Meadow.Foundation.Sensors.Atmospheric.Hih6130

Hih6130
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

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

Code Example

Hih6130? sensor;

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

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

    var consumer = Hih6130.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?.Temperature is { } oldTemp &&
                result.Old?.Humidity is { } oldHumidity &&
                result.New.Temperature is { } newTemp &&
                result.New.Humidity is { } newHumidity)
            {
                return ((newTemp - oldTemp).Abs().Celsius > 0.5 &&
                        (newHumidity - oldHumidity).Percent > 0.05);
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Temperature: {result?.New.Temperature?.Celsius:F1}°C");
        Resolver.Log.Info($"  Relative Humidity: {result?.New.Humidity?.Percent:F1}%");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    if (sensor == null) { return; }

    var result = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Temperature: {result.Temperature?.Celsius:F1}°C");
    Resolver.Log.Info($"  Relative Humidity: {result.Humidity:F1}%");

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

Sample project(s) available on GitHub

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