Integrating Multiple Grove Sensors with an IoT Service

Products & Technology Grove
10

I have not had an opportunity to integrate the Air Quality sensor yet, but the general principle is the same. The goal is to establish a single MQTT client connection to AWS, and to send a single JSON payload (shadow):

indent preformatted text by 4 spaces
{
  "state": {
    "reported": {
      "temperature": "25.1",
      "humidity": "47.1",
      "UVIntensity": "0"
    }
  },
  "metadata": {
    "reported": {
      "temperature": {
        "timestamp": 1590451883
      },
      "humidity": {
        "timestamp": 1590451883
      },
      "UVIntensity": {
        "timestamp": 1590451853
      }
    }
  },
  "version": 776,
  "timestamp": 1590451883,
  "clientToken": "ec28eadf-fdf5-4f26-aa60-a268253e569a"
}