I'm looking at using android internal sensors to record sound levels (Db) and light levels (Lux). I know there is an ODK Sensors project, but as far as I can see it's been used to access external sensors, like a printer or an arduino with attached sensors. Basically, it looks like it pairs with a bluetooth device to record a reading.
The internal sensors on androids have all kinds of nifty applications, and there are apps like Google Science Journal that will access and record sensor readings. Since these sensors are not accessed through a bluetooth connection, is the ODK approach different to use them? If I want to build a widget for ODK Collect that measures audio or light levels, is it better to do it using ODK Sensor Framework with Collect, or is it better to approach this using the 2.0 approach with ODK Survey?
Your wisdom will be welcome before I get started in the wrong direction.