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ESP32-S2 Flight Controller

This is a flight controller based on the ESP32-S3 dual core microcontroller.

Made with DIY in mind: easy accessible 2.54mm pin headers, standard mounting points to fit on quadcopter frames but can also be used for non-drone projects.

For additional flexibility: the included DC-DC board can be mounted at the top or bottom (see pictures), or can be omitted when you use an external BEC or if want to build an ultralight a 1S battery setup.

The ESP32-S3 has 3 hardware UARTs that can be connected to any of the GPIOs.

See madflight.com for schematic and instructions.

Specifications

Specifications ESP-FC2 Flight Controller

• Processor: ESP32-S3 with 4 MB flash and 2 MB psram
• Gyro/Acc: ICM-42688-P
• Magnetometer: QMC6309
• Barometer: HP203B
• Battery Monitor: INA226 with 16 bit accuracy
• Micro SDCARD with MMC interface
• RGB LED
• Operates with 1-4S LiPo/LiIon battery
• Standard M4 mounting holes with 30.5 mm spacing
• 18 GPIO accessible via 2.54mm pin headers
• 6 GND and 6 Power pins on pin header
• 4 pins of external ESCs
• 4 build-in brushed motor drivers
• Reset (EN) and Boot (BT) buttons
• Dimensions: 40.5 x 40.5 x 5 mm
• Weight: 5.1 gr (without pins, DC-DC)

Specifications DC-DC Converter

• Output: 5V 2A continous / 3A peak
• Input: 6.5~20V (for 2-4S battery)
• Dimensions: 20 x 10 x 5 mm
• Weight: 1.8 gr

Packing List

• ESP-FC2 Flight Controller Board (fully assembled)
• DC-DC Converter Board (fully assembled)
• 3-pin pin header

Suggested Pinouts

Pinout for a Quadcopter

Connect 4 ESCs to the round SMD pads marked S1-S4 at the corners (GPIO1-4), and the round battery+ and square battery- pads.

Or connect brushed motors to the square SMD pads marked M1-M4 at the corners (GPIO1-4), and the round battery+ pads.

Pinout for a Airplane