Meadow.Foundation.Sensors.Environmental.AtlasScientificGravityDOMeter

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

Code Example

AtlasScientificGravityDOMeter sensor;

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

    sensor = new AtlasScientificGravityDOMeter(Device.Pins.A01);
    sensor.CalibrationInAir = new Voltage(0.04, Voltage.UnitType.Volts);

    // Example that uses an IObservable subscription to only be notified when the saturation changes
    var consumer = AtlasScientificGravityDOMeter.CreateObserver(
        handler: result =>
        {
            string oldValue = (result.Old is { } old) ? $"{old * 100:n1}" : "n/a";
            string newValue = $"{result.New * 100:n1}";
            Resolver.Log.Info($"New: {newValue}%, Old: {oldValue}%");
        },
        filter: null
    );
    sensor.Subscribe(consumer);

    // optional classical .NET events can also be used:
    sensor.Updated += (sender, result) =>
    {
        string oldValue = (result.Old is { } old) ? $"{old * 100:n0}%" : "n/a";
        Resolver.Log.Info($"Updated - New: {result.New * 100:n0}%, Old: {oldValue}");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    Resolver.Log.Info("Run...");

    await ReadSensor();

    //example calibration setting, ensure the sensor is set up for calibration 
    var calibrationVoltage = await sensor.GetCurrentVoltage();
    sensor.CalibrationInAir = calibrationVoltage;

    Resolver.Log.Info($"Calibration voltage: {calibrationVoltage.Volts}V");

    sensor.StartUpdating(TimeSpan.FromSeconds(2));
}

protected async Task ReadSensor()
{
    var saturation = await sensor.Read();
    Resolver.Log.Info($"Initial saturation: {saturation * 100:N1}%");
}

Sample project(s) available on GitHub