Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — ...

Arduino Setup Connect the sensors and Bluetooth module to the Arduino as per the wiring guide. Upload the Arduino Code: Open the provided Arduino sketch (arduino_code.ino) in the Arduino IDE. Replace ...

Working principle of Arduino-Bluetooth Module In this project, there are four main components used: Android smartphone Bluetooth application, Bluetooth transceiver, Arduino device, and 1 Channel Relay ...

The Arduino, Bluetooth module (check your specs, some HC-05, and HC-06 may come on a breakout board expecting 5V), and USB Host shield all run off of 3.3V, but devices you want to plug into the ...

SparkFun has just launched the “IoT RedBoard – RP2350” and “IoT RedBoard – ESP32” boards with Arduino UNO R4 form factor based on respectively Raspberry Pi RP2350B + RM2 wireless module and ...