My Hoverboard DD wheel

Hey all,

First post here. Just wanted to say hi and show what i've built so far.
Started with a dead hoverboard and removed the motors.

Disassembled the motor and drilled the shaft out with a 9mm drill bit and removed the wiring and circuit board for the inbuilt hall sensors.

Then i designed and printed various mounts for the encoder, odrive 3.5 (clone), FN120 mosfet and 50wR4 braking resistor.




The encoder is connected through the shaft to the adapter i printed to mount a thrustmaster wheel using 3mm stainless rod which then connects to the 6mm encoder shaft with a printed adapter. I still need to wire up the mini-din 6 pin adapter but need to figure out how i want it to interface/connect to the case first.

I also designed an angled desk clamp setup to secure it in place.

The whole thing is powered by a 19.5v 12.3A laptop power supply from Dell/Alienware. I will chop off most of the round part at rear of the chassis and make up a panel to secure the power supply lead and usb cable. Still have to design a cover for the top of everything, however another member on the forums seems to have done something similar so hopefully he'll be able to find the file to share.

Finally, i'd like to take credit for how this all works, but frankly, coding is something i know nothing about. This project has built entirely around the works of @Roman Smoliakov. He has a github where the project is documented along with custom firmware for the odrive and his own configration software.
https://github.com/o-devices/bldc-ffb-wheel

Additionally he has a great thread on a russian forum containing all his works:
https://forum.simracing.su/topic/4400-dd-rul-iz-hoverborda-ya-sdelal-eto

fixed files in previous (deleted) upload

Finished product.
Thanks to @Chris_Beeves for the stl for the top cover!

This looks really close to ideal man! Great job!
Does the encoder axle share the 9mm hole with the motor cables now?

Yes the encoder shares the hole in the shaft. Theres possibility for very slight rubbing, however i dont foresee this being a big issue given the speed and amount of rotation being fairly minimal.

Absolutely, can’t see that being an issue for the next 100 years or so.

How do you like the odrive solution? I haven’t gotten around to buying one yet. Tried an Odesc but couldn’t get it working.

W

Works very well once you dial in the braking resistor side of things.

So with this setup you dont need a separate controller board but you use that built in stm32 in odrive(clone) to control the force feed back? am i getting anything wrong here?

It’s all-in-one. Just connect power, motor and encoder and you’re set.
Well, you need to add a braking resistor and a mosfet for that, but no external mcu.
I love it.

I just finish building the wheel with this setup and firmware but i cant config encoder CPR is that mean i have to emailed to the owner of this firmware to request for serial key? (picture below)

Exactly. It’s ok without if you have the same cpr only

This looks awesome.
I have ordered my stuff from Ali but thats probably only going to get here sometime in Jan.

I do have 2 questions about your setup.

1. The stl file provided the encoder jointer stl seems a bit different than what you have in your pictures with the wheel attached unless I am missing something simple.

2. I tried finding the top plate from @Chris_Beeves I can seem to find the stl for that.

I can't guarantee it will fit, but you can try:

Let me know how it worked out @Riaan Van Lill!

Hey thank you.

Yes I am currently waiting for the hoverboard to arrive will take it apart befor printing this one as it is big want to messure it before printing. I am also going to have to wait for the conponents to come from ali and thing this will onlt be here some time in Jan next year. I will keep you posted

The joiner connects a 3mm shaft to the 6mm shaft on the encoder.
You will need to file a flat side on the 3mm shaft to fit it. I also heated the shaft up before inserting to ensure a tight fit.

Made a modified adapter to mount the steering wheel.
I added keys/notches to make the mounting more secure and prevent twisting.

Super impressed with this!

Hey there, I am digging into this kind of a project myself, could you tell me what board is used in order to control the breaking resistor as it is the only part that I am confused on.
Br.
Hector