Power measurements

[Der Geist der Maschine]

What I wrote is not what I meant ;-/ I meant "capacity". "current_now" might be also worth monitoring.

Any of those three would give you some idea of what's happening... `voltage_now` constantly dropping would tell you either the unit isn't plugged into external power, or the power supply can't keep up with the load. `current-now` would be the best of the three to monitor, as it will respond a lot faster than `capacity`, and will go positive/negative depending on if the unit is charging or discharging.

Depending on what how the paths have changed (if any), this script I used for the original pinebook with A64 processor might be handy to use now... logs to screen and file for later analysis.

https://github.com/pfeerick/pine64-scrip...yLogger.sh

Earlier this day, I measured all three with a 1 liner

make -j5.

Copy/paste removed the tabs.
 
time     capacity current voltage
18:58:13 100 0 4357000
18:58:14 100 0 4357000
18:58:15 100 0 4357000
18:58:16 100 0 4357000
...
19:31:55 100 0 4203000
19:31:56 100 0 4203000
19:31:57 100 0 4203000
19:31:58  91 0 3971000
19:31:59  91 0 3971000
19:32:00  91 0 3971000
19:32:01  91 0 3971000
19:32:02  91 0 4202000

Capacity significantly went down within a second. I assume during that second, there was a spike in current as well.