Trying to build a 2 DOF Rig

And amazon reviews. there's a dozen reviews explain to remove R4 and possibly R1 for analog out. iic works as is. which makes sense since the boad/chip combo was designed for stepper motors encoders.

I removed R4 and R1 and it works with analog output now. I think removing R1 increased the V output? im going to try the burn angle of 200deg via iic, But also had epiphany that most accurate way would be to burn the angles once fitted to the rig and do the 3 wire manual burn at max and min stroke. that would take away V/angle error if magnet is not dead center.

FYI, the 2-5deg float in the lever was software related not gear sloop.
I fixed it with tweaking settings PWMmin and KI

Great news, fine tuning...
Have you finished the build? Are you doing to add traction loss?

Its reassembled with the 180 hall pots. i figured ill install those while i work out the as5600 programing.
Its much better now with greater travel and much tighter.
I also reduced motor coil noise significantly by setting Fpid to 8.

Tested in simtools only.
Havent tried in game yet with the new pots and settings. ll probably have to re calibrate the axis % loads.

Traction loss not done yet. i just wanted to test the pots first.

how is your one coming along?

The motors will only arrive in one month
Already have all the electronics, the power supplies, already made a 3d sketch.

I'm also missing the seat, my brother in law has a friend that races and he has some old sports seats lying around, he said that he would get me one for free.

Without the motors its a bit hard to advance in the build (and the motors bought in Amazon are coming from China, so, the probably to have it delayed due to customs is about 99%.

I can start building a control box for the Arduino, power supplies, motor controllers and make it with pluggable wires so its kind of a black box.

If you have any advice, just let me know

Well, it seems that the amazon seller is a scammer

Trying to get my money back

What motors did you order and what was the cost and wattage?

the only advice I have for the brain box is to use a box large enough to fit 3-4 Ibt2 controllers so it can accommodate the 3rd dof and potentially a wind simulator in the future. The new simtools version features wind simulation. So the one Arduino can run motion and wind.

When I built my box I only had enough room for 2 ibt2. Now I’ll need to build another box for 3dof…

btw I tested the rig last night in aserto corsa. It’s so much better!! Rod feed back is so much more detail without the degree float I had before. It feels like I just installed new tight suspension in my virtual car .
The racing was intense and fatiguing!

Hi @Frantik, the motor are 250w, 75 rpm, 24v and where being sold for 72 €.

Unfortunately the seller is a kind of a scammer in Amazon, they sell stuff and after marking the items as shipped they say that they will not be able to deliver and cancel, I already have my money back, so I just lost my time and hope to get motors at an accessible price.

There is a legit seller that sells the same motor for 120 €, so just for the motors I would have to pay 360 € .

amazon.es:

/gp/product/B08CD9DGV4?ie=UTF8&linkCode=sl1&tag=sckgaming0a-21&linkId=92593af793eb9e6d100f9539d7205036&language=es_ES&ref_=as_li_ss_tl

Any thoughts regarding this motor? It is being used by another sim rig builder

My box inspiration came from this video: , but using wood or mdf.

So I will build something for a 3DOF,even if I don't buy the 3 motors.

Still haven't though of wind simulation.

I already have the seat, it's an old sparco for the great price of 0 €.

I'm happy that wood is not harming the dynamic of your rig

Well, since the last time I posted, I tried to buy the wheel chair motors on amazon from 3 different sellers. All scammers... shameful, Amazon used to be a safer place.

I'm now trying to buy from a seller that has its items shipped by Amazon, lets's see how this ends

Since I've got all the electronics, I decided to plan the brain box





What do you think @Frantik?
The input power is on the right side (its a standard ICE like we use in the PC power supplies) with a switch.
3x 24v power supplies from Meanwell.
3 motor controllers (BTS7960 43A)
Arduino uno R3
And the 2 fans are artic fans that I've got from my last pc built.
Air is pushed in from the side and pushed out from the top.
For the connection to the motors I will use standard IEC male sockets (I might use some smaller for this, I think a smaller electric plug should be suficient) and for the signal from the AS5600 I will use xlr connectors (mic sockets 3 pin).

