I work for a UK company that makes (amongst other things) tracking and surveillance technology. Usually we sell this technology to law enforcement and other agencies that have a use for this type of thing.
We want to do something philanthropic and thought that our equipment and... (read more)
Here is another TEG that looks promising.
Texas Instruments bq25570 Ultra Low Power
Harvester Power Management IC
This is all very interesting. The solution you describe seems eminently doable and in fact quite cheap. So doable and cheap that it may behoove one to also ask what the higher level vision is, in order to further constrain the solution.
For instance is there a wider... (read more)