hello every one!
ive been spending some time optimizing some drone designs and theres one thing im not sure if there might be a solution at all
so here goes "nothing"
most drones usually have the speed controllers for the motors on separate PCB's that are connected to a power distribution board and the flight controller
in my case:
- i have two 14AWG wires for the power (up to 24V/35A)
- and another two 26AWG 5V digital signal wires to the flight controller
- power and signal have a common ground
- and not connecting the signal ground can apparently lead to issues with the signal integrity
now heres the problem:
if for some reason (usually crashes or tree branches) the power ground wire gets disconnected, the power will find its way through the signal cable and therewith cause a meltdown
which doesnt just kill the wire/s but also the speed- and often even the flight-controller
and i cant just use a thicker wire for the signal, since the flight controller wont tolerate more than 1-2A either
so ive been wondering:
is there a way to somehow integrate a fuse or similar, that will prevent stuff from being blown up?
or would a fuse lead to signal issues as well?
thank you!!