The SONOFF DUALR3 is a versatile dual-channel smart switch that can turn two separate electrical loads into Wi-Fi-controlled devices. Instead of using a traditional wall switch alone, you can control your lights from the eWeLink app, create schedules and scenes, and connect the device to Amazon Alexa for voice control. We’re gonna learn how to
Imagine a smart doorbell that works even when your internet goes down. No cloud dependencies, no Wi-Fi outages—just two ESP boards talking directly to each other, instantly. That’s exactly what we’re going to build today using ESP-NOW, Espressif’s incredibly efficient wireless protocol. Here’s what our smart doorbell system will do: Let’s get building! What You’ll
ESP-NOW is a highly versatile and lightweight wireless communication protocol developed by Espressif. Unlike standard Wi-Fi or Bluetooth, it allows multiple ESP32 and ESP8266 devices to exchange data directly without needing a router, internet connection, or complex network pairing. This makes it perfect for IoT projects, sensor networks, home automation, robotics, and battery-powered devices. In
Security systems are becoming an essential part of modern homes and offices. Instead of traditional keys, RFID technology offers a simple and secure way to control access. So let’s build a complete RFID door lock system using Arduino, an RC522 RFID reader, and a solenoid door lock. This system allows access only to authorized RFID
Introduction In this new Project, we will transform an ESP32 into a powerful smart home controller. By the end, you will be able to control 4 appliances (like lights or fans) in two ways: We will use the ESP32’s built-in Wi-Fi to host a local web server. No third-party cloud services are required, which means
Building a password-protected door lock system with Arduino is a great beginner-to-intermediate electronics project. You will learn how to create a secure digital door lock using an Arduino, a 4×4 keypad, an I2C LCD, a buzzer, and a solenoid door lock. The system allows a user to enter a password through the keypad. If the