Open-source boards designed in KiCad by SmallKatMQP on GitHub, from 5 repositories. A board’s address here is its repository’s there.
SmallKatMQP/FootPressureSensors
SmallKatMQP/IMU-Breakout
SmallKatMQP/RS485-SPIConverterBoard
SmallKatMQP/SmallKatBatteryCharger
SmallKatMQP/TailControllerBoard