Low Power

Everything tagged “Low Power” across notes, resources, and Mochi logs.

Realistic nRF52840-style BLE wearable prototype on an electronics workbench

NotesFirmwareSeptember 6, 2026

nRF52840 BLE Wearables: How to Build a Wearable Device

A practical guide to building nRF52840 BLE wearables with open-source references, Zephyr, compact GATT design, sleep/wake states, and real power measurements.

nRF52840 BLE Wearables Zephyr RTOS Low Power Embedded Systems

A weatherproof LoRaWAN environmental sensor installed beside a vegetable field

IoT SolutionsIoT SolutionsAugust 21, 2026

LoRaWAN: Long-Range Sensor Networks

How I build a small LoRaWAN network for battery sensors, from nodes and gateways to ChirpStack, compact payloads, antenna placement, and field testing.

IoT Solutions LoRaWAN LoRa Long Range Sensors ChirpStack Low Power MQTT