[chbot] Electrical Meter LED pulse detection and capture

[Peter Harris]

Open Energy Monitor dot org has a good guide to the subject.

https://learn.openenergymonitor.org/electricity-monitoring/pulse-counting/introduction-to-pulse-counting

Modern meters also have an infrared serial port which could allow direct
access to meter data, unfortunately experimentation and conversation with a
club member with knowledge of the subject shows that these data are secured
by passwords.

BFN
  P
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