Adding a Sensor that measures more than one Quantity Kind

[Baalmart]

• What were you trying to achieve? Trying to add a sensor that measure many quantity kinds. More like a purchased Sensor that has the same attributes as a Device.
• What are the expected results? Ability to easily add a sensor which measures many quantity kinds
• What are the received results? I can only be able to add one quantity kinds per sensor
• What are the steps to reproduce the issue? Just visit the Dashboard, head to a device and then try to add a sensor
• In what environment did you encounter the issue? Wazicloud dashboard.

[cdupont]

It's a good point... Currently on the WaziCloud dashboard, we have a "Device" (e.g a WaziDev) that can contain several "Sensors". A sensor measures only one physical quantity, e.g. temperature, humidity... However, it is possible that the thing measured has several values: e.g. a GPS position has 3 values: latitude, longitude, altitude. In this case, it is stored in the sensor value as a JSON compound: {latitude: 41.03265, longitude: 3.25698, altitude: 12}.

Here is an example for sending GPS coordinates with WaziDev:

#include <WaziDev.h>

// new WaziDev with node address = 8 
WaziDev wazidev("MyDevice", 8);

void setup()
{
  wazidev.setup();

  // Open serial communications and wait for port to open:
  Serial.begin(38400);
  // Print a start message
  Serial.println(F("Tests of WaziDev communications"));
}

void loop(void)
{
  // Send GPS coordinates
  wazidev.send("\\!UID/MyDevice2/GPS/{\"BC\":2230,\"LAT\":-1.34683,\"LGT\":36.70799,\"FXT\":6,\"P\":\"N\"}");

  delay(3000);
}

This code will result with only one sensor created on the WaziCloud dashboard. This sensor will be named "GPS" and have the value {"BC":2230, "LAT":-1.34683,"LGT":36.70799,"FXT":6,"P":"N"}. Your application can then read the JSON value using the WaziCloud API and exploit it.

[cdupont]

Anyway, if you have a commercial sensor that measures two different things (like the DHT11), I think it's preferable to create 2 sensors on the dashboard...

[Baalmart]

Okay, using JSON is a good approach. Thanks.