[Kore Carrier] Inconsistent information about BATT_AMP_OFFSET and BATT_AMP_PERVOLT

[BrunoBagariniArys]

The values for these two parameters presented on the CubePilot Docs are different from those presented on Spektreworks website. When I tried the values from the CubePilot Docs the UAV reported negative current values when disarmed.

Table presented at SpektreWorks Website:

Table presented at Cubepilot Docs:

Sorry I have never edited a Docs at Github so I preferred to just open this issue.

[xfacta]

I concur with BrunoBagariniArys
I've been conducting test flights for the purpose of calibrating the current measurement accurately and I've found the following values apply to two Kore Carrier boards of recent versions.

BATT_AMP_OFFSET 	0.37
BATT_AMP_PERVOLT 	68.5
BATT_VOLT_MULT	 	15.3

This is the method used:

• Plug in a fresh battery and do a hover flight for 5 minutes or until you've used a significant amount of battery capacity
• Immediately unplug the battery and charge it, note how many mah’s it took to charge. Let’s say that was 7837 mah
• Download your log and look at maximum Bat.CurrTot. Let’s say it was 5733 mah
• Get your existing BATT_AMP_PERVOLT setting from Mission Planner, let's say 50
• NEW_AMPS_PER_VOLT = OLD_AMPS_PER_VOLT x CHARGED_MAH / LOGGED_MAH
  With my example numbers, you’d get
  NEW_AMPS_PER_VOLT = 50 x 7837 / 5733 = 68.35
• Set the new value in the BATT_AMP_PERVOLT parameter and save to your copter
• Fly to check, repeat until you’re happy the new value gives consistent readings

Another test flight gave a calculated value of 68.89
I would say 68.5 is a suitable value for general use across different boards.