I can't get anyone to answer my emails to sales@nexdome.com directly or by the online form.
I have purchased a new in-the-boxe's NexDome 2.2 with full automation (pre-2021) that was never set up. I have set it up without any issues except...
I need a solution to the shutter skipping problem. I have installed and added teflon tape everywhere the shutters slide over or against each other and also the dome. I have replaced the four 80mm wheels on top with 76mm wheels and added washers to center them in the shutter flanges. I have not installed the top retainers. I have tightened the stepper bracket mounting screws and adjusted the slide bearing behind the sprocket.
In short, I have done everything that is recommended in the forums and anywhere else online I can find. The single side drive seems to be unreliable by any normal standard.
Any solutions that I can purchase or modifications that will work with my pre 2021 Dome?
Either the new shutter kit and rotation or an additional left side track and steeper/gearbox mounting bracket so I can add another stepper/gearbox to make my own dual side drive.
Supposedly the driver can drive two motors. You can set the dip switches to the highest current and wire them parallel. However, both motors together could use more current than the driver supplies, but the the driver will not fail as it regulates current using pwm chopping frequency. You cannot pull more than the maximum current than the chopping frequency can provide. It will just lower the torque each motor produces. Because you are driving both sides, the motor current required for eack to drive the shutter will be less anyway.
The only way to drive it faster is to change the firmware to increase the step frequency, change the dip switches of the driver from 1/8 step mode to 1/4 step mode or use a larger sprocket. I changed the sprocket because the smaller 20 tooth sprockets collar bottoms out against the plastic track that holds the chain and the sprocket teeth does not fully engage the chain. Personally, I don't know how anyone with a single side drive is successful with the smaller sprocket. The side benefit of the larger 25 tooth sprocket other than it not slipping is that it increases the speed by the 25%.