Remarks
| ADXL335 | |
|---|---|
| Status |  |
| Source code | GitHub |
| NuGet package |  |
The ADXL335 is a low power accelerometer capable of measuring +/- 3g of acceleration along three axes. The ADXL335 is controlled via I2C.
Code Sample
public class MeadowApp : App<F7Micro, MeadowApp>
{
Adxl335 sensor;
public MeadowApp()
{
sensor = new Adxl335(Device, Device.Pins.A01, Device.Pins.A02, Device.Pins.A03, 500);
sensor.AccelerationChanged += Sensor_AccelerationChanged;
}
private void Sensor_AccelerationChanged(object sender, Meadow.Foundation.Sensors.SensorVectorEventArgs e)
{
Console.WriteLine($"X: {e.CurrentValue.X}, Y: {e.CurrentValue.Y}, Z: {e.CurrentValue.Z}");
}
}
Sample projects available on GitHub
Purchasing
The ADXL335 sensor can be purchased on a breakout board from the following suppliers:
Wiring Example
| Characteristic | Locus |
|---|---|
| Inheritance | System.Object > Adxl335 |
| Implements | IAccelerometer |
| Namespace | Meadow.Foundation.Sensors.Motion |
| Assembly | Adxl335.dll |
Syntax
public class Adxl335 : FilterableChangeObservableBase<AccelerationConditionChangeResult, AccelerationConditions>, IAccelerometerConstructors
Adxl335(IIODevice, IPin, IPin, IPin)
Create a new ADXL335 sensor object.
Declaration
public Adxl335(IIODevice device, IPin xPin, IPin yPin, IPin zPin)Parameters
| Type | Name | Description |
|---|---|---|
| IIODevice | device | |
| IPin | xPin | Analog pin connected to the X axis output from the ADXL335 sensor. |
| IPin | yPin | Analog pin connected to the Y axis output from the ADXL335 sensor. |
| IPin | zPin | Analog pin connected to the Z axis output from the ADXL335 sensor. |
Fields
MinimumPollingPeriod
Minimum value that can be used for the update interval when the sensor is being configured to generate interrupts.
Declaration
public const ushort MinimumPollingPeriod = 100Field Value
| Type | Description |
|---|---|
| System.UInt16 |
Properties
Conditions
Declaration
public AccelerationConditions Conditions { get; protected set; }Property Value
| Type | Description |
|---|---|
| AccelerationConditions |
IsSampling
Gets a value indicating whether the analog input port is currently sampling the ADC. Call StartSampling() to spin up the sampling process.
Declaration
public bool IsSampling { get; protected set; }Property Value
| Type | Description |
|---|---|
| System.Boolean |
|
SupplyVoltage
Power supply voltage applied to the sensor. This will be set (in the constructor) to 3.3V by default.
Declaration
public float SupplyVoltage { get; set; }Property Value
| Type | Description |
|---|---|
| System.Single |
XAcceleration
Acceleration along the X-axis.
Declaration
public float XAcceleration { get; }Property Value
| Type | Description |
|---|---|
| System.Single |
Remarks
This property will only contain valid data after a call to Read or after an interrupt has been generated.
XVoltsPerG
Volts per G for the X axis.
Declaration
public float XVoltsPerG { get; set; }Property Value
| Type | Description |
|---|---|
| System.Single |
YAcceleration
Acceleration along the Y-axis.
Declaration
public float YAcceleration { get; }Property Value
| Type | Description |
|---|---|
| System.Single |
Remarks
This property will only contain valid data after a call to Read or after an interrupt has been generated.
YVoltsPerG
Volts per G for the X axis.
Declaration
public float YVoltsPerG { get; set; }Property Value
| Type | Description |
|---|---|
| System.Single |
ZAcceleration
Acceleration along the Z-axis.
Declaration
public float ZAcceleration { get; }Property Value
| Type | Description |
|---|---|
| System.Single |
Remarks
This property will only contain valid data after a call to Read or after an interrupt has been generated.
ZVoltsPerG
Volts per G for the X axis.
Declaration
public float ZVoltsPerG { get; set; }Property Value
| Type | Description |
|---|---|
| System.Single |
Methods
GetRawSensorData()
Get the raw analog input values from the sensor.
Declaration
public Task<Vector> GetRawSensorData()Returns
| Type | Description |
|---|---|
| System.Threading.Tasks.Task<Vector> | Vector object containing the raw sensor data from the analog pins. |
RaiseChangedAndNotify(AccelerationConditionChangeResult)
Declaration
protected void RaiseChangedAndNotify(AccelerationConditionChangeResult changeResult)Parameters
| Type | Name | Description |
|---|---|---|
| AccelerationConditionChangeResult | changeResult |
Read()
Declaration
public Task<AccelerationConditions> Read()Returns
| Type | Description |
|---|---|
| System.Threading.Tasks.Task<AccelerationConditions> |
StartUpdating(Int32)
Declaration
public void StartUpdating(int standbyDuration = 1000)Parameters
| Type | Name | Description |
|---|---|---|
| System.Int32 | standbyDuration |
StopUpdating()
Declaration
public void StopUpdating()Update()
Read the sensor output and convert the sensor readings into acceleration values.
Declaration
public Task Update()Returns
| Type | Description |
|---|---|
| System.Threading.Tasks.Task |
Events
Updated
Declaration
public event EventHandler<AccelerationConditionChangeResult> UpdatedEvent Type
| Type | Description |
|---|---|
| System.EventHandler<AccelerationConditionChangeResult> |