Some of the drinking behaviours stored during the Oktoberfest. Connectivity was not existing at the Oktoberfest tents, so we couldn’t store more information using the GSM shield.
The field test was quite fun. BLE worked fine, but connectivity to the Web (via smartphone 3G) was zero. The plexiglass adapter suffered some Prosit-inflicted damage. We found a quick fix, but the design could probably be improved with this in mind.
Masskrug Arduino adapter (http://www.thingiverse.com/thing:157538)
Arduino Uno R3 with tilt sensor and Dr. M. Kroll’s BLE Shield v1.0 (http://www.seeedstudio.com/depot/bleshield-based-on-bluegigas-ble112-module-p-1367.html, tech details http://www.mkroll.mobi/?page_id=681)
Samsung Galaxy S4 Android smartphone with Samsung BLE SDK (http://developer.samsung.com/ble)
Source code (https://bitbucket.org/tamberg/oktoberfestofthings)
An #OktoberfestOfThings Masskrug must be
[R1] safe for drunk operation (no electro-shocks, no poked-out eyes)
[R2] battery powered (there’s no power sockets)
[R3] detachable (you cannot bring your own Masskrug)
[R4] connected (sensor measurements accessible on the Web)
[R5] open (measurements available in an open format like CSV, JSON or XML)
Back for the 2nd annual Oktoberfest of things! The Group trying to figure out how much beer we will all drink tomorrow.
Trying to improve on last year’s device by adding a bluetooth low energy chip. The device senses the tilt of the glass and sends the data to be track.
Also we are working on a sensor to try and detect the weight of the glass, so we can determine how much beer is left in the glass. We can detect if the glass in on the coaster and some changes, but the data is all over the place right now and we don’t know if it is the sensor or the coasters.
We even have custom made holders for the beer glasses!