How to Use Adafruit ADXL343 + ADT7410 Sensor FeatherWing: Examples, Pinouts, and Specs

The Adafruit ADXL343 + ADT7410 Sensor FeatherWing (Manufacturer Part ID: 4147) is a versatile sensor board that integrates two powerful sensors: the ADXL343 accelerometer for motion sensing and the ADT7410 temperature sensor for precise temperature measurements. Designed to seamlessly integrate with Adafruit's Feather microcontroller platform, this FeatherWing is ideal for applications requiring both motion and environmental data.

• Wearable devices for motion and temperature tracking
• Environmental monitoring systems
• Robotics and drone navigation
• IoT projects requiring motion and temperature sensing
• Data logging and scientific experiments

The FeatherWing uses the Feather's standard I2C pins for communication. Below is the pin configuration:

1. Connect the FeatherWing to a Feather Board:

   • Align the FeatherWing with the Feather microcontroller and solder the headers for a secure connection.
   • Ensure the Feather board is powered via USB or a battery.

2. I2C Address Configuration:

   • The ADXL343 uses the default I2C address 0x53.
   • The ADT7410 uses the default I2C address 0x48.

3. Install Required Libraries:

   • Install the Adafruit_ADXL343 and Adafruit_ADT7410 libraries from the Arduino Library Manager.

4. Write Code to Read Sensor Data:

   • Use the provided libraries to initialize the sensors and read data.

• Power Supply: Ensure the FeatherWing is powered with 3.3V. Supplying higher voltages may damage the board.
• I2C Bus: Both sensors share the same I2C bus. Avoid address conflicts if additional I2C devices are connected.
• Interrupt Pins: Use the interrupt pins (INT1, INT2) for advanced motion detection features of the ADXL343.
• Temperature Accuracy: For optimal temperature readings, avoid placing the FeatherWing near heat sources.

#include <Wire.h>
#include <Adafruit_ADXL343.h>
#include <Adafruit_ADT7410.h>

// Create sensor objects
Adafruit_ADXL343 accel = Adafruit_ADXL343(12345); // Pass an arbitrary ID
Adafruit_ADT7410 tempSensor = Adafruit_ADT7410();

void setup() {
  Serial.begin(115200);
  while (!Serial) delay(10); // Wait for Serial Monitor to open

  // Initialize ADXL343 accelerometer
  if (!accel.begin()) {
    Serial.println("Failed to find ADXL343! Check wiring.");
    while (1);
  }
  Serial.println("ADXL343 initialized.");

  // Initialize ADT7410 temperature sensor
  if (!tempSensor.begin()) {
    Serial.println("Failed to find ADT7410! Check wiring.");
    while (1);
  }
  Serial.println("ADT7410 initialized.");
}

void loop() {
  // Read accelerometer data
  sensors_event_t event;
  accel.getEvent(&event);
  Serial.print("Accel X: "); Serial.print(event.acceleration.x); Serial.print(" m/s^2, ");
  Serial.print("Y: "); Serial.print(event.acceleration.y); Serial.print(" m/s^2, ");
  Serial.print("Z: "); Serial.println(event.acceleration.z); Serial.println(" m/s^2");

  // Read temperature data
  float temperature = tempSensor.readTempC();
  Serial.print("Temperature: "); Serial.print(temperature); Serial.println(" °C");

  delay(1000); // Wait 1 second before next reading
}

1. Sensors Not Detected:

   • Ensure the FeatherWing is securely connected to the Feather board.
   • Verify the I2C connections (SCL and SDA).
   • Check for address conflicts if other I2C devices are connected.

2. Incorrect Temperature Readings:

   • Avoid placing the FeatherWing near heat sources or in direct sunlight.
   • Ensure the ADT7410 is not exposed to rapid temperature changes.

3. No Motion Data from ADXL343:

   • Verify that the ADXL343 is initialized correctly in the code.
   • Check the interrupt pins (INT1, INT2) if using motion detection features.

4. Library Installation Errors:

   • Ensure the Adafruit_ADXL343 and Adafruit_ADT7410 libraries are installed via the Arduino Library Manager.
   • Update the libraries to the latest version if issues persist.

Q: Can I use this FeatherWing with non-Adafruit Feather boards?
A: Yes, as long as the board supports 3.3V logic and has I2C pins, it should work. However, ensure compatibility with the FeatherWing's pin layout.

Q: Can I use SPI instead of I2C for the ADXL343?
A: The ADXL343 supports SPI, but this FeatherWing is configured for I2C communication only.

Q: What is the maximum sampling rate for the ADXL343?
A: The ADXL343 supports a maximum output data rate of 3200 Hz.

Q: How accurate is the ADT7410 temperature sensor?
A: The ADT7410 provides an accuracy of ±0.5°C across the -40°C to +125°C range.

By following this documentation, you can effectively integrate the Adafruit ADXL343 + ADT7410 Sensor FeatherWing into your projects for reliable motion and temperature sensing.