The PrincipIoT F7 is a robust and versatile flight controller designed for FPV UAS, featuring a powerful STM32F7 ARM Cortex-M7 processor and an ICM-42688-P IMU for precise stabilization and flight control. With a compact 38x38mm design, the controller is lightweight, weighing only 7g, and supports 3-6S power input, making it ideal for a wide range of drone configurations.

Engineered with plug-and-play connectivity, the flight controller simplifies the setup process for users, incorporating high-current power rails for peripherals and durable connectors. Expansion options allow for integration with other sensors and systems. The flight controller is National Defense Authorization Act (NDAA) compliant and proudly designed and tested in Bothell, WA, USA, with manufacturing in Renton, WA.

Features

• Powerful Processor: The onboard ST Microelectronics F7 processor enables running the latest and most advanced flight control algorithms
• Full Sensor Suite: Features an onboard ICM-42688-P IMU and DPS310 barometer. Onboard connectors enable adding a GPS and magnetometer for fully autonomous flight
• Small Size: Only 7g and 38x38mm. Fits the standard 30.5×30.5mm mounting pattern common in FPV drones.
• Flexible Power: The flight controller provides high current regulated power rails for a video transmitter, receiver, GPS, camera, and servos.
• Fully Plug and Play: Standardized connectors and full compatibility with the Betaflight connector standard ensure fast, soldering free assembly
• Software Compatible: The flight controller is officially supported by Betaflight and comes preinstalled with the latest Betaflight 4.5 release. INAV support is in progress (beta FW available).

USA Made and NDAA Compliant

This flight controller is National Defense Authorization Act (NDAA) compliant and proudly designed and tested in Bothell, WA, USA, with manufacturing in Renton, WA.

This includes the following sections of the NDAA:

• FY2020 NDAA Sec 848
• FY2023 NDAA Sec 817
• FY2024 NDAA/American Security Drone Act

Full information on sourcing and country of origin for all components is available under NDA. Email info@principiot.com for more information.

Detailed Specs

Processor & Sensors

• MCU: STM32F722 ARM Cortex-M7 Processor
• IMU: ICM-42688-P
• Barometer: DPS310
• Blackbox: 16MB (W25Q128)

Software Compatibility

• Fully compatible with Betaflight (PRINCIPIOTF7 target)
• INAV support coming soon

Power Input & Sensing

• Supports 3-6S input with onboard voltage sensing
• Max input voltage: 26V

Power Outputs

• 10V 2A for VTX
• 5V 2A for receiver, GPS, camera, and servos
• 3.3V 600mA (shared with main processor, max 300mA external draw)
• Dedicated LDO regulator for IMU
• Backfeed protection between 5V regulator and USB

Connectors

• JST-SH connectors compatible with Betaflight standards for:
• ESC
• Receiver
• GPS
• Analog Camera
• VTX
• USB-C connector for configuration and bench power

Expansion Header

• UART (2x)
• I2C
• Motor outputs (8 total)
• Beeper
• Servo outputs (2x)
• LED Strip
• PINIO (2x) (PINIO Documentation)
• Onboard LEDs (2x)

Dimensions & Weight

• Size: 38mm x 38mm overall
• Height: 8.5mm max
• Mounting Holes: 30.5mm x 30.5mm (M4 or M3 with included shock dampers)
• Weight: 7g (including dampers)

Additional Features

• SWD pins on 2.54mm header for development
• SPI bus pins available on test points
• Designed, assembled, and tested in the USA
• NDAA Compliant

What's Included

• PrincipIoT F7 Flight Controller
• 4x Anti-vibration rubber grommets
• Connector kit with precrimped wires and connector housings

Got questions?

We offer OEM support and quantity discounts on larger orders. For more information visit our website or email us at info@principiot.com