1N4148 forward voltage and temperature. Read the fixture limits in the article
before powering any hardware. The voltage and current calculations describe the
proposed fixture. No physical measurement is bundled.

Python 3 standard library:
  python3 test_actual_program.py
  python3 diode_temp.py synthetic-captures.csv --kind synthetic --series-ohms 3900

Copy observations-blank.csv for a real capture, fill the twelve rows, select
--kind observed, and supply the measured series resistance. Keep any room
return control observations in separate notes. The synthetic JSON is the exact
output of the command above. The figures are original editable SVG and PNG.
