4 layers

StealTheMoon
choicebuilds/automatic-storage-unit
A 1 layer PCB built from scratch within 36 hours in the RoboTechs hackathon using an ESP32, fabricated using the LPKF Protomat and Protolaser.
22 parts
Open-source boards designed in KiCad by choicebuilds on GitHub, from 2 repositories. A board’s address here is its repository’s there.

choicebuilds/automatic-storage-unit
A 1 layer PCB built from scratch within 36 hours in the RoboTechs hackathon using an ESP32, fabricated using the LPKF Protomat and Protolaser.

choicebuilds/SumoBot-v2
A Robojackets robot (v2) built from scratch, featuring a custom 4-layer PCB, STM32-based (ARM Cortex-M3) firmware written in C (STM32CubeMX + CMake), and a 3D-printed chassis.