get in the way.

Plug + play with popular ESCs.

Its included cable connect directly to Diatone ESCs. Also includes a cable with separate header you can wire into other configs. Includes a cable for connecting to DJI digital setups too that plugs into the FC.

Suitable for full-size quads, and whoops. The 30mm mounting holes are on break-off tabs, for mounting on small frames.

Includes DJI-digital compatible pin header

Does not include analog OSD support - this is a digital-only FC. Includes a 10V regulator, to provide dedicated, safe power to your Vtx and camera.

Includes a TVS diode, which blocks voltage spikes


The FC circuitry and attached hardware like VTXs are protected from transient battery voltage spikes. If more than 26V is reaches the FC from the battery, current is immediately blocked.

Compatible with DJI and HDZero digital systems

ExpressLRS (ELRS) receiver and antenna

With onboard ELRS, you no longer need to buy and mount a separate receiver. Features lower latency than offboard receivers due to a direct connection with the FC computer.

Compatible with DSHOT-600, and DSHOT-300

Onboard altimeter (barometer), and 16MB black box flash memory

Features robust power filtering and separation, to reduce interference, and provide smooth sensor readings and control response.

Includes anti-vibration rubber dampers