Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

Characteristic	Locus
Inheritance	object ObservableBase<(Temperature? Temperature, RelativeHumidity? Humidity)> SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)> PollingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)> ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)> > Sht4x
Implements	IObservable<IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>> ISamplingSensor<(Temperature? Temperature, RelativeHumidity? Humidity)> ISensor<(Temperature? Temperature, RelativeHumidity? Humidity)> IDisposable ITemperatureSensor ISamplingSensor<Temperature> ISensor<Temperature> IHumiditySensor ISamplingSensor<RelativeHumidity> ISensor<RelativeHumidity> II2cPeripheral
Inherited Members	ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.BusComms ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.ReadBuffer ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.WriteBuffer ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Init(int, int) ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Dispose(bool) ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Dispose() PollingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.StartUpdating(TimeSpan?) PollingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.StopUpdating() SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.samplingLock SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Updated SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.SamplingTokenSource SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Conditions SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.IsSampling SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.UpdateInterval SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.ReadSensor() SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.RaiseEventsAndNotify(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>) SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Read() ObservableBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.observers ObservableBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.NotifyObservers(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>) ObservableBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.Subscribe(IObserver<IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>>) ObservableBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.CreateObserver(Action<IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>>, Predicate<IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>>) object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.MemberwiseClone() object.ReferenceEquals(object, object) object.ToString()
Namespace	Meadow.Foundation.Sensors.Atmospheric
Assembly	Sht4x.dll

Syntax

public class Sht4x : ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>, IObservable<IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>>, ISamplingSensor<(Temperature? Temperature, RelativeHumidity? Humidity)>, ISensor<(Temperature? Temperature, RelativeHumidity? Humidity)>, IDisposable, ITemperatureSensor, ISamplingSensor<Temperature>, ISensor<Temperature>, IHumiditySensor, ISamplingSensor<RelativeHumidity>, ISensor<RelativeHumidity>, II2cPeripheral

Constructors

Sht4x(II2cBus, byte)

Create a new SHT4x object

Declaration

public Sht4x(II2cBus i2cBus, byte address = 68)

Parameters

Type	Name	Description
II2cBus	i2cBus	I2cBus
byte	address	Sensor address

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

Properties

DefaultI2cAddress

The default I2C address for the peripheral

Declaration

public byte DefaultI2cAddress { get; }

Property Value

Type	Description
byte

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

Humidity

The current humidity

Declaration

public RelativeHumidity? Humidity { get; }

Property Value

Type	Description
RelativeHumidity?

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

ReadPrecision

Precision of sensor reading

Declaration

public Sht4x.Precision ReadPrecision { get; protected set; }

Property Value

Type	Description
Sht4x.Precision

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

Temperature

The current temperature

Declaration

public Temperature? Temperature { get; }

Property Value

Type	Description
Temperature?

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

Methods

GetDelayForPrecision(Precision)

Returns the appropriate delay in ms for the set precision

Declaration

protected int GetDelayForPrecision(Sht4x.Precision precision)

Parameters

Type	Name	Description
Sht4x.Precision	precision	Precision to calculate delay

Returns

Type	Description
int

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

RaiseEventsAndNotify(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>)

Raise events for subscribers

Declaration

protected override void RaiseEventsAndNotify(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)> changeResult)

Parameters

Type	Name	Description
IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>	changeResult

Overrides

SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.RaiseEventsAndNotify(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>)

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

ReadSensor()

Get a reading from the sensor and set the Temperature and Humidity properties.

Declaration

protected override Task<(Temperature? Temperature, RelativeHumidity? Humidity)> ReadSensor()

Returns

Type	Description
Task<(Temperature? Temperature, RelativeHumidity? Humidity)>

Overrides

SamplingSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>.ReadSensor()

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

Events

HumidityUpdated

Humidity changed event handler

Declaration

public event EventHandler<IChangeResult<RelativeHumidity>> HumidityUpdated

Event Type

Type	Description
EventHandler<IChangeResult<RelativeHumidity>>

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

TemperatureUpdated

Temperature changed event handler

Declaration

public event EventHandler<IChangeResult<Temperature>> TemperatureUpdated

Event Type

Type	Description
EventHandler<IChangeResult<Temperature>>

Remarks

Sht4x
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Sht4x sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    sensor = new Sht4x(Device.CreateI2cBus());

    var consumer = Sht4x.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Humidity.Value.Percent - old.Humidity.Value.Percent) > 0.05
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Relative Humidity: {result.New.Humidity:N2}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($"  Relative Humidity: {conditions.Humidity?.Percent:N2}%");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Wiring Example

To wire a Sht4x to your Meadow board, connect the following:

Sht4x	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3