Building a Battery Meter for Field Radio Operation

Feature image with the title "Building a Battery Meter for Field Radio Operation" over a realistic workbench scene showing a yellow battery meter and a 4S LiFePO4 battery pack.

When doing the field radio operation, the battery is always one of the things I care about most. For a small QRP station, the power problem is usually not very difficult. The current is low, and a modest battery could last for a long time. But I do not always run QRP. Sometimes I want … Read more

Lora Meshtastic Nodes Built from Scratch Part 1

meshtastic node esp32 custom board feature image

This article details how to build a fully custom Meshtastic LoRa mesh node from zero. It covers open‑source PCB design, component assembly, firmware compilation, 3D printed enclosure, and final configuration for off‑grid, long‑range communication. Overview Meshtastic is an open-source communication protocol that transforms affordable LoRa (Long Range) radio modules, typically powered by “ESP32” or “nRF52” … Read more