blog articles on hobby electronics
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
Nowadays, we use more and more electronic devices in daily life and work—like smartphones, tablets, laptops and smart wearables. Our need for quick charging is growing fast. Some people may always feel they don’t have enough charging ports on the desktop. To fix this issue, here comes a project, which is an open-source DIY desktop … Read more
Background: For amateur radio operators engaging in Portable Operations in the Parks (POTA) and Summits on the Air (SOTA), reliable, efficient power is the backbone of successful activations. These activities often take place in remote, off-grid locations where solar power becomes a vital energy source. An MPPT (Maximum Power Point Tracking) controller is not just … Read more
Introduction to FreeRTOS and the ESP32 FreeRTOS is a prominent open-source real-time operating system (RTOS) specifically designed for microcontrollers and small embedded systems. Its popularity arises from its lightweight nature and efficient multitasking capabilities, making it an ideal choice for developers and hobbyists engaged in electronics projects. FreeRTOS provides a framework that allows developers to … Read more
Introduction to ESP32 and Its Features The ESP32 microcontroller has emerged as a favored choice for Internet of Things (IoT) projects, owing to its robust features and versatility. Developed by Espressif Systems, the ESP32 builds upon the foundations laid by its predecessor, the ESP8266, by integrating a dual-core processor, offering enhanced performance and efficiency. This … Read more