Overview

In this lesson - temperature and humidity data from a Tiny House was collected using a Pycom LoPy4 and transmitted to a local LoRa WAN Gateway
The data was processed in The Things Network
The data was subscribed to using MQTT using Node-RED
A time stamp was added simple time node
The data was processed using a process node to extract out temperature data
The data was then packaged so that it cold be dweeted.
The data will be available to students as a Dweet so that they can monitor the performance of their tiny house
Students will use Python to process the dweeted data (Dweepy module)

Node-RED Configuration

Follow the example below to configure the connection to the MQQT broker on The Things Network

Follow the example below for the security configuration.
Note that the username is whi-tinyhouse-12-temperature-pycom@ttn
Whereas the password is a very long chanracter set (40+ characters) obtained from the The Things Network Application page.
For security reasons, Node-RED will not retain any passwords if the node is copied.

simpletime adds time and date stamps to the data flow within Node-RED.
The simpletime node needs to be added to Node-RED using the Manage pallet function.

In this example the function node is used to:
- Extract temperature, humidity and battery data from the mqtt in data feed
- Then assign the data to variables
- And finally, dweet the data so that the data is available to students on the internet.

The http request node is able to Dweet the data package using the POST http operation.

The configuration of the http request node is shown below.
The node has been named dweet tiny house 12 data (name is lower down in node edit window - not shown).