You can, the front footpad takes three wires, p+ from the pack, gnd from the pack and +5v from the can bus connector.
Yes i know but my question was at b264 if you didnât need the focer MCU pins to do something with a external mcu as input signals.
Will it be a horizontal version of the Serious FOCer as well?
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Actually Iâve long since moved on from this design for the big/serious FOCer but I havenât talked about it openly. As advised to me before, I need to move the little FOCer and big FOCer over to their own threads
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Not if you are modifying the software inside the FOCer, you have that information available.
Hi! A newbie here.
Here goes my question - I am planning to build an e-bike. Already have a 20S6P battery pack. So this would work perfect for me. I am currently playing around with generic 1500W controller with random motors around as for now.
But I wanna FOC instead 
And I have seen it being tested and confirmed by @shaman for the aforementioned purpose with mxus v3. I will use 45H V3 3K-Turbo 3000w. I am aware of the fact that I will not push it to the max. I am okay with having some headroom in the motor power.
But I want to overcomplicate things - I want a 2wd ebike, with some 500-1000W motor in the front wheel as well. I know it does not make too much sense butâŚ
I know Little FOCer can run dual motors. But can it run two different motors somehow trying to synchronize their speed only?
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Yes, you can use CANBUS to connect the motor controllers together. The motors need not be the same.
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are you sure a single (1) Little FOCer does not support running two motors simultaneously?
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Yes, itâs one motor per controller.
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@domas itâs one controller per motor. For running 2 motors, you would need 2 Little FOCers
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Yes.
(there are edge cases, in which you have two motors on one shaft, timed perfectly together and wired so that they mechanically and electrically behave like one big motor.)
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There is currently an unsolved firmware bug that prevents this from working correctly, last I heard.
I was under the impression that that was related to two motors and two ESCs working in concert.
With two motors/one shaft/one ESC, the ESC shouldnât be able to tell the difference.
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Ahh yes, I think you are correct.
Yes, I am very well aware of why it would not work if they are not perfectly aligned phase wise.
Damn, I interpreted âdual motor operationâ in a way I want to; Thats unfortunate.
Well I am a bit nosy thus I want to ask why does it have 9 heavy duty through hole connections on pcb?
It seems that 3 phase wires ant 2 power wires should be sufficient. Why the other 4?
Another thing. Most ESKs have dual motors as I see. Do the run dual controllers as well?
Most of them use two ESCs via canbus
But there are also dualcontrollers
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Because high current traces on the PCB are difficult to value-engineer, itâs easier to have a power and a ground for each phase. So power times three, ground times thee, plus the three phase wires, gives a total of nine pads. You can see the labels more clearly in the âSerious FOCerâ image.
They either run two single ESCs (one for each motor), or one dual ESC that is designed to run two motors (basically two singles on one PCB, sharing a few components like power supply bits.)
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Makes sense.
Thank you.
@MysticalDork and @domas
I wouldnât pay much attention to that image from the original post. That design is no more and the project has evolved much since them.
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Fair enough. I was just going off of what Domas mentioned.