Holybro FETtec FC G4
Description:
The Holybro FETtec FC G4 features the latest STM32 G4 MCU with math accelerator for the ultimate in-flight performance, onboard OSD for KISS flight tuning, 2 dedicated BECs for 5V and 16V switchable power, DSHOT2400 outputs for support of up to 8 motors, and dual 20x20 and 30x30 mounting holes.
Note:
Currently, the Holybro Fettec FC G4 does not support BLHeli_32 ESC Configuration via FC Passthrough and BLHeli_32 ESC telemetry/current reading. An Betaflight Flight Controller is needed to configure BLHeli32 ESC Setting.
Specification
- Latest STM32G4 Processor
- 170Mhz + Math accelerator
- MPU6000
- Supply voltage 6-27V (2S-6S Lipo)
- 2x dedicated onboard BEC (max. 600mA each)
- 5V BEC for RX
- 5V/16V BEC for VTX (switchable and real Pit*)
- 2x 8 pin connector for solder free ESC connection
- Connector 1: ESC signal 1-4, telemetry, VCC, GND
- Connector 2: ESC signal 5-8 (depending on UAV type 1-4), telemetry, VCC, GND
- 1x 8 pin connector for solder free VTX, cam connection and OSD or digital systems
- real Pit* VCC, GND, Video in, Video out, BEC 5V/16V, VCS/TX3, RX3
- 2x 6 pin connectors for serials
- RX1, TX1, 3.3V, VCC, 5V, GND
- RX3, VCS/TX3, RGB LED, VCC, 5V, GND
- 1x 4 pin connector for receiver
- 5 UART serials
- UART 1 free
- UART 2 used for Receiver
- UART 3 free
- UART 4 used for onboard OSD, can be set free
- UART 5 used for ESCs / TLM / Onewire
- 4 ESC solder pads (Signal/GND) in each corner
- Buzzer pads
- 4 tiny RGB LEDs (selectable color)
- Supported ESC protocols
- PWM, Oneshot125, Oneshot42, Dshot150/300/600/1200/2400, FETtec Onewire
- FETtec KISS firmware
- Onboard OSD
- Graphic OSD (STM32)
- Full KISS Tuning
- Filter (PIDs, Rates, Settings)
- LED control (RGB LED, Racewire)
- VTX
- Live data graphs (Voltage, motor rpm, current, motor temp, gyro values, link quality)
- KISS GPS support + live map
- Custom graphic pilot logo
- Stick overlay
- Custom layout
- can be deactivated for usage of digital systems
- Connector type: JST-SH-1mm
FETtec 4in1 45A ESC
The FETtec 45A 3-6S ESC is a powerful 4-in-1 electronic speed controller that has a mounting pattern of 30.5x30.5 and supports Dshot 300-2400, OneShot 42/125, PWM, Crossfire, SBUS, and other features!
Specifications
- Active current limiting @ 45A
- Input voltage: 3S-6S
- High-quality 40V MOSFETs
- STM32G071 @ 64MHz
- 128 kHz Motor PWM
- Full sine wave control
- Soldering holes for up to 5 additional capacitors
- KISS FC Passthrough
- Betaflight Passthrough (available in 4.1)
- Automatic input signal detection:
- Dshot 300-2400
- PWM
- OneShot 42/125
- OneWire BUS with up to 8kHz loop time (one cable for all Motorsignals and Telemetry)
- In development: Crossfire, SBUS
- 38 mm x 38 mm
- Mounting hole: 30.5 mm x 30.5 mm, M3 expandable to M4

