Motor, controllers, etc.

Would you point me where can I buy/read about complete whole set except arduino?
I know how to build frame but struggle to find place where can I read which motors with which controllers with which power supply

Is there a post with links? Buyers guide?

Cheers

This is very dependent on your design. The general consensus is that you should review build logs in the forum and mimic someone else's build if you don't have the desire or expertise to deviate from a proven design. The faq section has a lot of details on the different choices available to you that can also help.

For my first 2dof where only the seat moved, I used:
2 ibt
psu 12v 30amp
2 golf 4 wiper motors
For universal cardan joint use the ball joint of a car wheel
To start and learn, it went very well for me.
In this forum you will find all the information you need

I think the first question to ask yourself is what kind of simulator you are looking to build. That will likely drive what kind of motor you might want to look for, which would then determine what kind of controller you need to go with it.

So as an example, if you are planning something smaller like a seat/frame 2 DOF setup, you would probably be looking at something like a wiper motor or general DC gearbox setup. That directs you toward DC motors and the associated controllers/drivers. The next thing you need to determine is what power level you want or can get. Wiper motors are likely going to be in the 100-200W range, larger DC gearmotors might be closer to 300-400W, though can be found smaller as well.

Next you need to look at what voltage motors you want. Ultimately it probably doesn't matter too much whether you go 12V or 24V (going higher than this is possible, but gets a little trickier as it starts limiting your controllers/driver options). It might come down more to what you can get where you live more than anything (12V more common in US, 24V more common in Europe, etc.)

At that point you should have power and voltage selected, which is going to tell you what current capability you are going to need. That is probably what will ultimately drive which power supply and controllers are compatible.

As an example, say you have a 12V 200W wiper motor. That would be ~16A needed for current (ideally you want more as quick moves and direction changes can lead to higher currents). They generally say you want a power supply that is at least 10% higher wattage than your load, so something like a 250-300W supply could be a reasonable fit. Knowing that you need at least 16A of current, you have a lot of options for controllers. Pololu JRKs come in various different current ratings, but top out around 30A (at least last I checked). They will provide probably double that for brief peaks, but it's best not to operate any controller at it's limit all the time. Dimension Engineering has the Sabertooth controllers that come in various sizes up to 60A. I'm not super familiar with the MotoMonster shields for Arduinos, but I think they are supposed to be good for something like 30-40A if I remember right (quality seems to vary greatly with them though). Long story short, as long as the voltage and current rating of the controllers agrees with your motor, you can really use whatever you like best. I started with JRKs and recently swapped to Sabertooths because of future plans that scaled better with them.

However, if you want to build something like a linear actuator sim, you can use just about any motor out there. You can build them with DC motors (notes above apply there), servo motors (typically AC but I think DC ones exist too), stepper motors, etc. Typically servos come with their own drive and power supply and are a matched set, but steppers are a little more universal and take an appropriate driver. You can go brushless DC as well with something like an ODrive or other controller as well. The sky is kind of the limit here.

So long story short, figure out what kind of sim you want to build first and that will help a lot in determining what to look for. At that point it's a lot easier to start searching the forums for advice. That will also drive what sort of motor specs you need to look for. A lever arm style seat/frame mover motor is more about torque and less about speed (though still important), while a motor for a linear actuator is usually more speed dependent, but with a minimum torque requirement.