Hey guys. Have recently crashed hard with my qav 210, smashing it beyond repair. Luckily i had a spare frame and have used it to get flying. Problem is its an x frame with no room for my balance lead battery voltage alarm. I have a lost model buzzer soldered on, so can i set that to act as low battery alarm through the vbatt headers on my sprf3 evo, andd if so, where do i solder other end of wires? Are they soldered somewhere on the pdb?