Articles about the parts, the boards and the tools behind the builds: what a chip actually changes, why a circuit behaves the way it does, which tool earns its place on the bench. The builds themselves, with their part lists and files, live under Projects.
Ten days, one robot, three control loops. How our ESP32 balancing robot on brushed motors learned to stand, to come back after a push, to hold its spot and to drive over Wi-Fi, with the numbers from its logs and the firmware that made it work.
The original ESP32, S2, S3, C3, C6 and P4 side by side: cores, memory, radios, motor-control peripherals, ADC, USB and sleep currents, checked against Espressif datasheets — and which chip to pick for motors, sensors, USB devices, cameras or Thread.
A 480 × 320 touch screen with a microSD slot that plugs straight into an Arduino Uno. Its ILI9486/ILI9488 controller takes a whole byte per clock, and on an ESP32-S3 that is enough for 25 fps full-screen video. Pinout, programming interface, speed and what to build on it.
An ESP32-S3 board with a 5 MP OV5640 camera, two USB-C ports, microSD, 16 MB of flash and 8 MB of PSRAM. What is wired to what, which of its 36 GPIOs are really free, how to set up Arduino so the camera behaves, and a pin reference to download.
An ESP32 board with a 1.14-inch colour screen already wired to it. What is connected where, which GPIOs are safe to use, how long it lasts on a battery — and where the classic T-Display ends and the S3 begins.
