Since I could not support the Mesa plugin (a grand lack of time), I have not released it. It really needs a good Beta process to perfect it. Meaning as it sits right now, it probably will have quite a few issues. As the plugin was designed to run analog servo systems (does not support steppers), I found that most of my time was spent helping people tune their PID values. And I found myself chasing issues that were not issues with the Mesa plugin (or the Mesa cards) but instead were issues with people not understanding what they were getting into. Not that I wasn't willing to help them through it, but I simply just don't have the time to do so.
The Mesa products are really good! And Mesa deserves to have a plugin that is as good as their products are. It would not be fair to Mesa to release the plugin and have a bunch of unhappy people that can't get their systems up and running just because I don't have the time to do it.
So in order to make the Mesa plugin a reality, it needs to have a better support structure. Meaning more more than just me. It is my hope that some company capable of providing this support will take challenge and make it a reality. Maybe Newfangled Solutions itself will so this. But right now, the Mach 4 development is the priority.
Steve