Meet MicroPythonOS, an Android-inspired operating system built entirely in MicroPython that turns your ESP32 into a touchscreen device with app support, Wi-Fi management, and OTA updates. The tutorial guides you from installation to creating a custom app on a Waveshare ESP32 touchscreen.

By capturing hand motions through a webcam, this setup uses OpenCV and MediaPipe to interpret gestures and wirelessly control a robot’s motors via Arduino Nanos and an nRF24L01 radio link, with an L298N driver handling the motor actions. The project’s open-source code focuses on simplicity and affordability for easy DIY builds.

Optocouplers often fail silently, but this easy-to-build tester lets you verify their internal LED and photosensitive output in seconds without complex tools or setups.

LightInk is an ESP32-based solar watch with a 1.54-inch e-paper display, Wi-Fi, Bluetooth, LoRa, and GPS. It runs on a tiny 100mAh battery, using smart power management and solar energy to last up to 10 months without charging.

You’ll create a rotating ultrasonic radar using Arduino UNO Q, a servo, and an HC-SR04 sensor that scans distances and sends data to a Linux host, where Python and a web interface draw a live sonar animation in your browser.

An ESP32 Lite board scans for nearby Bluetooth devices and lights an LED when a registered device is detected, letting you press a button to unlock a door when you’re close enough.

This RP2354B-based board from Clintech keeps the Raspberry Pi Pico’s compact form while exposing all 48 GPIO pins directly on the PCB, letting you tap into the chip’s dual-core Arm and RISC-V power with no GPIO compromises.

This guide shows how to connect Elecrow’s CrowPanel e-paper screens to ESPHome via a custom driver that works with LVGL, letting you do partial refreshes, set full-refresh intervals, and trigger full updates manually, plus it includes a minimal example and a weather dashboard using OpenWeatherMap.

Using a Waveshare e-paper screen and a Pi Zero 2, the PiPaper Frame offers a calm, paper-like view of your daily info that blends into your space without glowing or buzzing.

This project walks through making a mechanical keyboard using Raspberry Pi Pico, including schematic design, PCB creation, QMK firmware development, and assembling the final product.

Using an ESP32 and a capacitive moisture sensor, this setup waters indoor plants only when needed, thanks to a relay controlling a 12V pump. The system runs off a 12V battery stepped down to 5V, with deep sleep saving energy for unattended use.

This guide shows how to create a wireless two-way communication link using Arduino paired with powerful 433MHz SX1278 LoRa transceivers.