There are many options for a 3D printer's bed sensor and even more misconceptions about what they can and should do. So after a ton of testing with a custombuilt precision test apparatus (TM), 9 myths about these sensors have been examined and we got a ton of data about how precise each one can be!

M8, 2mm inductive sensor (5V) http://s.click.aliexpress.com/e/UnYVZFe
M12, 4mm inductive sensor http://s.click.aliexpress.com/e/e6QJqn6
M16, 8mm inductive sensor http://s.click.aliexpress.com/e/fuVJu3F
M16, adjustable distance capacitive sensor http://s.click.aliexpress.com/e/YfIQFie
M16, 20mm capacitive sensor http://s.click.aliexpress.com/e/ujEuvZf
David Crocker's IR sensor http://www.escher3d.com/
SHARP analog sensor http://s.click.aliexpress.com/e/mEMnaQF
Microswiches http://s.click.aliexpress.com/e/2z3Njm2
BLTouch http://geni.us/BLTouch

All my video and editing gear https://toms3d.org/mygear


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