BETAFPV F4 1S 5A AIO ELRS Flight Controller from BetaFPV — a compact and lightweight control board for mini-FPV drones, combining a flight controller (FC) and a 5A ESC in one module. This AIO solution is designed specifically for high-speed whoop frames and racing builds where minimal weight and maximum functionality are crucial.

Key Features

The F4 1S 5A AIO model features a built-in Serial ExpressLRS 2.4G receiver with firmware update capability via Wi-Fi or Betaflight serial passthrough, including ExpressLRS V3.0 support. The board has a high-quality six-axis BMI270 gyroscope, BB51 ESC hardware with Bluejay ESC firmware, and an integrated 8MB flash chip for Betaflight Blackbox logging, which significantly simplifies diagnostics and fine-tuning of the flying platform.

Design Profile and Compatibility

Board size: 30×30 mm with 26×26 mm mounting holes, fully compatible with popular whoop frames. There are two versions of the board: classic (weight 3.64 g with motor connectors) and Light (weight 2.96 g, without soldered motor connectors, but with included connectors for easy installation). All weights are given without the power cable.

Advantages

• Integrated Serial ExpressLRS 2.4G receiver with easy firmware updates.
• 8MB internal memory for Blackbox — a convenient tool for flight analysis.
• Compact dimensions and thoughtful component layout for a lightweight and aggressive build.
• Ability to reduce aircraft weight with the Light version or use the classic version with soldered connectors.

Flight Controller (FC) Specifications

• CPU: STM32F411CEU6 (100MHz)
• Gyroscope: BMI270 (six-axis)
• Built-in Receiver: Serial ExpressLRS 2.4G
• Receiver Antenna: linear antenna
• FC Size: 30×30 mm
• Mounting Hole Size: 26×26 mm
• Firmware Version: betaflight_4.3.0_BETAFPVF411 (ELRS)
• OSD: built-in BetaFlight OSD
• Blackbox: 8MB flash
• Recommended VTX: ≥200mW, e.g., BETAFPV M03 350mW or TBS Unify VTX
• Power Cable: 55mm with BT2.0 connector
• Weight: 2.96 g (Light — without motor connectors) / 3.64 g (with motor connectors); both — without power cable

ESC Specifications

• Power Supply: 1S
• Current: 5A continuous, 6A peak (3 seconds)
• ESC Firmware: A_X_5_.HEX for Bluejay BB51 hardware
• Signal Support: DShot300, DShot600

Recommended Components and Compatibility

• Battery: BT2.0 300mAh 1S
• Frames: Meteor65, Meteor65 Pro, Meteor75
• Propellers: 31mm 4-blade (for 65mm frame) / 35mm 3-blade (for 65mm frame) / 40mm 4-blade (for 75mm frame)
• Motors: 0802SE or 1102 brushless motors
• VTX: M03 25-350mW VTX (25mW to 350mW variants supported)

Mounting Features

The Light version comes without soldered motor connectors, allowing direct soldering of motor wires to the board to reduce resistance and increase current throughput; at the same time, separate motor connectors are included for convenience. The component layout, vibration protection (rubber dampers included), and low weight make the board an optimal choice for lightweight, maneuverable, and aggressive FPV drone builds.

Package Contents

• 1 × F4 1S 5A AIO Brushless Flight Controller ELRS
• 4 × M1.2×4mm screws
• 4 × M1.4×5mm screws
• 4 × anti-vibration rubber dampers
• 8 × motor connection connectors (included for Light version)

Product Category: Drones & Quadcopters > Stacks (FC+ESC). Integrated ELRS, compact 30×30 mm dimensions, 26×26 mm mounting, 8MB Blackbox, STM32F411, BMI270, and Bluejay BB51 make this BetaFPV controller an excellent choice for boosting your whoop drone's performance.

Other products in this category here Stacks (FC+ESC)