My PCB's

STM32-Based Flight Controller

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Features:

- SPI bus to interface with a BMI270 IMU and an NRF24L01 module

- 14 pin SWD programming

- Bidirectional DRV motor drivers

- 3.3V LDO power regulator

- Onboard status LED's

ESP32-Based Flight Controller

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Features:

- I2C to interface with MPU6050 IMU

- USB-C programming made possible by CP2102N USB-UART bridge

- MOSFET motor drivers

- 3.3V LDO power regulator

- Automatic source switching for input from either 5V USB input or 3.7V battery input with anti-backfeeding

- Onboard status LED's

Differential Drivetrain Breakout Board

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Features:

- Phase-enable drive for 6 motors using L293D H-Bridges and MOSFET inverters

- Buck converter setup to step 9V down to 6V + 3.3V LDO regulator

- Onboard status LED's

Coil Driver Board

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Features:

- IR sensor with adjustable sensitivity

- OP-AMP based IR sensor driver

- MOSFET + OP-AMP comparator based 32V coil driver