Used a $10 Harbor Freight digital caliper to build an X Axis DRO for the Atlas 6 inch lathe.
It’s based on an Arduino project called “Caliper Boost” by Rick Sparber – http://rick.sparber.org/ –
He was trying to improve the accuracy of cheap calipers, but his code provides the basis for reading data from the HF caliper. I just needed an absolute (radius) and doubled (diameter) readout for the lathe cross slide.
Making the frame was the biggest milling project yet. It involved a dramatic crash which led to a fun filled hour of getting everything re-aligned. Not recommended.
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