Cheap FOCer 2 (Open-source, Low-cost, VESC 6 based ESC) (v0.9 Release. Beta testing ongoing)

aletheuo · January 6, 2020, 7:02pm

This is the late Christmas news I didn’t know I wanted to hear.

rey8801 · January 6, 2020, 7:25pm

Unbelievable where you got. Happy NY man!

Hovav · January 11, 2020, 4:23pm

Parts arrived. Starting the build.

Any idea where to get the best firmware ?

Thanks to all !!

kalebludlow · January 11, 2020, 10:38pm

Not in this thread

itsrow · January 11, 2020, 10:55pm

Vedders site if you’re looking to flash MCU firmware, otherwise ackmaniacks is also liked if you’re looking for an older version.

Hovav · January 12, 2020, 2:35pm

thanks. can you please send a link ? is this in GITHUB ?

itsrow · January 12, 2020, 2:43pm

Ackmaniacks: https://github.com/Ackmaniac?tab=repositories

Original Vedder FW: https://github.com/vedderb

LR-designs · January 15, 2020, 12:38am

Really happy with the direction Cheap FOCer has taken.

Compared to V1
cheaper
easier to assemble
better design / vsc6

What’s not to love?

Hmm, needing custom firmware is the only downside.

shaman · January 15, 2020, 2:34am

Yeah that should only be temporary. When its all been tested and finalized, I’ll do a pull request on Ben’s GitHub to have it officially added to the VESC Project. This is done at Ben’s discretion so the firmware will be on my GitHub until it’s formally supported.

intradrive · January 16, 2020, 11:38am

Hi, I’ve been reading a few VESC forums for a while. I’m developing an ebike motor, this version of the VESC your developing looks great!
Could you clarify if the size 49mm x 100mm x 14mm is just for the populated PCB, or does it include the 2x caps? I want to make a rough 3d CAD model and see if it will fit the space I have available.
If I can assist with and CAD design - enclosure or similar - let me know!
Mark

shaman · January 16, 2020, 3:14pm

Welcome to the esk8 news forum!

That dimension is including the Caps. Thanks for the offer to help with an enclosure! I can send you a 3D model of the controller via PM if that helps.

intradrive · January 17, 2020, 10:37am

Hi Shaman, yes Please, that would be excellent!

jesus · January 20, 2020, 1:02am

https://youtu.be/sD8BRJH10bY Is this yours?

shaman · January 20, 2020, 1:10pm

That day I learned a corporate media team is not to be trusted. It will be ok they said. You won’t go on camera they said. You’ll just narrate…

linsus · January 20, 2020, 1:44pm

So handsome, I got semi chubby just watching.

BillGordon · January 20, 2020, 2:14pm

He did a nice job!

NuRxG · January 20, 2020, 9:39pm

How did you find that/ know it was him?

Remieknaapen · January 28, 2020, 8:23pm

Any news on this cheap FOCer 2 ?
I’m in the run for a new vesc for my DIY onewheel and this one looks very promissing to me!
If you need any beta testers i’d love to do that.

Here is a video of my diy onewheel.

itsrow · January 28, 2020, 8:27pm

I dont think the cheap focer 2has the gyro built into it thats required for standalone onewheel builds. You could however do it with an arduino over UART if you had to.

Edit: Also loving the DIY onewheel, looks very sleek.

shaman · January 31, 2020, 3:34am

50A operation at 50V

FOC current at 50A

Finally got around to testing under load properly. I now have a neat test rig. Two motors mounted and coupled at the shaft(giggity). Each motor has it’s own controller. One motor provides braking torque(load). The other is run like a normal. Behold the the test data!

So I do have an embarrassing story. For the life of me I couldn’t figure out why the controller behaved badly right at 40A. I attacked this issue for weeks. I thought it was the Op Amp I was using as the 3rd phase current sensor. This issue had me nearly crying in the corner before I realized the damn DRV8301 OC mode setting was the culprit. Disabled that and then bam…50A FOC at 50V!