Timeline for Opto switch for detecting translucent polypropylene
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 18, 2019 at 18:16 | history | edited | D.A.S. | CC BY-SA 4.0 |
added 341 characters in body
|
| Jan 18, 2019 at 18:05 | comment | added | D.A.S. | THis approach is how Pick N place machines work. Except they just locate Fiducial mark and zero offsets. | |
| Jan 18, 2019 at 18:01 | comment | added | D.A.S. | another approach is to use vertical camera with dropping pipette drops synchronized to capture position error at datum and collect in a waste container. Any resolution is possible with cheap cam chips with adjustable focal length (lens ring thread) and diffused reflected background from light source to detect drops synchronized to trigger. Then error correct by computing new work Home position. Move and send G code. then verify. or move until null error then send g code. I use this github.com/Gerritv/Grbl-Panel/wiki with Arduino + CNC shield and Windows app. | |
| Jan 18, 2019 at 17:31 | comment | added | David F. | Thank you for taking the time to help with my problem! The tips are replaced frequently, sometimes more than a couple of times a minute. Cleaning the sensor would add a lot of complexity to the build, but I will keep this solution in mind. | |
| Jan 18, 2019 at 7:33 | history | answered | D.A.S. | CC BY-SA 4.0 |