HC-08 Bluetooth BLE 4.0 Module DIP 4 Pin Serial Master-Slave Arduino Android iOS

Description

What it is

The HC-08 module is a Bluetooth BLE 4.0 device that allows serial master-slave connectivity between electronic devices such as Arduino and mobile devices like Android or iOS smartphones and tablets.

Features

• Bluetooth BLE 4.0 Module
• 4-pin DIP connector
• Compatible with Arduino and other microcontrollers
• Serial master-slave connection

What it is for

Ideal for projects requiring communication between an Arduino device and a phone or tablet. Can be used by beginners and intermediates to remotely control devices, for example turning LEDs on and off.

Tutorial: How to use HC-08

The HC-08 module allows you to connect your Arduino project to Bluetooth devices, facilitating remote control and communication. Useful for beginners and intermediates.

What you need

• Arduino or compatible
• Power supply cable
• FTDI cable
• Bluetooth device (smartphone, tablet)

Steps

1. 1. Connect the HC-08 module to your Arduino using the RX/TX and GND/VCC pins.
2. 2. Check the datasheet for power supply specifications.
3. 3. Set the baud rate to 9600 in your Arduino code.
4. 4. Load the example code to send Bluetooth messages.
5. 5. Configure your smartphone to connect to the HC-08 module.
6. 6. Check the connection through the serial monitor.
7. 7. Try sending messages from your smartphone to the Arduino.
8. 8. Verify the stability of the connection.

Example code

```
#include <SoftwareSerial.h>

SoftwareSerial bluetooth(2, 3); // RX, TX

void setup() {
  bluetooth.begin(9600);
}

void loop() {
  if (bluetooth.available()) {
    Serial.write(bluetooth.read());
  }
}
```

Mini project

Create a small remote control device to control an Arduino LED using your smartphone to turn the LED on/off.

Common mistakes

• Incorrect power supply: check the datasheet.
• Incorrect baud rate setting: set it to 9600.
• Incorrect connections: check the RX/TX pins.
• Failed Bluetooth connection: verify your device configuration.

Recommended accessories

• Arduino Uno
• FTDI cable
• LED
• 220Ω resistor

Frequently asked questions

How to set up Bluetooth connection?
Configure your Bluetooth device to connect to the MAC code of the HC-08.

Can I use a different power supply than the one indicated in the datasheet?
Check the power specifications in the datasheet and use a compatible power source.

Does the module work with Arduino Nano?
Yes, the module is compatible with Arduino Nano and other compatible microcontrollers.