The Lab likes the great outdoors. However, to enjoy hiking or 100+ km bicycle rides, one needs to keep properly hydrated. Probably the easiest way to take a large amount of water on a trip is to pour it into a so called “Hydration Pack” (a.k.a. “Camelbak”). The only problem with those things is that it’s rather tricky to tell how much water remains in the bag. And this is where technology comes to the rescue! Using a water flow meter and a Bluetooth-enabled micro-controller, the Lab has built a basic water consumption device that reports the amount of water consumed and remaining to an Android application which in turn displays this information on a smartphone.
The project has been described in detail on Hackster.io