2 layers

ESP32Anglerfish
Matchboxscope/Matchboxscope
ESP32-based mini microscope for fluidic device observation
7 parts103
Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.

Matchboxscope/Matchboxscope
ESP32-based mini microscope for fluidic device observation

Matchboxscope/Omniscope-USB-Hub
A simple 4-port USB2 hub based on the SL2.1A design.

Matchboxscope/Matchboxscope
ESP32-based mini microscope for fluidic device observation