This is a 24VDC to 12VDC / 500mA dual power supply project.

24VDC to 12VDC/500mA dual PSU.

Vulcan Radar is a dedicated ESP32-P4 desktop aircraft tracker built around an Elecrow 5-inch CrowPanel HMI display. It connects over Wi-Fi to a custom cloud API, processes live aircraft data and plots nearby traffic on a radar-style touchscreen interface with physical range control.

Keychain

Wi-Fi HaLow successfully bridges the gap between traditional Wi-Fi and LoRaWAN by combining long range, low power consumption, and enough bandwidth for real-time video streaming. It is a promising technology for the next generation of IoT and smart surveillance systems.

This is a neckband watch that can see the time, see pictures, show Text Moving, show Gif animations. Style cyberpunk

Show your Plex/Emby/Jellyfin "now playing" card on a cheap ESP32 touch panel (ESPHome + a tiny screenshot sidecar)

This project demonstrates that practical object recognition does not always require complex machine learning frameworks. Using only the built-in camera, display, and processing power of the UNIHIKER K10, it is possible to create a simple, fast, and effective object recognition system that can be trained directly by the user.

Pocket Admin Toolkit v2 turns the Elecrow 2.8-inch ESP32 CrowPanel into a compact touchscreen toolkit for Linux, networking, DevOps and everyday system administration. The first version proved that a small ESP32 display could provide fast answers without opening a laptop or searching through online documentation. Version 2 expands the project into eight practical tools: • CIDR and IPv4 subnet calculator • VLSM network planner • World clock and time-zone converter • Cron generator and parser • Storage and backup capacity planner • Visual Linux chmod calculator • Wi-Fi and BLE wireless scanner • HTTP status code and TCP/UDP port reference Most tools work completely offline. No cloud service, backend, account, API key or Wi-Fi password is required. Wi-Fi and BLE remain disabled until the Wireless Scanner is opened, and the toolkit scans nearby signals without connecting to a network. Fast answers, local calculations and useful admin tools — all running directly on a 320 × 240 ESP32 to

This is a DIY project, to balance a ball on a plate, characterized by innovative solutions. The project is fully opens source, and well documented. The project has been featured by: Makerprojectlab [https://www.makerprojectlab.com/patterns-in-the-pixels-maker-update/]. Hackster [https://www.hackster.io/news/this-balance-bot-uses-a-mirror-to-see-the-big-picture-c26c68e3fdbe].

In this project, I convert a classic PCL86 single-ended tube amplifier design to operate with the less common PCL82 vacuum tube. Powered entirely from compact DC-DC converters, this amplifier delivers maximum 2W of warm tube sound with absolutely no audible hum or switching noise.

In this project I demonstrate an extremely simple Direct Conversion SDR Receiver based on the Microchip MCP2036 IC.

I turned an ESP32 Bitcoin miner into a practical Pocket Admin Toolkit. After running for more than 100 days, my original Bitcoin mining experiment became something much more useful: a fully offline touchscreen toolkit for Linux, networking, and system administration. Everything runs directly on the ESP32. No Wi-Fi. No cloud. No accounts. No API keys. Just fast, offline tools that are always available. Features • CIDR & subnet calculator • Visual Linux chmod calculator • HTTP status code reference • Common network ports reference This is only version 1, and I already have ideas for many more features.

Learn how to configure two HC-05 Bluetooth modules as a Master-Slave pair and establish reliable wireless communication between two Arduino Uno boards. In this project, the Master Arduino remotely controls the direction and speed of a 12V DC motor connected to the Slave Arduino.

This Elecrow Starter Kit saves time, eliminates wiring problems, and makes learning electronics both simple and enjoyable.