Hi
I am planning on building a Tarot T18 Octacopter later this year and need some help with '' Amps ''. I have smaller drones which draw tiny amounts but this one will be a heavy duty build. Will be using 6s Lipo.
The motors are T-Motors MN 5212 KV 340. Planning on using 16'' props : that will draw 21.6 Amps at 100% each.
That is 172.8 Amps total with all 8 motors at 100% with 16'' props.
Max Continuous current(A)...35A / motor.
I know I won't be pushing 100% on all motors. But would like to make sure my flight controller can handle the Amp draw, and not hope that I don't reach the peak point. All the flight controllers that I have looked at can only handle between 60Amps - 180 Amps ( Attopilot). Or they can't handle 6s Lipos.
Can I run the Pixhawk on a separate battery/ use a UBEC to power the flight controller e.g. hoverfly pro. Or what suggestion can be given to me?
Thank you :)
Replies
For big setup like this, try to estimate at best your typical weight with payload and check that LiPo is Ok for the desired current. With low Kv, try your motor/esc setup on a thrust stand to double check that you don't loose sync at high rpm or large throttle changes.
Then for current monitoring, 2 options that I have seen here:
http://diydrones.com/m/discussion?id=705844%3ATopic%3A2136047
Or with distribution board and some more power supplies:
http://diydrones.com/m/discussion?id=705844%3ATopic%3A2164475
Both have hall sensor which is great, then it depends if you prefer cable harness or soldering on a power distribution board.