Code used to log data from the ALX-1309 light meter, as seen in this Stand-up Maths video: https://youtu.be/IuUMxNfDfFY
It took a while to work out how to get data from the ALX-1309 without using the ancient Windows-only softwear it came with.
We are deeply in debt to this paper: https://ieeexplore.ieee.org/abstract/document/7147178
Which contains this table: TABLE II. THE CORRECT INTERPRETATION OF ACQUIRED ILLUMINATION DATA
Hexadecimal representation of the String Array elements Illumination (lux) Illumination range (lux) CE 00 80 14 92 0, 0, 80, 14, 92 1492 400-4000 CE 01 80 18 14 0, 1, 80, 18, 14 181,4 0-400 CE 01 88 04 95 0, 1, 88, 4, 95 49500 40000-400000 CE 02 88 09 17 0, 2, 88, 9, 17 9170 4000-40000