Introduction Knowing which room someone is in unlocks powerful home automation possibilities: lights that follow you through the house, heating that adjusts per-room occupancy, and …

Managing Type 1 diabetes requires continuous glucose monitoring (CGM) data that is accessible, private, and always available. While commercial platforms like Dexcom Clarity and …

Introduction Digital voice has transformed land mobile radio. Public safety agencies, transit systems, utilities, and amateur radio operators have migrated from analog FM to …

Introduction E-ink displays offer something no LCD or OLED screen can match: a paper-like reading experience that uses zero power when static and remains perfectly readable in …

Introduction Every IoT device, router, and embedded system ships with firmware — a binary blob that contains the operating system, applications, and configuration of the device. …

Introduction Every amateur radio operator knows that logging contacts (QSOs) is not just good practice — it’s essential for earning awards, tracking propagation, and …

Introduction We spend approximately 90% of our time indoors, yet most people have no idea what’s in the air they’re breathing. Elevated CO2 levels — common in modern, …

Introduction Temperature control is one of the oldest and most important industrial processes — and it’s also one of the most accessible for makers and hobbyists to automate. …

Why Build a Self-Hosted LoRa Mesh Network? When cellular networks go down — whether due to natural disasters, remote locations, or infrastructure failures — traditional …

Introduction Nostr (Notes and Other Stuff Transmitted by Relays) is a radically simple, decentralized protocol for social networking. Unlike federated platforms like Mastodon that …

Introduction For decades, the engine control unit (ECU) was a black box — a proprietary computer sealed inside your vehicle that you could neither modify nor understand. The open …

Introduction Pager networks — once the backbone of emergency communications and hospital messaging — are still actively broadcasting across the world. Using POCSAG (Post Office …