Remarks

HIH6130
Status
Source code	GitHub
NuGet package

The HIH6130 sensor allows the reading of the relative humidity and temperature via I2C.

Code Example

public class MeadowApp : App<F7Micro, MeadowApp>
{
    Hih6130 sensor;

    public MeadowApp()
    {
        sensor = new Hih6130(Device.CreateI2cBus());

        sensor.StartUpdating();

        sensor.Updated += Sensor_Updated;
    }

    private void Sensor_Updated(object sender, Meadow.Peripherals.Sensors.Atmospheric.AtmosphericConditionChangeResult e)
    {
        Console.WriteLine($"Humidity: {e.New.Humidity}, Temperature: {e.New.Temperature}");
    }
}

Sample projects available on GitHub

Purchasing

The HIH6130 sensor is available on a breakout board from Sparkfun.

• Sparkfun HIH6130 Breakout Board

Example:

public class MeadowApp : App<F7Micro, MeadowApp>
    {

        Hih6130 sensor;

        public MeadowApp()
        {
            Initialize();

            sensor.StartUpdating();

            sensor.Updated += Sensor_Updated;
        }

        private void Sensor_Updated(object sender, Meadow.Peripherals.Sensors.Atmospheric.AtmosphericConditionChangeResult e)
        {
            Console.WriteLine($"Humidity: {e.New.Humidity}, Temperature: {e.New.Temperature}");
        }

        public void Initialize()
        {
            Console.WriteLine("Init...");

            sensor = new Hih6130(Device.CreateI2cBus());
        }
    }

Wiring Example

The HIH6130 requires only four connections between Meadow and the breakout board.

Meadow Pin	Sensor Pin	Wire Color
3.3V	Vcc	Red
GND	GND	Black
SC	SCK	Blue
SD	SDC	White

Characteristic	Locus
Inheritance	System.Object FilterableChangeObservableBase<AtmosphericConditionChangeResult, AtmosphericConditions> > Hih6130
Implements	System.IObservable<AtmosphericConditionChangeResult> IAtmosphericSensor ITemperatureSensor IHumiditySensor
Inherited Members	FilterableChangeObservableBase<AtmosphericConditionChangeResult, AtmosphericConditions>._observers FilterableChangeObservableBase<AtmosphericConditionChangeResult, AtmosphericConditions>.NotifyObservers(AtmosphericConditionChangeResult) FilterableChangeObservableBase<AtmosphericConditionChangeResult, AtmosphericConditions>.Subscribe(IObserver<AtmosphericConditionChangeResult>) System.Object.ToString() System.Object.Equals(System.Object) System.Object.Equals(System.Object, System.Object) System.Object.ReferenceEquals(System.Object, System.Object) System.Object.GetHashCode() System.Object.GetType() System.Object.MemberwiseClone()
Namespace	Meadow.Foundation.Sensors.Atmospheric
Assembly	Hih6130.dll

Syntax

public class Hih6130 : FilterableChangeObservableBase<AtmosphericConditionChangeResult, AtmosphericConditions>, IObservable<AtmosphericConditionChangeResult>, IAtmosphericSensor, ITemperatureSensor, IHumiditySensor

Constructors

Hih6130(II2cBus, Byte)

Create a new HIH6130 object using the default parameters for the component.

Declaration

public Hih6130(II2cBus i2cBus, byte address = 39)

Parameters

Type	Name	Description
II2cBus	i2cBus	I2C bus (default = 100 KHz).
System.Byte	address	Address of the HIH6130 (default = 0x27).

Properties

Conditions

The AtmosphericConditions from the last reading.

Declaration

public AtmosphericConditions Conditions { get; protected set; }

Property Value

Type	Description
AtmosphericConditions

Humidity

The humidity, in percent relative humidity, from the last reading..

Declaration

public float Humidity { get; }

Property Value

Type	Description
System.Single

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	true if sampling; otherwise, false.

Temperature

The temperature, in degrees celsius (°C), from the last reading.

Declaration

public float Temperature { get; }

Property Value

Type	Description
System.Single

Methods

RaiseChangedAndNotify(AtmosphericConditionChangeResult)

Declaration

protected void RaiseChangedAndNotify(AtmosphericConditionChangeResult changeResult)

Parameters

Type	Name	Description
AtmosphericConditionChangeResult	changeResult

Read()

Convenience method to get the current sensor readings. For frequent reads, use StartSampling() and StopSampling() in conjunction with the SampleBuffer.

Declaration

public Task<AtmosphericConditions> Read()

Returns

Type	Description
System.Threading.Tasks.Task<AtmosphericConditions>

StartUpdating(Int32)

Declaration

public void StartUpdating(int standbyDuration = 1000)

Parameters

Type	Name	Description
System.Int32	standbyDuration

StopUpdating()

Stops sampling the temperature.

Declaration

public void StopUpdating()

Update()

Force the sensor to make a reading and update the relevant properties.

Declaration

public Task Update()

Returns

Type	Description
System.Threading.Tasks.Task

Events

Updated

Declaration

public event EventHandler<AtmosphericConditionChangeResult> Updated

Event Type

Type	Description
System.EventHandler<AtmosphericConditionChangeResult>