siroxone buy some conformal coating like prf202 use a brush to cover the pcb. thats how we make our drones water resistant

BG411153883 not sure it will the mobula 6 uses a 25x25mm fc and the firefly nano a 30x30mm if you buy or print a adapter plate it should work. cheers!

BG411153883 i have looked here but cant find it i bought mine from amazon but they are available at ebay, search flipsky bluetooth module v6. baud rate needs to be at 115200 and sometimes the connector needs the tx to be connected to tx, instead of rx. its an easy fix swap to cables at the connector feel free to ask if you have further questions cheers!

BG411153883 i would guess so, i have no experience with scooters and kickbikes i use it for emtb. most if not all (nowdays) are brushless dc motors or 3phase motors with or wthout hall sensors. the lights and other electronics would need a buck converter to get a lower voltage but there is also lights nowdays that can take upto 48v batteries but most lights do not support it. hope this helps, feel free to ask if not cheers!