Arduino digital read out (DRO)? Answered
I'm wanting to create a digital readout for my tablesaw fence.
I see a lot of tutorials about using ultrasonic, but I'm concerned about:
1) interference from tool noise
2) whether it would be accurate enough
Concerning accuracy, I need at least +/- 1/64" (0.4mm). I mean, if it isn't at least as accurate as a lousy ruler taped to the table, why even do it, right?
I like the accuracy, but they don't seem to do so good over relatively short distances. Since I need 0-4 feet (0-1m), this still seems like the wrong technology.
Any other ideas? How would you go about this?