On 10 April 2018 at 14:36, John Kasunich <jmkasun...@fastmail.fm> wrote:
>> https://photos.app.goo.gl/wyVFvXT2BgT9YSY22 > This one looks very interesting... some kind of capacitive or inductive > encoder? Reflective optical, and not supremely successful. The target there was etched aluminium. (Used the CNC and a marker pen to draw the grid, etched in ferric chloride). But the sensors I used ( https://uk.rs-online.com/web/p/products/7160604/ ) needed a finer grid pitch, so I had some discs laser-cut by a PCB stencil manufacturer: https://photos.app.goo.gl/JfpveU0sy1j9PEJD2 Which worked a bit better, but never 100%. So I gave up on the project. Partly this was because the motor also turned out to be a bit weak. https://photos.app.goo.gl/9ngSqju8U3Q04G722 A CNC-controlled boring head. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
