Reference builds
Wired, measured, written down.
Each build is a parts list, a wiring card, a sketch you can flash and the numbers we got. Copy one and change what you need.
Feather 1S LiFePO4
Solar LoRa node
A Meshtastic-class LoRa node on a Snowbird Feather 1S with a 2000 mAh LiFePO4 cell and a 6 V panel, outdoors through a Kelowna winter.
18650 LiFePO4
LiFePO4 Home Assistant sensor
An indoor temperature and humidity node on an ESP32 Feather, one 18650 LiFePO4 cell, months per charge, discovered by Home Assistant with no integration work.
Core 1S LiSOCl2
LiSOCl2 ten-year sensor
A water-meter pulse counter on a Snowbird Core 1S soldered to its carrier, running a decade on one ER14505 bobbin cell in primary mode.