The Things are coming…

Recently, I attended #offcamp – a barcamp style discussion around open data which was organised by @bcs_isleofman and free to attend.

The morning sessions were OK and it was good to see that some thought is being given to making data open and available, especially data that has been collected by governments and already paid for by the public.

However, what really caught my attention was the crowd sourcing of data using sensors and the Internet of Things. I hadn’t realised that the problem of expensive telecoms links for remote IoT devices is beginning to be solved by new RF chipsets based on spread spectrum techniques similar to those used in QRP amateur radio experiments.

Sadly most of these RF technologies are proprietary, but that doesn’t mean that the infrastructure built with them has to be. A group of people from Amsterdam have built The Things Network which is an open movement with the aim of providing free and open communications for IoT devices around the world.

Given my interest in radio and electronics, together with the open philosophy of building something free for community use, I knew that I wanted to get involved with this. So, I’ve established an Isle of Man community with the aim of getting our very own Things Network established here.

Guerrilla Wifi?

This week, I tried some different firmware on the ESP8266 modules that I have. I flashed a version of NodeMCU which allows Lua scripts (and other files) to be uploaded.

By using this software: https://github.com/reischle/CaptiveIntraweb I was able to turn the ESP8266 into a wifi access point which serves a static site, regardless of what web address the end user tries to reach.

Given the small size and modest power requirements, this would be great for announcing things to a wide audience by placing an ESP8266 in a busy area, and choosing an ‘inviting’ SSID for people to connect to.

I’ll leave it up to you to decide whether to use this for marketing, advertising or political activism…