NRF51822-02 Nordic BLE4.0 Low-Power Bluetooth Data Passthrough Shield

Description

What it is

The NRF51822-02 Nordic BLE4.0 is a low-power Bluetooth module designed for use with Arduino and other microcontrollers. This module allows for efficient wireless data transmission, ideal for IoT applications that require wireless connections.

Features

• Low-power Bluetooth module Nordic BLE4.0
• Bluetooth LE data passthrough

What it is for

NRF51822-02 modules are useful for projects that require wireless connections, such as creating small weather stations that send temperature and humidity data to a mobile app. Compatible with Arduino.

Tutorial: How to use NRF51822-02 – Bluetooth BLE4.0 module

The NRF51822-02 module allows for low-power wireless data transmission, ideal for projects that require Bluetooth LE connections on Arduino.

What you need

• Arduino Uno or compatible
• USB A-Micro B cable
• Arduino IDE software installed

Steps

1. Connect the NRF51822-02 module to the VCC, GND, and TX/RX pins of the Arduino.
2. Install the BLESerial library via the Arduino IDE Library Manager.
3. Write a sketch that initializes the module and sends data via Bluetooth LE.
4. Upload the sketch to the Arduino and verify the connection with a mobile device or computer.
5. Use the BLE Scanner app to locate the NRF51822-02 module and establish a connection.
6. Test data transmission by sending messages from the device to the module and vice versa.

Example code

void setup() { 
  Serial.begin(9600);
  BLESerial.begin();
}

void loop() {
  if (BLESerial.available()) {
    String received = BLESerial.readStringUntil('n');
    Serial.println(received);
  }
}

Mini project

Create a small weather station that sends temperature and humidity data to a mobile app using the NRF51822-02 module.

Common mistakes

• Error in installing the BLESerial library.
• Issues with configuring the TX/RX pin settings.
• Difficulty in finding the module with the Bluetooth LE scanner app.
• Unstable connection between Arduino and mobile device.

Recommended accessories

• DHT11 Module for temperature and humidity reading
• LiPo 3.7V Battery for low power operation
• USB Bluetooth Antenna to improve connection range
• RGB LED controllable via mobile app

Frequently asked questions

How can I check if the BLESerial library is installed correctly?
Make sure there are no errors during installation and try to upload a sample sketch provided by the library.

What are the minimum hardware requirements for using this module?
Arduino Uno or compatible, USB power supply or 3.7V LiPo battery.