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Updated Power monitoring calibration (markdown)

blakadder 2019-10-27 21:21:13 +01:00
parent 400e8cc916
commit fbfbb44f07
1 changed files with 4 additions and 2 deletions
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6
Power-monitoring-calibration.md

@ -53,5 +53,7 @@ Repeat the procedure below for each of the three readings: Current, Power, and V
- If there is an observed difference, change the offset value by issuing the calibration command in the Console (e.g., `PowerCal 10000`)
- Adjust the offset value up or down until the readings on the multi-meter and the web page are as close as possible
# End
Congratulations, your device can now reliably monitor power consumption!
# Known issues
Power monitoring chips like the HLW8032 (Blitzwolf SHP5) and CSE7766 (Sonoff S31, Sonoff POW R2) occasionally report invalid power measurements for load values below 5W. During this situation it sometimes reports a valid load. By setting [SetOption39](commands#setoption39) to `128` (default) it must read at least 128 invalid power readings before reporting there is no load.
To discard all loads below 6W simply set `SetOption39 1` (`0` will reset to default on next restart) so it will report no load below 6W.