Very low voltage LED driver

This experiment shows a low voltage .9V to 5V DC/DC voltage booster that is lighting an led at very very low input voltage. The inexpensive booster can be found on EBay or Amazon. Once started the chip will keep running way below .9V.
The Thermo Electric Generator (TEG) that I am using here is a common SP1848 also found on EBay or Amazon.
This experiment was inspired by Lasersaber’s last video about energy harvesting using daily temperature shifts. This is the video:

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