Bolt pin N11,N12

[SH_Lee]

I'm developing a drone using a bolt.
In addition, I would like to use another pin to combine LEDs.
But I already use another deck, so I have few extra pins.
After looking at the available pins, we found that pins 6 and 7 on the right-hand side of the bolt are available.
However, this pin reads N11, N12, which starts with n_ instead of pa_/pb_ like other pins.
I couldn't get any information about this when I looked at the Chemistry of the Bolt.
One guess seems to be a pin used for radio communication using nrf.
Am I right?
Can you explain the exact purpose and serviceability of this pin?

[tobias]

You guessed correctly. The N* pins are connected to the radio MCU, nRF51822, and can be used from that MCU. Check the expansion port pinout for more information.

[SH_Lee]

So when we manipulate this randomly, doesn't nrf have a problem?
We are currently connecting the bolt with the client by wireless radio and using 3 drones and p2p communication.
Is there a problem if we randomly connect lead to pin and give pwm signal?

[tobias]

You mean that you have connected other signals to these pins from e.g. another MCU? The P0.11 and P0.12 pins are configured as inputs by default so should be no problem if they are driven from something else as long as they are not higher then 5V.