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Rencently, I'm working on the FPV for my CF2.
I orderd a breakout board and assembled well with the CF2.
I want to use the current from the CF2 battery and connect it with the DC to DC step-up voltage regulator which could output 5V voltage to supply my cammera and 5.8G transmitter.
But there are a lot of connection holes on the breakout board,I don't know the differences between VCOM,VCC and VUSB.
Could any one tell me more about them and tell me which hole should I connect?

VCOM will output the battery voltage but when USB power is connected it will become the USB voltage. Thus the voltage will swing between 3.0 (empty battery) to 5V (USB connected). This can however supply high current (1A) and should be used as the input to your step-up.

The prototype deck holes can be found on the wiki.

You only need to connect VCOM (F9) and GND (A10) as marked on the proto board to your step-up.

tobias wrote:VCOM will output the battery voltage but when USB power is connected it will become the USB voltage. Thus the voltage will swing between 3.0 (empty battery) to 5V (USB connected). This can however supply high current (1A) and should be used as the input to your step-up.

The prototype deck holes can be found on the wiki.

You only need to connect VCOM (F9) and GND (A10) as marked on the proto board to your step-up.

Thanks a lot,I use the breakout expansion board ,
and in your opinion, I should use the GND on P1 side and the VCOM on P2 side, am I right?

Yes, that's right