This document will guide you through the Wireless Climate Monitor project. You will be able to see dashboard with temperature, humidity, ambient light and atmospheric pressure in Node-RED and view the data on your smart phone using the Blynk cloud and mobile app.

Block Concept

Requirements

  • Either BigClown Wireless Climate Monitor Kit, or individual components:

    • 1x BigClown Climate Module

    • 1x BigClown Core Module

    • 1x BigClown Mini Battery Module

    • 1x BigClown USB Dongle

  • One of these options:

    • BigClown Playground installed

      You can find more information in the document Playground Setup.

    • Raspberry Pi with the BigClown Raspbian distribution

      You can find more information in the document Raspberry Pi Installation.

  • BigClown Firmware Tool installed

    You can find more information in the document Toolchain Setup.

Firmware Upload

In this procedure we will use the BigClown Firmware Tool to upload firmware to the Core Module.

  1. Connect the Micro USB cable to the Core Module and your computer.

  2. Upload the firmware to the Core Module:

    bcf flash --dfu bigclownlabs/bcf-kit-wireless-climate-monitor:latest
    
  3. Remove the Micro USB cable from the Core Module and your computer.

Hardware Assembling

  1. Start with the Mini Battery Module.

  2. Plug the Core Module on top of the Mini Battery Module.

  3. Plug the Climate Module on top of the Core Module.

Playground Bootstrap

  1. Open Node-RED in your web browser:

    http://localhost:1880/

  2. You should see the empty workspace with Flow 1.

  3. Insert the following snippet in the flow (using Menu >> Import) and click in Flow 1 tab:

    [{"id":"2fc604fc.3b6abc","type":"inject","z":"dfc861b.b2a02a","name":"List all gateways","topic":"gateway/all/info/get","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"x":560,"y":460,"wires":[["a2c10833.24d5d8"]]},{"id":"1e4502b8.2f63fd","type":"inject","z":"dfc861b.b2a02a","name":"Start node pairing","topic":"gateway/usb-dongle/pairing-mode/start","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"x":570,"y":580,"wires":[["795ff5a7.8e266c"]]},{"id":"3d844ce2.932864","type":"inject","z":"dfc861b.b2a02a","name":"Stop node pairing","topic":"gateway/usb-dongle/pairing-mode/stop","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"x":560,"y":640,"wires":[["5967c452.c838bc"]]},{"id":"f202b253.2705b","type":"inject","z":"dfc861b.b2a02a","name":"List paired nodes","topic":"gateway/usb-dongle/nodes/get","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"x":560,"y":520,"wires":[["f0aca138.0b2c3"]]},{"id":"349f02fd.890f6e","type":"inject","z":"dfc861b.b2a02a","name":"Unpair all nodes","topic":"gateway/usb-dongle/nodes/purge","payload":"","payloadType":"str","repeat":"","crontab":"","once":false,"x":560,"y":700,"wires":[["2f1c5bb6.53d6f4"]]},{"id":"cf61d75d.4ad8f8","type":"mqtt in","z":"dfc861b.b2a02a","name":"","topic":"#","qos":"2","broker":"67b8de4a.029d3","x":530,"y":400,"wires":[["a5cb0658.f5d658"]]},{"id":"a5cb0658.f5d658","type":"debug","z":"dfc861b.b2a02a","name":"","active":true,"console":"false","complete":"false","x":790,"y":400,"wires":[]},{"id":"a2c10833.24d5d8","type":"mqtt out","z":"dfc861b.b2a02a","name":"","topic":"","qos":"","retain":"","broker":"717f7c18.ba0a24","x":770,"y":460,"wires":[]},{"id":"f0aca138.0b2c3","type":"mqtt out","z":"dfc861b.b2a02a","name":"","topic":"","qos":"","retain":"","broker":"717f7c18.ba0a24","x":770,"y":520,"wires":[]},{"id":"795ff5a7.8e266c","type":"mqtt out","z":"dfc861b.b2a02a","name":"","topic":"","qos":"","retain":"","broker":"717f7c18.ba0a24","x":770,"y":580,"wires":[]},{"id":"5967c452.c838bc","type":"mqtt out","z":"dfc861b.b2a02a","name":"","topic":"","qos":"","retain":"","broker":"717f7c18.ba0a24","x":770,"y":640,"wires":[]},{"id":"2f1c5bb6.53d6f4","type":"mqtt out","z":"dfc861b.b2a02a","name":"","topic":"","qos":"","retain":"","broker":"717f7c18.ba0a24","x":770,"y":700,"wires":[]},{"id":"67b8de4a.029d3","type":"mqtt-broker","z":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""},{"id":"717f7c18.ba0a24","type":"mqtt-broker","z":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""}]

    It will look like this:

  4. Deploy the flow using the Deploy button in the top-right corner.

  5. Open the debug tab:

  6. Click on the List all gateways button. You should see a response like this in the debug tab:

Radio Pairing

In this section, we will create a radio link between the USB Dongle and the Wireless Climate Monitor.

Follow these steps in Node-RED:

  1. Click on the Start node pairing button.

  2. Insert the batteries into the Wireless Climate Monitor to send the pairing request (you should also see the red LED on the Core Module to be on for about 2 seconds).

  3. Click on the Stop node pairing button.

Communication Test

Follow these steps in Node-RED:

  1. Switch to debug tab on the right.

  2. Start breathing on the temperature sensor on the Climate Module to invoke a change of temperature and hence trigger a radio transmission.

    You should then see similar messages:

Enclosure

Optionally put the assembly into the appropriate enclosure, if you have one.

Integration with Blynk

TODO