The VSCP MQTT demo code is now also live on our demo server. This is probably the most ugly and boring demo around – it will improve over time – but the technique behind it is interesting. At the moment it basically just show the temperature in our fridge in some different ways. Not very interesting but it’s live and real time data.
It is also worth noting that everything is secured with TLS. From the source up to the actual widget.
The source generating data is a small device (Kelvin NTC10K) that does not have Internet capabilities but instead communicate over a CAN bus which is connected to a VSCP daemon which in turn publish received events to a local MQTT broker on JSON format. This data is then forwarded to the demo server.
With VSCP it is possible to write widgets like this once and then use them for different scenarios multiple times. Just by using the tools we all have been using for many years now. Things that web designer people do well.
Try yourself to plot the data using charts.js for example.