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Ham Radio Tools Coax Electrical Length Calculator Calculate the physical length of coax needed for a target electrical length. Enter frequency, coax velocity factor, and phase length to find quarter-wave, half-wave, full-wave, or custom cable sections for ham radio feedlines, stubs, and phasing lines. Coax cable with wavelength marks A coax cable path with quarter-wave, … Read more
Ham Radio Tools Coax Loss Calculator Estimate how much transmit power is lost in a coaxial feedline before it reaches the antenna. Enter the operating frequency, coax type, cable length, and transmitter power to calculate line loss, antenna-end power, efficiency, and heat lost in the cable. Transmitter, coax feedline, and antenna A station diagram showing … Read more
Compiling Tasmota Used to Be a Chore?—Not Anymore If you’re into smart home DIY and own Sonoff switches, ESP8266, or ESP32 boards, you already know Tasmota is a superpower of home automation. It turns cheap hardware into fully customizable smart devices, way better than clunky factory firmware. But let’s be honest: customizing Tasmota firmware is … Read more
Ever Tried Making a Web Control Panel for Your ESP Project? It Wasn’t Fun. Let’s be real: you just want to toggle a relay, adjust LED brightness, or view sensor data from your phone or laptop. You don’t want to spend hours wrestling with HTML, CSS, and JavaScript—half the time, the code breaks, the layout … Read more
Disclosure:This article reviews the open-source MPY-Cassette-Player-V4 project by jd3096, a heartfelt tribute to classic cassette Walkmans reimagined with modern microcontroller technology. We aim to share this creative maker project that combines nostalgia and practicality with the global electronics enthusiast community. Overview This article covers the MPY Cassette Player V4, an open-source RP2040-based DIY project designed … Read more
**Disclosure**: This article is a deep-dive review of the open-source JingShi desktop clock project by zhushengji. We believe in supporting the maker community by bringing hidden gems like this beautifully designed ESP32 timepiece to a global audience. Overview This article reviews the open-source JingShi (Quiet Stone) desktop clock, an ESP32-powered project designed by zhushengji. It … Read more
Welcome back to our Electronics Basics series! In the last lesson, we got to know electrons—the tiny, negatively charged particles that make all electronic devices work. Today, based on that foundation, we’ll explore three core concepts: electric charge, static charge, and current. By the end of this article, you’ll understand the key concepts of these … Read more
Welcome to the first entry in our Electronics Basics series! To understand how your phone, computer, or even a simple flashlight works, you must first get to know the “star” of the show: the electron. Without the movement of these tiny particles, electronic technology as we know it simply would not exist. 1. Atomic Structure: … Read more
In Part 1, we built Meshtastic nodes from custom made boards. Now in Part 2, we’ll turn one node into a permanent, always-on CLIENT_BASE station powered by solar, mounted outdoors on my balcony. This base station will act as the backbone of my local Meshtastic network, while the second node will be a portable tracker/handheld … Read more
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