According to the article, the device that is used in the article is here: Link to the device.
The thing is not clear to me is a general view of the architecture of this approach. That is, is it possible to install IOTA (https://github.com/iotaledger) and Node.js on such small devices that supports LoRaWAN ?
In my opinion, the proposed idea in the article has an architecture like this figure: https://imgur.com/a/ZvkgkBu (Please have a look the figure.)
In which, IOTA and Node.js is installed on an ordinary (normal) computer (instead of installing on small and low power device introduced in the article (Link to the device) In the page of device, you can see the hardware specifications.)
In more general question, is it possible to install IOTA and Node.js on such a small device? Or as the above figure, we have to install IOTA and Node.js on a normal computer which receives the messages from those devices and then encapsulates them in a IOTA transaction and sends the transaction to the IOTA tangle?