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TouchDRO for Sherline, rev 2

With TouchDRO working great with my Sherline mill and lathe for about 6 months now, a few additional features have been added to this second revision of the design:

 

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TouchDRO with Sherline Lathe and Mill

While software is my business’s bread and butter, I sometimes am called upon to do mechanical prototyping. And my table top Sherline lathe and mill are indispensable. I bought the “ultimate machine” shop package about a year ago and after  

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Sherline, TouchDRO : electronics

Not a lot of complexity in designing the electronic interface. The Teensyduino (LC) is small and low-cost ($9) and with the open-source quadrature encoding libraries, reading values from the AMT-102s was trivial. Sending the data to the TouchDRO was  

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