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One can buy off the shelf solar cell phone chargers, for example the SolPro that in direct sunlight can re-charge its battery (a Lithium-Polymer battery with safety circuitry and capacity of 4500mAh enough to keep a smartphone going all day) in 4.5 hours.
Accessing the MA data
This is saved in Firebase. Go to https://firebase.google.com/ enter the Google account pingeramity123@gmail.com plus the password (Les has the password). Then Go to console, then choose one of the documents (e.g. pinger-7db5c). To the left is a column with items such as Authentication and Database.
- Under Authentication +919999999999 is the guest access.
- The Database provides access to the data, click on ping and the individual records show up. Click on + signs to open each record.
Relevant papers
An analysis of power consumption in a smartphone, A. Carrol and G. Heiser, 2009
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