Power up?

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1

Hello
I am powering the px3 with a 3s
i am powering the ingine with a 4S
i like to monitor the engine baterry with the pixhawk power module
So i am planinig to cut the cable

Power Port Pinout Description:
1- Vcc (5V input)
2- Vcc (5V input)
3- I (Battery current measurement analog voltage input)
4- V (Battery voltage measurement analog voltage input)
5- Ground
6- Ground

can i use 1 ans 5 to just power the px4 with 5v
then use the power module to monitor the engine battery with

3- I (Battery current measurement analog voltage input)
4- V (Battery voltage measurement analog voltage input)
6- Ground
thank you

and why there is two + and ground

1- Vcc (5V input)
2- Vcc (5V input)
and
5- Ground
6- Ground

2

You don’t need to cut the cable, you can use your power module with the 4S battery and the 3S battery with a BEC as backup power, here is some information:
copter.ardupilot.com/wiki/common … er_Pixhawk