A 16 TPI lead screw advances the carriage 1/16 of an inch with each rotation. I screwed up counting crank turns enough times to make me think about automating that process with my new found Arduino skills. It was, I think, my second Arduino project. I won’t post the code as it is really awful, but it does work.
My automation started with obtaining and modifying a motor assembly. It had an Acme threaded shaft about 6 inches long. The worm gear drive motor from All Electronics (DCM-697), was made for actuating automobile power seats. I sawed the shroud off the connector housing so I could use standard push on terminals. The mounting base is a bit of hardwood flooring rounded out to fit the motor and hose clamped on. I can loosen the clamps and slide the motor to adjust the chain.
See the post for the electronics used and how well it works.
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