Arduino Fans

NodeMCU Control 4 Relays from Smartphone using Blynk

Controlling 4 relays using a NodeMCU (ESP8266) via Wi-Fi and the Blynk app is a great way to build an IoT home automation project. Below is a step-by-step guide, including the circuit diagram, Blynk setup, and Arduino code. 🧰 Requirements 📲 Blynk App Setup 💻 Arduino Code First, install the following libraries via Library Manager: […]