Voice-controlled robot interface using CrowPanel Advance and OpenAI. Spoken commands are interpreted via API and sent over Bluetooth to a robot. Works with CrowBot and can be adapted for other devices.

The future of air transport

Introducing our Advanced 8-Channel RC Transmitter and Receiver System a pinnacle of innovation for RC enthusiasts. Powered by STM32F103C8T6.

Most people are unaware of Cosmic Rays, yet they exist everywhere, unseen or felt. They were created long ago when primary particles get accelerated to near the speed of light by the tremendous magnetic shockwaves when stars supernova, black holes eat, and binary stars merge. The very same processes that thrust heavy elements made inside stars and other extreme events to form interstellar dust, asteroids, planets, and the building blocks for life. Cosmic Rays are an ongoing and continuous reminder of the immense scale, age, and complexity of the universe and the importance of science to our understanding. Building a Cosmic Ray Muon Detector allows anyone to collect data and visualise or make music from Cosmic Ray showers here on Earth. It is an opportunity to share an appreciation of Cosmic Rays: how tiny our little blue planet is, where it exists within the vastness of the universe, a precious, rare and fragile place, something worth protecting.

Identify noxious air bubbles lurking in the substrate w/ ultrasonic scans and assess water pollution based on chemical tests simultaneously.

A replacement PCB for Hori Pad Mini controllers supporting software calibration & Hall Effect sensors.

Automatische Bewässerungssteuerung für bis zu 4 Pflanzen mit ESP8266 und Home Assistant Integration. ✅ 4x Kapazitive Bodenfeuchte-Sensoren (korrosionsbeständig) ✅ 4x Pumpen mit individueller Steuerung ✅ Wassertank-Füllstandsüberwachung mit Schwimmer ✅ 2x Hardware-Buttons für Standalone-Betrieb Betriebsmodi: • AUTO: Kontinuierliche Überwachung, automatisches Bewässern bei Bedarf • MANUELL: Pumpensteuerung über Schalter • NOTAUS: Automatisch bei leerem Tank Sicherheit: • Interlock - nur 1 Pumpe gleichzeitig aktiv • Timeout-Schutz gegen Überflutung • Keine Pumpenaktivierung ohne Wasser Alle Parameter über Home Assistant einstellbar (Schwellenwerte, Bewässerungsdauer, Intervalle). Komplette Logik läuft auf dem ESP - keine HA-Automationen erforderlich. Hardware: ESP-01, MCP23017, ADS1115, MOSFETs PCB: 2-Layer, 97x76mm, komplett Open Source

A Short PCB tutorial so you can make your first PCB.

This project demonstrates a simple yet highly effective SDR (Software Defined Radio) receiver based on a dual-conversion superheterodyne architecture using two NE612 mixer ICs.

The DIY Heating Booster helps you get more out of your existing radiator – without modifying your heating system. An ESP32 controls 12V fans mounted underneath the radiator, automatically turning them on when the radiator gets warm to efficiently distribute heat throughout the room. The control logic works standalone with a local temperature sensor, but can also be fully integrated into Home Assistant. Perfect for cold spots, smart upgrades, and energy-saving DIY solutions.

A ready-to-use weather station. Quick setup: flash the prebuilt firmware and start testing in under a minute, no coding required. Open-source and customizable for your own weather-based projects. Firmware and source code available on GitHub.