Digital Indexer V2
Tragically my faithful DIY digital indexer died on me, but it proved the concept and was due for an upgrade.
Improvements:
Added a Sherline bed under the headstock to be able to use a tailstock for support
Increased belt gear ratio (from 60/20 to 120/15)
Mounted on a 3/4” fixture plate for stiffness
Added diagonal stiffener to headstock
Added dedicated bearing to help offload lateral force on stepper motor
Improved electrical packaging, more modularization with connectors
Fully sealed box to prevent debris ingress
Added zero-adjust software mode, to allow dialing in on an existing gear tooth
Added continuous rotation mode, up to ~20 RPM
Added port for accessory switch (future automatic index with bed rewind)