hobby electronics

MPY Cassette Player V4: A Retro Cassette Player Reborn with RP2040 & MicroPython

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MPY Cassette Player V4: A Retro Cassette Player Reborn with RP2040 & MicroPython

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

JingShi Desktop Clock: A Stylish ESP32-Powered Timepiece with Smart Features for Makers

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JingShi Desktop Clock: Stylish ESP32-powered smart timepiece with OLED display, featuring article title overlay "A Stylish ESP32-Powered Timepiece with Smart Features for Makers"

**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

Lora Meshtastic Nodes Built from Scratch Part 2

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a solar meshtastic CLIENT_BASE Station deployed on balcony rail

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

A 260W Multi-Port Desktop Quick-Charge Unit

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desktop charger 260w two type-c ports

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

An Open Source MPPT Controller for Ham Radio Field Operation – Build Notes

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esp32 mppt controller in work closed-up view

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