} = WeightUnits.Grams; // TODO: enter the units of the known-weight you used in calibration
public MeadowApp()
{
Console.WriteLine($"Creating I2C Bus...");
var bus = Device.CreateI2cBus();
Console.WriteLine($"Creating Sensor...");
using (_loadSensor = new Nau7802(bus))
{
if (CalibrationFactor == 0)
{
GetAndDisplayCalibrationUnits(_loadSensor);
}
else
{
// wait for the ADC to settle
Thread.Sleep(500);
// Set the current load to be zero
_loadSensor.SetCalibrationFactor(CalibrationFactor, new Weight(CalibrationWeight, CalibrationWeightUnits));
_loadSensor.Tare();
// start reading
while (true)
{
var c = _loadSensor.GetWeight();
Console.WriteLine($"Conversion returned {c.StandardValue} {c.StandardUnits}");
Thread.Sleep(1000);
}
}
}
}
public void GetAndDisplayCalibrationUnits(Nau7802 sensor)
{
// first notify the user we're starting
Console.WriteLine($"Beginning Calibration. First we'll tare (set a zero).");
Console.WriteLine($"Make sure scale bed is clear. Next step in 5 seconds...");
Thread.Sleep(5000);
sensor.Tare();
Console.WriteLine($"Place a known weight on the scale. Next step in 5 seconds...");
Thread.Sleep(5000);
var factor = sensor.CalculateCalibrationFactor();
Console.WriteLine($"Your scale's Calibration Factor is: {factor}. Enter this into the code for future use.");
}
