This article provides a guide on building a DIY high-end Bluetooth speaker in only 30 minutes using an ESP32 and simple hobbyist components. Using a LILYGO T-Display board, which supports the Bluetooth Classic protocol required for A2DP audio streaming, the project pairs with a MAX98357A module to act as a digital-to-analog converter and amplifier. The setup uses the I2S interface for audio transmission and can even display track information and connection status on the onboard TFT screen. It is an excellent, quick project for electronics enthusiasts looking to repurpose spare parts into a functional, polished audio device.
Koffan is a self-hosted grocery list application designed for simplicity and real-time updates, ideal for families. It's lightweight enough to run on a Raspberry Pi Zero W, offering a private and efficient alternative to subscription-based grocery list apps.
A 6502 based laptop design. Specs include a 65C02 running at 8MHz, 46K RAM, BASIC in ROM, 65C22 VIA, 9" display, built-in keyboard, Compact Flash storage, 10000mAh battery, USB-C powered/charged, serial console, and an internal expansion slot. The project details the build process, current status, memory map, and custom BASIC commands.
This article details a $30 ESP32-based room mapper built with a Time-of-Flight sensor and IMU. It features 64-zone 3D visualization, real-time orientation tracking, temporal filtering, plane fitting, and a mapping mode. The project is breadboard-based and doesn't require soldering, but relies on an IMU for heading, which can cause inaccuracies if the device is moved.
This project details adding a wireless Adafruit Feather ESP32 with OLED display to interface with the MightyOhm Geiger Kit, including features like data logging to Radmon.org, web server diagnostics, and various display modes. It covers assembly, software setup, testing, and additional connections to a Raspberry Pi.
This article details how to build a portable AI chatbot using a Raspberry Pi Zero 2 W, a Whisplay HAT, and a PiSugar battery for under $100. It offers a cheaper alternative to devices like the Rabbit R1 and allows for customization of the AI client used.
MySat is a fully functional small satellite (CubeSat) STEM kit for space fans. It allows users to build, program, and operate a real satellite system on the ground, providing hands-on experience with space technology.
The Tuitar is a DIY project using an ESP32 to help learn guitar, featuring tuning assistance, a virtual fretboard, and game modes for practice.
Weather Station designed for the Lilygo T5 4.7 inch Epaper Development Platform. Allows for user-friendly configuration of weather display settings via a web interface.
This article details 7 ESPHome projects that enhance smart home functionality, including washing machine state detection, water leak detection, presence detection, Bluetooth proxy, custom smart speakers, cheap yellow displays, and ePaper dashboards.
