A Button That Sends Command+Shift+3
My iPad lives on a stand most of the day. Videos, presentations, docs, whatever the work needs. That is fine until I want a capture of whatever is o…
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Building a 512-LED wall that dances to my music: FFT, ESP32, and a custom serial protocol
Context A while ago I decided my wall needed to react to music. The build is 512 WS2812B LEDs — eight 8×8 panels arranged as a 32×16 grid — driven b…
How to Build Your First ESP32 IoT Project Using MQTT
If you are learning IoT (Internet of Things) , building an ESP32 project is one of the easiest ways to understand how sensors, microcontrollers, int…
Building a $12 Multi-Robot Swarm: ESP32 BLE Mesh for STEAM Education in Emerging Markets
Building a $12 Multi-Robot Swarm: ESP32 BLE Mesh for STEAM Education in Emerging Markets What if a classroom of 30 kids could each control a robot i…
LighthouseReckoning: A Lightweight LoRa Mesh Network for Arduino, ESP32 and RP2040
LighthouseReckoning LighthouseReckoning is a lightweight LoRa mesh networking library for Arduino-compatible microcontrollers, currently tested on E…
From Arduino To Automotive: How I Escaped The IDE And Owned The Bus
Arduino taught me how to build. Bare metal taught me how the build actually works. I have a lot of respect for Arduino. I mean that sincerely. It is…
Embedded Rust Books for Beginners (Free and Open Source)
If you're looking for Embedded Rust books or want to learn Embedded Rust , I've put together a collection of free and open source books aimed at beg…
ESP32 OLED Mini Shooter Game: Full Beginner Tutorial
Want to turn a small ESP32 board into a mini arcade game you can actually play? This ESP32 OLED Mini Shooter Game uses a 128x64 OLED display and two…
ESP32 Into a Speech-to-Text Device
Typing commands into a serial monitor feels old once you start playing with voice interfaces. So I decided to try something more interesting — build…
The ESP32 Has Quietly Become One of the Most Interesting Hacker Devices Alive
Rainwater was dripping through a hole in the gas station awning onto a plastic patio chair that nobody ever sat in. Beside the propane exchange cage…