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Expected completion time of this lab:

20 min

.

Connect a reed switch to drive pin DP2 high/low
What circuit do you use?

Create the following Node-RED flow to enable digital input pin DP2
dustcloud > Lab 42. Dashboard: reed switch > image2017-4-20_0-41-50.png

The function node contains the following code:

msg.payload            = {
    "method" :  "PUT",
    "url" :     "/digital_in/D0", // D0==DP2
    "body":     {
        "enable":      msg.payload,
        "rate":        10000,
        "sampleCount": 1,
        "dataFormat":  1
    },
    "token":    "myToken",
}
return msg;

Add the necessary nodes to create the following dashboard:

Add a "notification" dashboard node which appears when the state toggles.