Use this board as a flight controller, or use the on-board 10DOF best-in-class sensors for a precise orientation sensing project. It offers more free GPIOs than the Raspberry Pi Pico2.

Made with DIY in mind: easy accessible 2.54mm pin headers. Use the standard 30.5mm x 30.5mm mounting holes to fit your drone frame. Or use double sided tape to mount the board, the board has no components on the back.

The layout of the pins is similar to the Raspberry Pi Pico2, but with added 5V power pins to make it easy to connect external components like RC receivers, GPS with compass, 4-in-1 ESC, servos, radars, etc.

See madflight.com for schematic and detailed instructions.

Power the board directly from 3V to 6V (e.g. USB or 1S LiPo), or use the included DC-DC converter to connect 2S-5S batteries. For added flexibility the DC-DC board can be top or bottom mounted.

Even when using all internal functions, the external pins can be used for:

• 22 PWM pins
• 8 DSHOT pins
• 6 Serial Ports (2 Hardware + 4 PIO UARTs)
• 1 I2C Port
• 1 SPI Port
• 6 ADC pins

Specifications

madflight FC3

• RP2350B with 48 GPIO
• 16MB Flash
• 30 pins accessible via 2.54mm pinheader
• 9 power and 9 ground pins
• 5 additional GPIOs accessible via SMD pads
• Gyro/Acc: ICM-42688-P Precision Gyro/Accelerometer
• QMC5883P Magnetometer
• BMP580 Precision Barometer
• INA226 16-bit Batery Monitor
• WS2812B RGB LED
• SDCARD with click mechanism and fast 4-bit SDIO interface
• Optional PSRAM or second Flash (empty SO-8 socket on back of board)
• Standard 30.5 x 30.5 mm mounting with 4x Φ4mm holes, with grommets Φ3mm
• Dimensions: 50.7 x 41.6 mm (4.2 mm max height)
• Weight: 5.6 gr (without DC-DC)

DC-DC Converter

• Output: 5V 2A continous / 3A peak
• Input: 6.5 ~ 20V
• Dimensions: 20 x 10 x 5 mm
• Weight: 1.8 gr

Packing List

• Assembled madflight FC3 Board
• Assembled DC-DC Converter Board
• 3-pin Pin Header for DC-DC