# Raptor Pilot Pro FC

> An ArduPilot flight controller with three IMUs from three makers, led by a tactical-grade ADIS16470, and direct power from a 5S–12S battery.

- Category: ArduPilot flight controller
- Maker: London Defence R&D, Milton Keynes, United Kingdom
- Product group: [Flight electronics & platforms](https://londondrd.uk/products/flight-electronics)
- Product page: https://londondrd.uk/products/raptor-pilot-pro-fc
- Documentation: https://londondrd.uk/docs/raptor-pilot-pro-fc
- Enquiries: https://londondrd.uk/contact?product=raptor-pilot-pro-fc

## Overview

Raptor Pilot Pro FC is the flight controller we design for our own drones. It runs ArduPilot on an STM32H753 processor at 400 MHz, and its main sensor is a tactical-grade ADIS16470 IMU, factory calibrated from −10 to +75 °C.

It carries three IMUs from three makers: Analog Devices, TDK and Bosch. Each one has its own SPI bus and its own power supply, so a fault in one sensor cannot take the others down. ArduPilot EKF3 runs three lanes, one for each IMU. Two barometers on separate buses back each other up in the same way. The IMUs sit on a heated island, cut off from the rest of the board, so they work at a steady temperature.

Six full UARTs, two CAN FD buses, two I2C ports and eight PWM/DShot outputs connect it to the rest of the aircraft, all on JST-GH connectors. It takes power straight from a 5S–12S battery, and USB alone is enough for work on the bench. Every external port has ESD, PTC and eFuse protection. The board is 40 × 55 mm.

## Key characteristics

- Three IMUs from three makers (ADI, TDK, Bosch), each on its own SPI bus and its own LDO
- Tactical-grade ADIS16470 primary IMU with 8 °/h in-run bias
- Two barometers (Bosch BMP581, TE MS5611) on separate buses
- Heated, thermally isolated IMU island with a 1.8 W PWM heater
- 6 full UARTs plus an ESC telemetry UART, 2 CAN FD, 2 I2C and 8 PWM/DShot outputs
- Direct 5S–12S LiPo input (18–52 V), and bench work on USB power alone
- FRAM parameter storage, microSD logging and USB-C with a DFU bootloader
- ESD, PTC and eFuse protection on every external port

## Specifications

| Specification | Value |
|---|---|
| Firmware | ArduPilot (EKF3 with three lanes) |
| MCU | STM32H753IIK6, Arm Cortex-M7 @ 400 MHz |
| Flash / RAM | 2 MB / 1 MB |
| IMU 1 (primary) | ADI ADIS16470, tactical grade, ±2000 °/s, ±40 g, 2 kHz ODR, 8 °/h in-run bias |
| IMU 2 | TDK ICM-45686, ±4000 °/s, ±32 g |
| IMU 3 | Bosch BMI088, high vibration, ±2000 °/s, ±24 g |
| Barometers | Bosch BMP581 (±6 Pa relative), TE MS5611 (±1.5 hPa absolute) |
| Compass | None on board, external via GPS port I2C or CAN |
| UART | 6 full + 1 RX-only for ESC telemetry |
| CAN | 2 × CAN FD, up to 5 Mbps, 120 Ω termination on board |
| I2C | 2 |
| Motor outputs | 8 × PWM / bidirectional DShot |
| Input voltage | 5S–12S LiPo (18–52 V, abs. max 60 V) |
| Peripheral 5 V | 1.9 A total, 0.75 A PTC per port |
| Storage | 32 KB FRAM for parameters, microSD for logs |
| USB | USB-C, USB 2.0 Full Speed, DFU bootloader |
| Connectors | JST-GH 1.25 mm |
| Dimensions | 40 × 55 mm, 6-layer PCB |

Specifications may change. We confirm the exact figures against the current datasheet when you ask.

## Common questions

### Does it run PX4?

No. It runs ArduPilot only. The board is not in the official ArduPilot builds, so the firmware comes from us.

### Is it Pixhawk compatible?

Yes. It is Pixhawk compatible and uses JST-GH 1.25 mm connectors, so GPS modules, telemetry radios and CAN devices made for Pixhawk connect to it.

### Does it have a compass on board?

No. Connect an external compass through the GPS port over I2C, or over CAN.

### What can power it?

A 5S–12S LiPo battery, 18–52 V, straight in. On the bench, USB power alone is enough.

### Where is it made, and where are the parts from?

It is designed and built in the United Kingdom. The processor is from STMicroelectronics, the IMUs from Analog Devices, TDK and Bosch, and the barometers from Bosch and TE. All main parts are Western-made.

### Is it export controlled?

We class Raptor Pilot Pro FC as a dual-use item outside the UK strategic export control lists. We still check the end user and destination for every order.

## Related products

- [Raptor Pilot AI](https://londondrd.uk/products/raptor-pilot-ai): The mission computer for drones and robots. It sees at 60 FPS and decides on board, so nothing has to leave the aircraft.
- [Raptor Power 12S 4in1 ESC](https://londondrd.uk/products/raptor-power-esc): A 6S–12S four-in-one ESC for drones. Each motor has its own processor and gate driver, with current, voltage and temperature telemetry.
- [Raptor Power 900 KV Motor](https://londondrd.uk/products/raptor-power-motor): A top-grade 900 KV brushless motor for interceptor drones and fast FPV platforms. It gives up to 4.15 kg of thrust across a wide 4S–12S range.

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London Defence R&D · https://londondrd.uk/products/raptor-pilot-pro-fc · Content updated 2026-11-04