DIY CNC

Logthor wrote:

 

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My only concern regarding using my parallel port computer with a breakout board is the delay (hence why I was considering the mesa card). Hypothetically, let's say my jitter isn't a problem. Will my experience making chips be the same as with a mesa card? I want to make some pretty complex parts and am concerned that any amount of jitter could make that impossible. I've attached an STL file of a part that I want to make for a friend. Could this be possible using a parallel port, or should I just spring for the more expensive card?
 

The main difference between a parallel port based system and a system with external Step/Dir generation
hardware is the maximum step rate, This speed will be limited by the real time jitter on the parallel port system.

The output hardware does not limit the complexity of the created shapes just the maximum speed.

 

I'm aware. I just was wondering, based upon your knowledge, if it will affect me making that part.

As Peter said,

PCW wrote:

The output hardware does not limit the complexity of the created shapes just the maximum speed.

I suspect however you will find limitations due to the part geometry on any machine.