Holybro Pixhawk 4 Autopilot PX4 Flight Controller

Price range: £179.00 through £194.90 Inc. VAT

Pixhawk 4 is a very popular autopilot designed to run PX4 and ArduCopter firmware. It has been out of stock for a long while due to component shortages, but is now back in stock!

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Description

Pixhawk​®​ 4 features advanced processor technology from STMicroelectronics​®,​ sensor technology from Bosch®​​, InvenSense®​,​ and a NuttX real-time operating system, delivering incredible performance, flexibility, and reliability for controlling any autonomous vehicle.

The Pixhawk 4’s microcontroller has a 2MB flash memory and 512KB RAM. With the increased power and RAM resources, developers can be more productive and efficient with their development work. More complex algorithms and models can be implemented on the autopilot.

High-performance, low-noise IMUs on board are designed for stabilization applications. Data-ready signals from all sensors are routed to separate interrupt and timer capture pins on the autopilot, permitting precise time-stamping of sensor data. Newly designed vibration isolations enables more accurate readings, allowing vehicles to reach better overall flight performances.

The two external SPI buses and six associated chip select lines allow to add additional sensors and SPI-interfaced payload. There are total of four I2C buses, two dedicated for external use and two grouped with serial ports for GPS/Compass modules.

The Pixhawk 4 autopilot development kit is perfect for commercial users and developers at research labs, startups, and for academics.

Note:
Downloads:

Groundstation: QGroundControl – You can use QGroundControl to load firmware onto the Pixhawk 4, setup the vehicle, change different parameters, get real-time flight information and create and execute fully autonomous missions.

Specification
  • Main FMU Processor
    • STM32F765 – 32 Bit Arm ® Cortex® -M7, 216MHz, 2MB memory, 512KB RAM
  • IO Processor
    • STM32F103 – 32 Bit Arm® Cortex®-M3, 72MHz, 64KB SRAM (Current)
    • STM32F100 – 32 Bit Arm ® Cortex® -M3, 24MHz, 8KB SRAM (Discontinued)
  •  On-board sensors
    • Accel/Gyro: ICM-20689
    • Accel/Gyro: BMI055/ICM-20602
    • Mag: IST8310
    • Barometer: MS5611

Electrical Data

  • Power module output: 4.9~5.5V
  • Max input voltage: 6V
  • Max current sensing: 120A
  • USB Power Input: 4.75~5.25V
  • Servo Rail Input: 0~36V

Mechanical Data

  • Dimensions: 44x84x12mm
  • Weight(plastic case): 33.3g
  • Weight(aluminum case): 49g
Downloads
Quick Start Guide (pdf, 270KB)
Datasheet (pdf, 211KB)
Pinouts (pdf, 521KB)
Q&A

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Shipping

SHIPPING & DELIVERY

We are based in the UK and ship to most destinations worldwide.

We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.

A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.

We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.

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Shipping to the UK

  • Order before the daily dispatch cutoff for same day dispatch.
  • FREE delivery available on qualifying orders over £99 (under 1kg).

For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.

Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.

International Postage

  • USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
  • Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.

Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.