BETAFPV Air 5IN1 Brushless Flight Controller

The BETAFPV Air Brushless Flight Controller (5IN1) combines a flight controller, 1S 5A ESC, OSD, serial ExpressLRS 2.4GHz receiver and 5.8GHz VTX on an ultra-thin 0.8mm board weighing 3.6g. It was the first 1S FC on the STM32G473 processor, which BETAFPV says computes 55% faster than the F411, and it is aimed at experienced pilots chasing the lightest possible 65–75mm whoop.

Key features

• 5-in-1: FC + ESC + OSD + VTX + serial ELRS 2.4GHz RX
• STM32G473 at 168MHz, ICM42688P gyro, up to 8K sample rate
• Onboard 5.8GHz VTX, 25–400mW
• 16MB blackbox; 3 full serial ports for GPS, HD VTX or an external receiver
• 3.6g on a 0.8mm board

Specifications

Compatibility

• Video: analog only - pair with an analog micro camera and analog goggles. For DJI O4 builds use the Matrix 1S 3IN1 HD.
• Motors: solder only, no plugs. The 5A ESC suits 0702 / 0802 motors on 65-75mm whoops; for 1102 motors on the Meteor75 Pro the 12A Matrix 1S 5IN1 II is the safer choice.
• Battery / radio: 1S only; built-in ExpressLRS 2.4GHz needs an ELRS radio.

Works with (available at AeroFlow)

• Frames: Air65 II, Air75 II
• Motors: 0702 II, 0702 (2026), 0802 (2026)
• Camera: BETAFPV C03; goggles: BETAFPV VR04
• Radio: RadioMaster Pocket (ELRS)

See the BETAFPV whoop fitment chart.

In the box

• 1x Air Brushless Flight Controller (5IN1)
• 1x 2.4G receiver antenna, 1x 5.8G VTX antenna
• 1x Type-C to SH1.0 adapter, 1x SH1.0 4-pin cable
• 1x BT2.0 U whoop pigtail, 40mm
• 4x M1.4x4 self-tapping screws
• 4x shock-absorbing balls

Important

• Motor wires must be soldered (no plugs); keep the iron below 370°C and contact to 1–2 seconds
• Connect the VTX antenna before powering on, or set VTX power to 0
• Use 25–100mW indoors
• Do not re-flash the ESC repeatedly in quick succession