Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

Simple Arduino-based Digital Safe Lock . ... Arduino (any compatible board), 4x4 Keypad, 16x2 LCD Display (I2C), Jumper Wires, Breadboard (optional), #Circuit Diagram Keypad Connections: 1.Row 1 (R1): ...

30+ Arduino Project Ideas for Beginners with Code and Circuit Diagram. Published ... there's something here to spark your creativity and help you learn the Arduino environment. From simple motion ...