Uploading IOT data via scripts

[gatorback]

A thermostat device returns JSON like data from the command line:

curl -s http://192.168.X.Y/tstat/humidity
{"humidity":51.00}

A cron job wass configured to execute a .sh UNIX script to save data to a USB memory stick. The next step in the pedagogical exercise is to upload data to a cloud service and visualize data

It would be interesting to setup a UNIX cron job to periodically script the upload of the data to a host so that it can be visualized (graphed). The command line device is an Asus router Configured with Merlin ASUS WRT and its abridged command set.

QUESTIONS
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1) What is the keyword search term that would quickly narrow down the IOT service providers and provide example of an API that allows the router to upload data from a command line script (UNIX instructions)? I think this is a RESTful API.

2) If this is not possible, what are the leanest \ smallest options of API classes (Python MQTT etc). The better options have a small foot print because RAM is limited?

I realize that a router is not a raspberry pi, nor is it design for this purpose. That being said, I am speculating that the task to query and upload a measurement is well within the hardware's capability. The goal is to avoid re-inventing wheel: examples of routers configured to upload data to a IOT cloud service is appreciated. Any lessons-learned are also appreciated. Thank you.

 

[JDB]

The router is even capable of hosting the data and a webpage to display it.

I would take a look at storing the info in RRD format as it is easy to produce PNG graphs from that.
This project (https://github.com/kvic-z/goodies-asuswrt/wiki/Install-NTP-Daemon-for-Asuswrt-Merlin) stores NTP data in RRD and then levers it into the router web UI itself.

I run Lighttpd on mine to host a PHP/JavaScript driven web remote I developed for my Sky Q STB (saves me hunting for the TV remote when the kids have moved it!).

Just another angle if cloud storage is not a must. This way you keep your data and just VPN Home to view it remotely.


Sent from my iPhone using Tapatalk

 

[kvic]

Take a look at the "NTP Daemon" as suggested by @JDB. Actually it'll be quick and easy to adapt for your purpose.

It might be possible to run Netdata from Entware on your router and hook up the data collection with a script. Never looked at it before but I could imagine that's a possibility..

Or you can setup a Rasp Pi or a Linux server to host your data collector & visualization. Many packages available from small to glorified solutions.

Personally I run MRTG on Asus 56U. Since it'll be a support nightmare, I don't advertise nor advocate. Nevertheless, it serves me very well for over a year now.