Remarks

Temt6000
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

The TEMT6000 is an analog ambient light sensor.

Code Example

Temt6000 sensor;

public MeadowApp()
{
    Console.WriteLine("Initializing...");

    // configure our sensor
    sensor = new Temt6000(Device, Device.Pins.A03);

    // Example that uses an IObservable subscription to only be notified when the voltage changes by at least 0.5V
    var consumer = Temt6000.CreateObserver(
        handler: result => Console.WriteLine($"Observer filter satisfied: {result.New.Volts:N2}V, old: {result.Old?.Volts:N2}V"),
        // only notify if the change is greater than 0.5V
        filter: result => {
            if (result.Old is { } old) { //c# 8 pattern match syntax. checks for !null and assigns var.
                return (result.New - old).Abs().Volts > 0.5; // returns true if > 0.5V change.
            }
            return false;
        });

    sensor.Subscribe(consumer);

    // classical .NET events can also be used:
    sensor.Updated += (sender, result) => {
        Console.WriteLine($"Voltage Changed, new: {result.New.Volts:N2}V, old: {result.Old?.Volts:N2}V");
    };

    //==== One-off reading use case/pattern
    ReadTemp().Wait();

    sensor.StartUpdating(TimeSpan.FromMilliseconds(1000));
}

protected async Task ReadTemp()
{
    var result = await sensor.Read();
    Console.WriteLine($"Initial temp: {result.Volts:N2}V");
}

Sample project(s) available on GitHub

Wiring Example

To wire a Temt6000 to your Meadow board, connect the following:

Temt6000	Meadow Pin
GND	GND
SIG	A03
VCC	3V3

It should look like the following diagram:

Characteristic	Locus
Inheritance	System.Object ObservableBase<Voltage> SensorBase<Voltage> AnalogObservableBase > Temt6000
Inherited Members	AnalogObservableBase.Voltage AnalogObservableBase.StartUpdating(Nullable<TimeSpan>) AnalogObservableBase.StopUpdating() AnalogObservableBase.ReadSensor() SensorBase<Voltage>.Updated SensorBase<Voltage>.samplingLock SensorBase<Voltage>.SamplingTokenSource SensorBase<Voltage>.Conditions SensorBase<Voltage>.IsSampling SensorBase<Voltage>.UpdateInterval SensorBase<Voltage>.RaiseEventsAndNotify(IChangeResult<Voltage>) SensorBase<Voltage>.Read() ObservableBase<Voltage>.observers ObservableBase<Voltage>.NotifyObservers(IChangeResult<Voltage>) Meadow.Foundation.ObservableBase<Meadow.Units.Voltage>.Subscribe(IObserver<>) Meadow.Foundation.ObservableBase<Meadow.Units.Voltage>.CreateObserver(Action<>, System.Nullable<Predicate<Meadow.IChangeResult<UNIT>>>)
Namespace	Meadow.Foundation.Sensors.Light
Assembly	Temt6000.dll

Syntax

public class Temt6000 : AnalogObservableBase

Constructors

Temt6000(IAnalogInputController, IPin, Int32, Nullable<TimeSpan>, Nullable<Voltage>)

Creates a new Temt6000 driver

Declaration

public Temt6000(IAnalogInputController device, IPin pin, int sampleCount = 5, TimeSpan? sampleInterval = null, Voltage? voltage = null)

Parameters

Type	Name	Description
IAnalogInputController	device
IPin	pin	AnalogChannel connected to the sensor.
System.Int32	sampleCount
System.Nullable<TimeSpan>	sampleInterval
System.Nullable<Voltage>	voltage

Temt6000(IAnalogInputPort)

Creates a new Temt6000 driver

Declaration

public Temt6000(IAnalogInputPort port)

Parameters

Type	Name	Description
IAnalogInputPort	port