FC
-
MCU: STM32G473CEU6
- Gyro: ICM42605, 8KHz
- Blackbox memory: 16MB
- Sensor: Voltage & Current, Barometer (TCBP001TA)
- BEC: 9V@2A, 5V@3A
- UART: UART 1, UART 2, UART 3 (For RX), UART 4 (For HD VTX)
- Betaflight OSD: /
- ESC: 30A continuous
- RX: Serial ELRS 2.4GHz (V3.5.6)
-
FC firmware: 2025.12.0-beta_BETAFPVG473_V3
- USB port: SH1.0-4Pin
- Motor connector: JST1.25
- Battery connector: XT30
- Mounting hole size: 26mm x 26mm
-
Weight: 6.8±0.2g
ESC
-
Power input: 2-4S Lipo/LiHV
- Current: 30A continuous
- ESC firmware: v0.19.2 48KHz Bluejay
-
Firmware target: C-X-70 48KHz.hex
- Digital signal protocol: DShot150, DShot300, DShot600
RX
- RX: Serial ExpressLRS 2.4GHz
- Antenna: Copper wire 31mm length
- Firmware target: BETAFPV 2.4G AIO RX
- Telemetry output power: <12dBm
- ELRS firmware version: ELRS 3.5.6
- Flash firmware via WIFI: Support
Digital-Ready 3IN1 FC
Engineered specifically for digital VTX whoops, the Cube 3IN1 FC consolidates the STM32G473 MCU, 2-4S 30A ESC, and Serial ELRS 2.4GHz RX into a single compact board—streamlining builds while reducing complexity. The STM32G473 MCU running at 168MHz delivers excellent computing capacity for responsive flight performance, while additional serial ports reserved for external devices like GPS modules offer room for customization and upgrades.
2-4S Continuous 30A ESC
By integrating 2oz thick copper on the board to enhance thermal efficiency and current handling, the Cube FC features a significantly upgraded 2-4S Bluejay ESC—delivering a robust 30A continuous current, up from 20A in F405 FCs. This ensures reliable power delivery to meet the surge demands of Pavo whoops during aggressive freestyle maneuvers, giving pilots the confidence to push their limits.
Serial ELRS 2.4G RX
Serial ELRS 2.4G RX uses the Crossfire serial protocol (CRSF protocol) to communicate between the receiver and the flight controller board. So the Serial ELRS 2.4G RX is available to support upgrading to ELRS V3.0 with no need to flash Betaflight flight controller firmware. Enter binding status by power on/off three times.
- Plugin and unplug the flight controller three times;
- Make sure the RX LED is doing a quick double blink, which indicates the receiver is in bind mode;
- Make sure the RF TX module or radio transmitter enters binding status, which sends out a binding pulse;
- If the receiver has a solid light, it's bound.
The Serial ELRS 2.4G RX can be updated via Wi-Fi or Betaflight serial passthrough. Here is the way to update the Serial ELRS 2.4G RX firmware through passthrough.
- Plug in your FC to your computer, connect to ExpressLRS Configurator instead of Betaflight Configurator;
- Choose target "BETAFPV 2.4GHz AIO RX";
- Flash using the BetaflightPassthrough option in ExpressLRS Configurator.
How to flash firmware via Wi-Fi here.
Bluejay ESC Firmware
With BB51 ESC solution, Cube Brushless Flight Controller is based on V0.19.2 48KHz Bluejay, it supports DShot150, DShot300, DShot600, and even RPM filtering in Betaflight, offers 24KHz, 48KHz, and 96KHz fixed PWM frequency for options, and custom start-up melodies.
DO NOT flash the firmware with a shorter interval, otherwise, there will be a certain chance of stalling and burning the flight controller.
How to Use Serial Ports, Intergrated RX and VTX
Please note that by default, UART3 is connected to the RX and UART4 is connected to the HD VTX. To release UART3, please remove the resistor. Additionally, this FC reserves 2 complete full-featured serial ports that can be used for external CRSF/SBUS receivers, GPS, or other serial devices. You can refer to the below pictures.
Package Includes:
- 1 * Cube Brushless Flight Controller
- 1 * 220uF 25V Capacitor
- 1 * 30mm Connector Cable for Digital VTX
- 1 * 50mm Connector Cable for Digital VTX
-
1 * 50mm XT30 Cable
- 1 * USB Adapter
- 1 * USB Adapter Cable
- 4 * 8mm Shock Absorbing Balls
- 4 * 6.6mm Shock Absorbing Balls
- 4 * M2 Nuts
- 4 * M2*10 Screws
- 2 * 0.8mm Heat Shrink Tubing
