Arduino project for receiving and (in the future) transmitting signals using a 433 MHz RF module. Currently, this repository contains code for a 433 MHz signal receiver, which allows reading signals ...

For Hackaday readers who don’t spend their free time underwater, nitrox is a blend of nitrogen and oxygen that’s popular with scuba divers. Compared to atmospheric air, nitrox has a higher ...

This project provides a simple and practical solution using an Interactive Voice Response System (IVRS) that works completely ...

ESP32 Pin → Component ===== GPIO 4 → DHT22 Data Pin GPIO 27 → Relay IN (Pump) GPIO 2 → LED Status (built-in) 3.3V → DHT22 VCC GND → DHT22 GND, Relay GND 5V → Relay VCC Note: Capacitive soil sensor ...