4 layers23.4 × 25.4 mm

Low Power LoRa
SorenGilkeyJohnson/LowLoRa
A solar powered, batteryless LoRa (expandable) sensor node powered from a supercapacitor charged by a small solar cell using an energy harvester.
70 parts3CERN-OHL-S-2.0
Open-source boards designed in KiCad by SorenGilkeyJohnson on GitHub, from 2 repositories. A board’s address here is its repository’s there.

SorenGilkeyJohnson/LowLoRa
A solar powered, batteryless LoRa (expandable) sensor node powered from a supercapacitor charged by a small solar cell using an energy harvester.

SorenGilkeyJohnson/iCEPico
A custom dev board based on the RP2350 microcontroller and the ICE40UP5K-SG48I FPGA.