Hi Chris, I've purchased all the parts to upgrade my AR2 to AR3 but have run into a issue right at the start. Your AR3 Robot Manuel shows additional mounting holes for the encoders on the back of the steppers. My steppers do not have additional mounting holes in the back. I'm assuming that I need to drill/tap these myself? I don't see anywhere in the instructions where it directs me to do this... I'm also confused on the length of the shaft out the back... mine all seem short. The instructions included with the encoder are pretty basic and do not really help to solve this issue.
Thanks!
Here is a picture of my stepper for reference. I just ordered the steppers from stepperonline a while back for the AR2 robot.
Oh, I think I figured out the answer to my own question. I didn't realize that the AR3 upgrade required all new steppers... :(
Hello, yes the AR3 motors kit from stepper online have dual shaft motors and mounting holes for the encoders. I apologize if there was any confusion.