Arduino lead screwdriver to partially automate a table saw jog #Arduino

December 15, 2014 Jessica


Thanks to Jim for sending in his project! Check out more info here.

I constructed an Arduino based controller to automate the carriage on my lead screw Box Joint Jig which was originally inspired by Matthias Wandel at Interestingly, Matthias added automated operation by a laptop to his design at the beginning but later removed the function in favor of multiple wooden gear sets. My jig was manual at first and automated later after I kept losing count of the crank turns…

I used an inexpensive DC motor driven with a Polou MD01B H bridge, and added position feedback to the lead screw. This gear drive motor from All Electronics (DCM-697), was intended for actuating automotive 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 align the sprocket and adjust the chain.

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