Digital liquid level switch

Digital liquid level switches are devices that can detect the presence of liquid/water. GPIO can be used to communicate with the devices.

Documentation

The implementation supports any single pin output digital liquid level switch.

• LLC200D3SH sensor datasheet

Usage

Define the LLC200D3SH sensor using the LiquidLevelSwitch class.

using (LiquidLevelSwitch sensor = new LiquidLevelSwitch(23, PinValue.Low))
{
    while (true)
    {
        // read liquid level switch
        Debug.WriteLine($"Detected: {sensor.IsLiquidPresent()}");
        Debug.WriteLine();

        Thread.Sleep(1000);
    }
}

An example on how to use the specific LLC200D3SH device binding is available in the https://github.com/nanoFramework/nanoFramework.IoT.Device/tree/develop/devices/LiquidLevel/samples folder.

LLC200D3SH Circuit

The following fritzing diagram illustrates one way to wire up the Optomax LLC200D3SH digital liquid level switch with a MCU.