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Zeratall
09-07-2018, 22:40
Just finished my diy build, this game in VR combined with motion is INSANE!!!

https://youtu.be/Rg9vYtkrmaw

Zaskarspants
10-07-2018, 10:36
DIY? Sounds interesting. Can you post some details / pics / cost to make?

Olijke Poffer
10-07-2018, 10:43
I’m curious myself..

Maskmagog
10-07-2018, 11:21
That's awesome! And, it actually seems doable. I'll write it on my wish list!

Zeratall
10-07-2018, 11:52
DIY? Sounds interesting. Can you post some details / pics / cost to make?

Sure no problem, it was a little more work than I thought originally but totally worth it, the level of immersion is insane, you can feel gear shifts, curbs, camber changed etc, it's amazing.

Here is a picture of the rig, and rhen I'll post on materials and cost to make.
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Zeratall
10-07-2018, 11:57
Total cost was right around $500. You could get away with cheaper if you used smaller motors and used parts, but I went with overkill on the motors because I want snappy response and the things to last a long time (less heat).

In the picture above you can see the basic mechanical design is my chair is connected to some Mdf, which is connected to the base via a Universal joint. The back of the mdf is connected to two push roads which are connected to my motors. The distance from the center of gravity (chair) to the pushrods is very short because I have powerful motors and wanted the rig to be somewhat compact. If you used wiper modes you could utilize a over the shoulder design to get more mechanical leverage.

The pc receives udp data from the game and then translates the udp into pwm for the motors. This is accomplished by two pieces of software, simtools which runs on the pc, and SMC3 which is freeware that runs on the arduino.

Zeratall
10-07-2018, 12:07
List of materials

Arduino Uno R3 (qt 1, control board)
https://www.amazon.com/Arduino-Uno-R3-Microcontroller-A000066/dp/B008GRTSV6/ref=mp_s_a_1_3?ie=UTF8&qid=1531223931&sr=8-3&pi=AC_SX236_SY340_QL65&keywords=Arduino+uno&dpPl=1&dpID=61GN8biQEHL&ref=plSrch

Sparkfun Motor Monster (qt 2, motor controller)
https://www.sparkfun.com/products/10182

50:1 60Nm 80 rpm 12v motors (qt 2)
https://m.ebay.com/itm/GEAR-MOTOR-12-VOLT-GREAT-FOR-SAWMILL-CRAB-POT-PULL-FEED-SIMULATOR-75-80RPM-50-1-/371596157992

Universal Joint
Mounts (qt 2)
https://www.amazon.com/dp/B00IVQPU5A/ref=cm_sw_r_cp_apa_OckrBbKD4ACYC

Spicer 5-153X U-Joint Kit (qt 1) https://www.amazon.com/dp/B000CKN762/ref=cm_sw_r_cp_apa_QdkrBbNVYJ21E

Eyeboot 12V 50A DC Universal Regulated Switching Power Supply 600w (qt 2) https://www.amazon.com/dp/B00YRIRRS4/ref=cm_sw_r_cp_apa_3ekrBbN69CKER

mr_belowski
10-07-2018, 13:44
so do the wheel and pedals move with the seat, or are they stationary?

Olijke Poffer
10-07-2018, 13:49
so do the wheel and pedals move with the seat, or are they stationary?

as far as I see on youtube, only the seat is moving. all the rest is stationary.

mr_belowski
10-07-2018, 13:52
yeah, seems that way. I would have thought you'd want the wheel and pedals to move with the rest of the rig, and also the Rift tracking camera

Zeratall
10-07-2018, 14:05
So yes and no, essentially it comes down to budget there are basically two designs of motion for racing the seat mover (my rig) and the rig mover (pedals and seat move).

The both achieve the same effect, especially in VR. However the seat mover allows you to get away with cheaper components because a rig mover to achieve the same respoviness you want in a racing rig you need industrial size motors. This is because a rig mover needs to move up to 25 degrees in all axis to achieve the same effect.

With a seat mover you also feel the tension in your wrists and legs which really simulate g forces quite nicely. It's truly a great experience, there is a better write up on the differences for each design in the diy motion community here is the post.



https://www.xsimulator.net/community/faq/full-frame-vs-seat-shaker-designs-which-is-better.213/

R-VR Closet
17-07-2018, 10:28
Just finished my diy build, this game in VR combined with motion is INSANE!!!

https://youtu.be/Rg9vYtkrmaw
Awesome, and great build!
Sweet when you have the knowledge to make something yourself!!

I have the Next Level Racing V3 myself, and as you say, motion in combination with VR is Awesome!!! :triumphant:



yeah, seems that way. I would have thought you'd want the wheel and pedals to move with the rest of the rig, and also the Rift tracking camera
If you think about it when driving your real car, the g forces mostly work on your body of mass, that is your buttom and upper body. So you actually get a bit distorted to your steering wheel in your real car when driving as well, just like the feeling in a seat mover. :)
But it's important to set up the motion properly, and don't have it set up to high, it should only trick your brain that you are being moved by the G forces, and not throw you around as a rag doll.

thomasjohansen
17-08-2018, 11:51
do you have the time and be interested to share some more closeups of the motors, joints and how the seatplate i mounted in the front?

Also somehow showing how much/little the motor moves the joints up and down?

Realy a interesting project.... great work

Zeratall
20-08-2018, 06:02
do you have the time and be interested to share some more closeups of the motors, joints and how the seatplate i mounted in the front?

Also somehow showing how much/little the motor moves the joints up and down?

Realy a interesting project.... great work

Thank you, yeah I don't mind at all. Main reason I did this project is because I wanted motion but couldn't afford a off the shelf solution, this build cost me about $500 and feels great, the motors are 60Nm each so they are very snappy. Feeling gear changes and what not is incredible.