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 custom-built 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/my-gear

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Standard deviation graph by Jeremy Kemp under CC-BY 2.5

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