SP Racing F3 Flight Controller

SP Racing F3 is flight controller designed by Seriously Pro. Seriously Pro.

Features

• Practical - Easy to access connectors and solder pads.
• Configurable - Choose to use connectors, solder pads or pins.
• Stackable - Mount to your PDB or OSD.
• Compact - Only 36x36mm.
• Professional - Symmetrical, Neat and Tidy.
• 8 Dedicated PWM outputs
• 8 PWM Inputs
• 36 I/O Connections
• 72Mhz Clock Speed
• 3 Hardware Serial Ports
• 64Mb Flash Storage

Package Included

• PCB
• Header pins
• Cables

Versions

1. Acro
2. Deluxe

Differences between versions, the Deluxe comes with: MS5611 barometer HMC5883 compass/magnetometer

Deluxe

Magnetometer

The board has a built in magnetometer using the HMC5883 chip.

Magnetometer Conflict M8N GPS with Compass

When using a M8N GPS with built in external HMC5883 magnetometer, the external HCM5883 will not work due to conflicts with built in SP Racing F3 internal HMC5883 chip. The solution would be to desolder, or cut the traces, to the SP Racing F3 internal HMC5883 chip.

Otherwise, specify the external MAG by cli command mag_hardware. The value differs from firmware to firmware, e.g.:

CleanFlight (and probably BetaFlight): https://github.com/cleanflight/cleanflight/blob/master/docs/Cli.md

iNav: https://github.com/iNavFlight/inav/blob/master/docs/Cli.md

There is a repeated discussion on iNav thread on this subject. https://www.rcgroups.com/forums/showpost.php?p=35357776&postcount=7411

Clones

Issues

Some clones have a buzzer design flaw where the buzzer connector negative is connected to the main ground plane of the board causing the buzzer to buzz constantly. The fix is to use the buzzer pads on the underside of the board instead.