They have some nice modules and I purchased a few of them. The only SDK available on their website is 4.2 and 4.3 beta. Neither are compatible with 4.3.
Its particularly painful because updating to 4.3 is so easy. :wall:
I believe I have a 4.3 Chimp Driver driver somewhere on my system that I wrote and I might even be able to find a 4.3 Little Step driver but I’m not sure if there wasn’t a problem with the code or hardware for the LittleStep (I switched over to using the Stepper Module from GHI as it was a righteous module).