
XIAO nRF54L15 V1
hmd83/tanen
LoRaWAN beehive monitor: hive weight, temperature and battery over TTN. Seeed XIAO nRF54LM20A + SX1262, Zephyr/nRF Connect SDK. ~4 uA sleep, ~10 year life on 3X AAA cell.
KiCad boards from 5 GitHub repositories tagged “battery-powered”, the most starred first; open any of them in PCBKit.

hmd83/tanen
LoRaWAN beehive monitor: hive weight, temperature and battery over TTN. Seeed XIAO nRF54LM20A + SX1262, Zephyr/nRF Connect SDK. ~4 uA sleep, ~10 year life on 3X AAA cell.

Anvently/portable-bike-perception-rpi-ros2
Battery-powered bicycle acquisition module using camera, dual 360° Lidar, and GNSS with ROS2 on Raspberry Pi to detect overtaking vehicles and measure curb distance.

Matyas604/Pocket-lightning-detector
A lightning detector that runs on a battery and fits in your pocket. It records the distance, energy and current time of a lightning strike, and you can then view this data via Bluetooth in mobile app.


sbarabe/SBK_SP1
Open-source soft power switch module for learning and embedded electronics projects.