2 layers

TRANSMITTER SMD
vul-os/zana
Zana — open-hardware for the physical world: robot mowers, security & cleaning bots, sensor nodes and cameras that plug into any control plane. Build them yourself. FreeCAD + KiCad.
12 partsMIT
KiCad boards from 760 GitHub repositories tagged “hardware”, the most starred first; open any of them in PCBKit.

vul-os/zana
Zana — open-hardware for the physical world: robot mowers, security & cleaning bots, sensor nodes and cameras that plug into any control plane. Build them yourself. FreeCAD + KiCad.

wasylews/soilsense
A low-power soil moisture and climate sensor on an ESP-01, powered by a single 18650 cell for an estimated six months. Custom PCB and a 3D-printed enclosure.