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.

Arduino HC-06 Bluetooth Control A simple app built with Flutter to control an Arduino via Bluetooth using the HC-06 Bluetooth module.

In this DIY session we are building a circuit to program the Arduino wirelessly using Bluetooth module HC-05. Here we are using an HC05 Bluetooth module to do this.

This project demonstrates the complete construction of Arduino LCD using Bluetooth Module. Source code Included within the article.

I connected the Bluetooth module’s rx to 11, tx to 10 and gn to gnd and vcc to 5v. The en pin was also HIGH (applying 3.3V) Then I powered up the arduino and also the Bluetooth module.

In Connecting to Intel® Edison from Android* with Bluetooth* LE (BLE) describes a way to access BT via Arduino code but additional BT shield/kit is required.

Arduino introduced the Arduino Nano RP2040 Connect, a small Raspberry Pi RP2040-based microcontroller board with Wi-Fi and Bluetooth.

DX-BT27-A Bluetooth Module Long Range Up to 420m BLE Support Scanning QR Code to Connect Wireless Bluetooth TF Transceiver Module for Arduino Compatible with Android iOS ...