esc current sensing setup

S

stormtrupr

Member
trying to setup racerstar 35a 4in1 ESC to a flip32 omnibus f4 v3 flight controller. found a good 4in1 esc tutorial on youtube by blue falcon which connects a 4in1 to a omni f4, but i cannot get the current sensing to work. i am connected via dshot600 and ibus and can fly the quad fine. is the crnt pin of the FC digital or an analog connection? i checked available uarts but the "crnt" pin doesnt seem to be on a UART. esc current us on in betaflight and is also turned on in the OSD. any ideas to what i am missing?

Thanks
 
thanks, i checked out the video and it is what i initially used along with blue falcons 4in1 video to wiring things up. However, this video does not explain how to get current from a non pro board that doesnt have the built in currentshunt resistor. my setup has the current sensor on the ESC which is also acting more or less as my pdb. i am thinking the current link from the esc is a digital link via dshot but ive got something wrong on it that i cant figure out no matter how many videos i watch. lol
 
o_O ... I just watched the other blue falcon video too https://www.youtube.com/watch?time_continue=47&v=al4G6XJPD9c
on the 4in1 ESC wiring and it seems dirt simple ... lol ... The CRNT pin on the ESC gets connected to the same designation of the FCB and voila,
done (the motors wiring not so much simple). If you've rechecked all your connections (as I'm sure you have) then perhaps it's a board problem
and not your wiring ? ... I'd recommend getting either another FCB (with on board current sensor shunt) or an ESC board. Do keep the old ESC board
(if you're replacing that) because one of the problems with any 4in1 is that upon frying only one ESC the entire board generally gets replaced
(wasting three perfectly good FET circuits), this way not only might it solve the problem your having but you'll also have spare parts for repairs of the
one that's working properly should it ever fry any of the ESCs on it. ;)
 
After you've got it sorted be sure to check the accuracy of your readings too.
This guy, Joshua Bardwell, is a very good source:
... :)
 
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