Tutorial my first do-it-yourself 2dof simulator

in this post I will put all the steps for building a cheap do-it-yourself simulator.
at the moment I'm doing some tests using 3d printed pieces just to realize what mistakes I make and modify them, then once I have achieved a good result I will create everything with tubulars and iron sheets.

for now I've got a demolished car seat at a price of €20


then I got 2 wiper motors for €10 each, an internet power supply 12v 30a 360Watt for €27, I already had the Arduino, the H bridges taken from the internet for €24 both..


then I made the arms

and I created a joint made with an oscillating bearing

then I did the first walk test


I also tried everything with the game running

these days I've decided that before spending money since at the moment I already have other expenses, I want to build the first wooden simulator and use the wiper motors. I want to make it in wood not to save money but because it is easier for me to build and modify during construction.
now I have a doubt about two types, I made a quick sketch and I'm undecided whether to do it "type A" or "type B".

already done but unfortunately I can't understand some things, it seems that the calculations are not done well but surely it's me who doesn't know how to use it!
however I believe that it is based on the formulas of the levers and I believe that in the end the more the force is exerted away from the central fulcrum and the less force is needed but logically the further I move away the more the movement decreases, not knowing the values of the motors I use I think The only way is to try and do some practical tests.

Let's start doing things a little better..
I printed a base for the electronics prearranging it with 4 holes and then fixing it in a box with a cooling system.

redesigned motor brackets with reinforcement and printed with 100% filling, surely 2 iron brackets would be much better but I'm pretty sure that made like this they can hold, then I'll think about the improvements when the first prototype I see that it works well but now I'll just keep the budget as low as possible.

Upper part where the seat and pedals will be fixed.

Also done the part below, I need to put 4 adjustable feet on the seat and pedals.
I decided to put the engines forward instead of behind because I don't think there is any difference in functioning and so they take up less space.
Today I want to go on with work, I certainly won't be able to finish it because there are still so many things to do, I'm keeping the steering wheel for last so in the meantime I'll think about how to fix it.



what do you think, is an acceptable work coming? I accept criticism.. many of this beautiful group have created masterpieces, I certainly haven't but I'm also trying to save as much as possible and I chose wood as the material because I can work it at home with the tools that I have, maybe if I'm satisfied with the finished work then I'll think about making one in iron with more powerful engines.

I also share with you the things that went wrong.. yesterday I connected all the electronics but everything went wrong, the engines either didn't move or they only did it in one direction. I had done a thousand tests and everything was fine, right now that I was doing the definitive one it's not working! that rages one step forward and three steps back

unfortunately not, I hope it's some connection on arduino, I redid all the connections trying to do a clean job! As soon as I have time I will try to redo everything from scratch. then if the problem occurs again, I will post a video so maybe we can understand what it could be.

ok now it works, yesterday I redid all the connections but the only problem was that the polarity of the motors had to be reversed. I think the movement is too much and I thought of shortening the lever in the engine so the force increases and the movement decreases.

thank you very much for the advice, if I understand correctly you are talking about the degrees between the lever and the right arm? only that to change this I would have to move the motor closer to the attachment of the right arm? I had put it further on because otherwise it can't make the movement but it slams into the engine.. do you have any suggestions on how to do it?

now I understand, it would be enough for me just to increase the length of the arm!

if I move the above attachment point back then it slams me into the engine, I thought that if I stretch out my arm and leave everything where it is it gets better.. I use Smc3 but I don't know how to decrease the displacement.

yes, I believe that if I move it, it will touch the engine with little displacement. If I understood correctly, when the simulator is in a horizontal position, do I put the articulated arm at 90 degrees with respect to the engine lever? then consequently when it rises it increases for example 30 degrees and when it lowers it decreases by another 30 compared to the initial 90 degrees? therefore I will have a minimum of 60 degrees and a maximum of 120 degrees.