How to Use Arduino 101: Examples, Pinouts, and Specs

The Arduino 101 is a microcontroller board based on the Intel Curie module. It combines the simplicity of Arduino with advanced features such as built-in Bluetooth Low Energy (BLE) capabilities and a 6-axis accelerometer/gyroscope. This board is ideal for projects requiring wireless communication, motion sensing, and real-time control. Its versatility makes it suitable for applications in IoT, wearable devices, robotics, and educational projects.

• IoT (Internet of Things) devices
• Wearable technology
• Motion tracking and gesture recognition
• Robotics and automation
• Educational tools for learning embedded systems and programming

1. Powering the Board:

   • Connect the Arduino 101 to your computer via the Micro USB cable for programming and power.
   • Alternatively, use an external power supply (7-12V) connected to the VIN pin or the DC power jack.

2. Programming the Board:

   • Install the Arduino IDE on your computer.
   • Add the Intel Curie Boards package via the Arduino Boards Manager.
   • Select "Arduino/Genuino 101" from the Tools > Board menu.
   • Write your code and upload it to the board using the USB connection.

3. Using Bluetooth:

   • The Arduino 101 features built-in BLE. Use the CurieBLE library to create BLE peripherals or central devices.
   • Pair the board with a smartphone or other BLE-enabled device for wireless communication.

4. Using the Accelerometer/Gyroscope:

   • Use the CurieIMU library to access the 6-axis accelerometer/gyroscope.
   • This can be used for motion sensing, gesture recognition, or orientation tracking.

#include <CurieIMU.h> // Include the CurieIMU library

void setup() {
  Serial.begin(9600); // Initialize serial communication
  while (!Serial);    // Wait for the serial port to open

  // Initialize the IMU
  if (!CurieIMU.begin()) {
    Serial.println("Failed to initialize IMU!");
    while (1); // Halt the program if initialization fails
  }

  Serial.println("IMU initialized successfully!");

  // Set accelerometer range to ±2g
  CurieIMU.setAccelerometerRange(2);
}

void loop() {
  int ax, ay, az;

  // Read accelerometer data
  CurieIMU.readAccelerometer(ax, ay, az);

  // Print the accelerometer values
  Serial.print("Accelerometer: ");
  Serial.print("X = "); Serial.print(ax);
  Serial.print(", Y = "); Serial.print(ay);
  Serial.print(", Z = "); Serial.println(az);

  delay(500); // Wait 500ms before the next reading
}

• Voltage Levels: The Arduino 101 operates at 3.3V logic levels. Ensure that any external components connected to the I/O pins are compatible with 3.3V.
• Power Supply: Avoid exceeding the recommended input voltage range (7-12V) to prevent damage to the board.
• BLE Range: The effective range of the BLE module depends on environmental factors. Ensure minimal interference for optimal performance.
• Library Compatibility: Use libraries specifically designed for the Intel Curie module, such as CurieBLE and CurieIMU.

1. Problem: The board is not recognized by the Arduino IDE.
   Solution:

   • Ensure the correct drivers are installed.
   • Check that the Intel Curie Boards package is installed in the Boards Manager.
   • Try a different USB cable or port.

2. Problem: BLE connection is unstable or not working.
   Solution:

   • Verify that the BLE device is within range.
   • Ensure the CurieBLE library is used correctly in your code.
   • Restart the board and the BLE device to reset the connection.

3. Problem: The accelerometer/gyroscope is not providing data.
   Solution:

   • Confirm that the CurieIMU library is included and initialized in your code.
   • Check the wiring and connections if using external sensors.
   • Ensure the board is not physically damaged.

4. Problem: The board overheats during operation.
   Solution:

   • Verify that the input voltage does not exceed the recommended range.
   • Avoid drawing excessive current from the I/O pins.

• Can I use the Arduino 101 with a 5V sensor?
  Yes, but you will need a level shifter to convert the 5V signals to 3.3V.

• Is the Arduino 101 compatible with standard Arduino shields?
  Yes, as long as the shields are compatible with 3.3V logic levels.

• Can I use the Arduino 101 for battery-powered projects?
  Yes, you can power the board using a battery connected to the VIN pin or the DC power jack.

• What is the maximum BLE range of the Arduino 101?
  The BLE range is typically around 10-30 meters, depending on environmental conditions.

This concludes the documentation for the Arduino 101. Happy building!