# Thread: Using Opencockpits DC Motors card for Motion

1. ## Using Opencockpits DC Motors card for Motion

Hello everyone,

I am wondering if the Opencockpits DC Motors card can be used with powerful motors for a motion simulator seat.

I am only looking to move 3 motors (Pitch/Bank) five degrees, enough to support, lets say 110KG?

Please let me know if this would be suitable/unsuitable; any advice; experiences, etc.

Thanks very much,

Jack

2. ## Re: Using Opencockpits DC Motors card for Motion

Anyone know if this is possible? I have access to the motors available.

3. ## Re: Using Opencockpits DC Motors card for Motion

Jack

I think that you are coming at this from the wrong direction. To answer the question you need to know what the voltage and current demands are to compare against the OC card - which has a paltry 30volt and 1 amp maximum.

To establish this you need to calculate the "work" involved ie weight x distance and then convert this into torque depending on how your mechanics are arranged. Finally, you need to decide how quickly you wish the seat to move over its length of travel

You can then find a motor with the torque capacity and rotational speed to meet your needs. That will then tell you whether the OC card is suitable

Simples

David

4. ## Re: Using Opencockpits DC Motors card for Motion

Hi David,

The OC Card voltage/ampage outputs don't matter - I have conversion devices that wil ltake care of this for me (I use this when using the USBServos Card).

I have been thinking about these motors... Way to small I know... But just research. High Torque and low speed...

http://www.active-robots.com/product...or-139-1.shtml

Three of these... For pitch and bank (NOT Yaw) - Only looking to move about five degrees (trust me, this is more than enough =P).

5. ## Re: Using Opencockpits DC Motors card for Motion

Hi

I am a little puzzled - if, as you say "The OC Card voltage/ampage outputs don't matter" then why are you asking if the OC card is suitable?. The OC card will certainly control those motors in your link. Presumably you are going to have a central pivot mount for the seat to reduce the load demands on the motors, but why three motors, surely only two are needed unless I am missing something here.

David

6. ## Re: Using Opencockpits DC Motors card for Motion

Three Motors; One for two sides and one at the front (like a triangle).

I was thinking of attatching a drive-screw onto each motor, then allowing this to move up and down. This drive-screw is connected to a platform with whatever seat attatched.

And yes! Interesting link. That site is dedicted to robot parts.

7. ## Re: Using Opencockpits DC Motors card for Motion

Originally Posted by Boeing 747 Flyer
Three Motors; One for two sides and one at the front (like a triangle).
Jack

Ok, up to you, but you only need two motors for 2 dof with a centre pivot to take the weight of the seat and occupant. You can use more motors to shed the load, but this would seriously complicate the sioc programming, probably too far! The drive screw idea is sound, just need to check that the rotation speed/torque of the motor will move the seat quickly enough.

David

8. ## Re: Using Opencockpits DC Motors card for Motion

Hi David,

Just to confirm then... Are you suggesting two motors like this:

Sorry for the basic diagram...

Jack