Homing and kinematics sorted.
This is my open source tripod kinematics cable printer.
Full build log, software/hardware sources, etc at https://hackaday.io/project/26938
https://www.youtube.com/attribution_link?a=kNGBPeuIubo&u=/watch?v%3Dv1TQYhRJY1Y%26feature%3Dshare
Neat!! Do you have a picture of the very top? I was wondering if the top pulleys are designed to let the cables run parallel w the tension rod. In the video, they don’t look parallel but not sure. If not parallel, wouldn’t that introduce challenges keeping the movement predictable? There should be a point in the tension rod that is always centered in x & y plane… no? Depends on your kinematics, I know. Really cool stuff tho!! Well done
Brook
@Brook_Drumm the position of the push-rod doesn’t significantly affect the positioning of the end effector. It just provides down-force through a swivel. An older photo.
https://hackaday.io/project/26938/gallery#731825437abc23b014296af5284c9bd2
brilliant!
404 page not found. But good to know!
Brook
@Brook_Drumm Hmm. Works for me from both accounts…
Well here is the same image directly. Old photo, the rod is not that long anymore.
It’s not a ‘spike’, it’s a push-rod. The print head is positioned by the 6 lines attached to the end effector, with just down-force provided by the other 3 lines.
missing/deleted image from Google+
Good job daren