thanks so much for all this great information! I just talked to a colleague from engineering and we will give this design a try!
We were also wondering if there is a way to create variation in the signal frequency so that we can identify individuals. For example... (read more)
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