Totally automated IOT with zero user interaction. Also we were impressed with the sleep efficiency of several microchips.
What it does
It's a tiny chip that goes in or on a package. When it comes within range of a known wifi station it will connect and post to our server the ID of that wifi (and itself). Thus its position is known.
How we built it
The chip is an ESP8266, we coded it with the arduino coder. The webservices are done with node.js, and the backbone is done using postgreSQL and IBM bluemix
Challenges we ran into
sending to bluemix from ESP8266. We first also attempted using .NET but had to switch to node.js due to challenges.
Accomplishments that we're proud of
Extreme power efficiency (safe 90 days of operation), long wifi range, riddiculously cheap unit cost (< 3€ for materials (for a private person!))
What we learned
None of us had used node.js so we all learned a ton of that. We also learned a lot about IBM bluemix and developing a business model and hackathoning in general!
What's next for IOGScout
full-fledged prototype stage with a working web service! :)