Learn how to use Bluetooth with Arduino, how to connect HC-05 Bluetooth module to Arduino, how to connect smartphone to Arduino via Bluetooth, how to exchange data between Arduino and smartphone, how to control Arduino from smartphone, how to control Arduino via Bluetooth

Sep 4, 2024 · Central devices take on the role of initiating connections to peripheral devices. For example, your smartphone is often a central device when connecting to Bluetooth® LE peripherals like fitness trackers, smart sensors or an Arduino board.

How to Set Up and Test Arduino Bluetooth Connection: This works with android phones and the HC-05 and HC-06 bluetooth modules, as well as pretty much any arduino or arduino clone.

Jul 3, 2021 · Establish a BT connection, send command to turn LED on and off and check the status of the LED.

In order not to overload this tutorial, in my next tutorial we will learn how we can configure the HC-05 Bluetooth module and make a Bluetooth communication between two separate Arduino Boards as master and slave devices.

Bluetooth can be added to any Arduino using either a shield or by connecting a Bluetooth transceiver with a serial connection. It typically costs between $10 and $20 to add Bluetooth to an Arduino depending on if a shield is used (more expensive) or if …

The Reyax BLE Connect app (modified for this demo) handles the Bluetooth communication with the RYB2340 module. When I open the app, it scans for nearby Bluetooth devices and shows the RYB2340 in the list. Tapping it establishes a connection. I customized the app's interface by adding two simple buttons—"Relay On" and "Relay Off"—that send the corresponding text commands to the module when ...

In this step-by-step tutorial, we’re going to show you how to wirelessly program your Arduino using Bluetooth. It gives you more flexibility when working on your projects.

Apr 29, 2025 · Connect Arduino's TX pin (pin 3) to the 1kΩ resistor's end. The junction between resistors goes to HC-05's RX pin. The 2kΩ resistor's other end connects to ground. This setup safely reduces Arduino's 5V signal to about 3.3V. ... Serial Monitor helps you debug and verify that your Bluetooth connection works correctly.

May 7, 2020 · In this Arduino bluetooth tutorial we will connect two HC-05 bluetooth modules together using Arduino, and make them communicate using master slave configuration.