jeff-cn / esp-fc

Espressif based budget flight controller

ESP-FC Flight Controller

The mini, DIY, ~$5 cost, ESP8266 based, high performance flight controller.

Features

• Frames (Quad X)
• Betaflight contiguration tool compatible
• Receiver protocol (8 channel PPM)
• ESC protocols (PWM, Oneshot125, Oneshot42, Multishot, Brushed, Dshot150, Dshot300, Dshot600)
• Configurable Gyro Filters (LPF, Notch, dTerm)
• Blackbox recording (OpenLog serial)
• In flight PID Tuning
• Flight modes (ACRO, ANGLE, AIRMODE, ARM)
• Up to 2kHz gyro/loop in acro, 1kHz with accelerometer (level)
• MSP protocol interface
• Cli interface
• Resorce mapping
• Buzzer
• Lipo voltage monitor
• Failsafe

Requirements

Hardware:

• Wemos D1 Mini board (D1 Mini Lite too, ESP-12 for experienced users)
• MPU6050 I2C gyro (GY-88, GY-91, GY-521 or similar)
• PDB with 5V BEC
• Buzzer and some electronic components (optionally).

Software:

• Betaflight Configurator (v10.7)
• CH340 usb-serial converter driver
• Espressif Flash Download Tools

Flashing

Windows: download and unzip Espressif Flash Download Tools

Configuration

After flashing you need to configure few things first:

1. Configure pinout according to your wiring, especially pin functions, you can find more information in CLI Reference
2. Connect to Betaflight Configurator and setup to your preferences,
3. Test motors without propellers
4. Have fun ;)

The rule of thumb is if you cannot change specific option in Betaflight Configurator, that means it is not supported.

Wiring diagram

Supported protocols

Protocol	ESP8266	ESP32
UART	Yes	Yes
I2C	Yes	Yes
SPI	-	Yes
MSP	Yes	Yes
CLI	Yes	Yes
PPM (IN)	Yes	Yes
SBUS	-	Yes
IBUS	-	-
BLACKBOX	Yes	Yes
PWM (OUT)	Yes	Yes
ONESHOT125	Yes	Yes
ONESHOT42	-	Yes
MULTISHOT	-	Yes
DSHOT150	Yes	Yes
DSHOT300	Yes	Yes
DSHOT600	-	Yes

Supported devices

Device	ESP8266	ESP32
MPU6050/I2C	Yes	Yes
MPU6000/SPI	-	?
MPU6500/I2C	?	?
MPU6500/SPI	-	?
MPU9250/I2C	?	?
MPU9250/SPI	-	Yes
BMP280/I2C	Yes	Yes
BMP280/SPI	-	Yes
HMC5883/I2C	Yes	Yes
HMC5883/SPI	-	?
AK8963/I2C	-	Yes

? - not tested

Issues

You can report issues using Github tracker

Development

• Visual Studio Code
• PlatformIO
• Git

Todo

• Update documentation
• Mixers: Quad+, Bicopter, Tricopter, Helicopter, Custom and more
• Balancing robot
• Serial Rx (IBUS)
• Baro (MS5611)
• GPS navigation
• ESP32 board

Licence

This project is distributed under MIT Licence. Bear in mind that:

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Donations

If you like this project and you want it to be still developed, you can support me a little.

• BTC: 1Lopez7yPtbyjfLGe892JfheDFJMMt43tW
• LTC: LV3G3sJxz9AYpDMYUp8e1LCmerFYxVY3ak