If you can see anything that you think is a big no no, just let me know.

Thanks,
Luís Pinho

Looks good Luis. I dont know if i can give much advise since im new to this too.

I did a watts test on my 2dof to see if the power supply had enough capacity for the third motor.

At the wall my 50a 600watt PSU was only drawing 300-360Watts peak. Thats with Simtools settings @ max PWM on both motors. So one power supply is enough for 3dof by a reasonable margin.

Also... i know why your Power steering motor didnt work... It must have been brushless power steering.
I made the same error with the 3rd unit i purchased. I had a failed test last week. I was surprised to discover 3wires to the motor. The prius only had 2 wires.
And a google search found 3 wire DC motors are brushless. So not all units will work. They need to be Brushed power steering motors.
Ill need to go back to the wreckers and get another unit. I found a list of units that will work.

• 2004-2009 Toyota Prius
• 2009-2013 Toyota Corolla
• 2006-2011 Toyota Yaris – (With ABS)
• 2007-2009 Nissan Versa
• 2009-2012 Nissan Cube

In terms of power supplies, and since they aren't very expensive I always prefer to overshoot it (same
rational I use in all my PC builds).

I really thought that all the motors would be consuming much more energy, that is a good piece of information.

Yep, my motor had 3 wires, I'm now glad I didn't try to buy any other random motors just waiting for them to work.

I ordered 3 wheelchair motors from Amazon, the 3 first sellers were scammers, but the 4th one seems to be legit, at least the shipping is done by Amazon, and their address exists somewhere in China.

While writing this it seems that the shipping number is valid and the motors may arrive either today or tomorrow.

If they arrive, I will finally be able to set up the electronics.

Did you go through using the AS5600? Was removing the two components from the board, enough to get the range from 0 to 5v?

Thanks for your feedback and I hope to see your build to evolve to 3DOF.

I was thinking about something like (this design is very similar to the design by mikeyearly on youtube):



But since I don't have any VR equipment, it might just be too tall, I might have to reduce its height and length (I don't have large monitors or TVs available).

But one thing at a time, first the motors, then the wood work

The wheelchair motors have arrived, I will try them today to check if everything works

Yes i had them working perfectly within simtools. I just havent been motivated to mount them to the rig. since the hall pots arrived are where an easy replacement. Ill probably end up using those As5600 on diy flight stick or wait if i build Mk2 motion rig.

Your design looks great! i recognised it from Mikes youtube video.

Regarding the brushless power steering... i think i could still use that motor in a DIY forcefeed back wheel. apparently the diy boards can operate brushless motors with special drivers.

Sure, if it's already working, why fix it

I will still try to use the AS5600, the reference that I got for the hall pots was 35 € each (at amazon) do you have a cheaper reference in ali express or some other site? (if you find something cheap that works, please let me know .

I will have to go a different path from yours, my motors don't have a "rear" shaft, just a front one, so, my design will have to be different, already saw a lot of users using a set of wheels with a belt and then placing the hall sensor beside the shaft.

I may have to change the initial design inspired by the great design by mikeyearly. He uses VR so, he is able to lower the top part where the wheel is placed and his sitting position (making it look like a F1 seating position), because he doesn't need to have clear path to the monitors. I already lower my wheel support but to make the build compatible with most of the monitor stands or tables I must lower the top part a bit more.

That's still a few weeks away

I hope to be able to mount the universal joint (my press is too week) and start the testing of the electronics with AS5600 or some hall pots cheaper than 15 €

From what I have read, the windshield wiper motors in most of the build, don't have enough torque to work correctly, they will either heat up or shacking.
I never tried them but there are some builds with that motors, people eventually changed them to "stronger" motors, but there are several POCs with those motors.

Hope I could help,
Luís Pinho