2DOF cheaper simulator

Hi Guys,
Here is my first cheaper seatmover 2DOF project (no commercial use). Many thanks to the X-SIM development team without him this project would not have been possible, thank you also to all the members of the forum who shared their projects, ideas and advices.

Here is the result after 3 weeks of work:


Here are the components purchased:
- Logitech Wingman Formula Force GP steering wheel (2 pedals)


- Child car seat, works with adults and is suitable for F1

- 2 x 12V wiper motors (Chinese brand) with 2 speeds

- Arduino Uno R3


- 2 motor shield IBT_2 ref BTS7960, (max 43A current)


- 2 standard potentiometers 10K 12V/20A


- Power supply


- Gimbal 2DOF

- Threaded rod
- Reinforcement metal angles
- Bolts and nuts

- Kneecaps
- Mounts for motors

- Mounts for potentiometers



It is important to insulate the GND inside the motors, it was not necessary for my project because my structure is not metallic.


Here are the modifications made to the motors to add a rear axle for attaching potentiometers.



Small rigid pipes serve as links between motor and pot. The axle is a simple tip of screwdrivers glued with silicone. The pipes should be inserted slightly forced into the potentiometers and the rear axle of the motors.


A. Electronic

The Arduino code used is the one provided by sirnoname: Arduino open source PID control firmware and hardware. The outputs are therefore the 2 actuators position 1 and 2 (Right & Left)


For connections, here is the diagram:


It is advisable to test the connections before fixing everything (see Software section for setup), the direction of rotation of potentiometers and motors must be reversed. If both rotate in the same direction, simply reverse the poles of the concerned motor.


Motors must be stationary in the dead zone (50%)

B. Construction:

1. The basis:
A wooden plate on which are fixed blocks (wooden), to reinforce the attachment of the gimbal. Use of large screws to solidify the gimbal that will be well solicited



The motor mounts are fixed like this:



A support for potentiometers, make sure that there is no contact between the potentiometer holders and the motor mounts to avoid disturbances from movements


All the electronics are stored in a standard PC power supply box, in output we find only
- The connector for the 2 potentiometers
- Power connections in the 2 motor schield
- Motor connections in the 2 motor schield


Fixing the power supply in the base, adding a switch for emergency stops




The connecting rod system, made from
- 2 long bolts & 2 threaded rods
- Angle brackets
- 6 nuts, 2 brake nuts
- 2 nut connection
- 4 Metal ball joints
- 2 motor metal arm (delivered with the motors)






Completely adjustable according to the width of the main board on which the seat is fixed.


2. The seat, steering wheel and pedals

A long board is used to fix the elements, reinforced by 2 metal angles on the side edges, to avoid bending due to weight and movement.

Several holes are used to adapt the seat position to the center of gravity once seated.

The steering wheel and pedals are fixed like this:




Finally, the system is attached to the gimbal and to the two motors; the whole system is securely tightened by nuts.




Thant's all for this moment, next step is to configure simtools with F1 2020 game

Hello noorbeast

I would like to replay about the torsion twist problem, do you habe any suggestion to how can i eliminate it, using panhard rod or other things, it will be better with diagram, and what are the parts needed ?

Many thanks in advance,
Tayeb,

Thanks

It seems complicated to put a panhard rod in my case, it will be easyer for me with a concrete examples who do that