Author: UrbanAtWork, published on 2015-04-23
Even if you don’t have a Sphero lying around this model can create a fun printable toy.
2015-09-30 UPDATE: Added STL versions in a zipped archive for download.
IF I HAD THE TIME: I would create a custom “top guide”, for the 3 pronged part inside the sphero, for two magnets to sit in and keep the head facing forward. or I would create a weighted piece that replaces Sphero. Maybe someone else wants to take on either challenge (someone without a full time job, kids, and a honey-do-list).
NOTE for perfectionist: I scaled up the base slightly to 74mm which makes the outer diameter of the base a little larger than the original Sphero but it better matches the inner diameter of the original and seems to make the robot move more freely.
This first version requires you to cut the Sphero open and glue a magnet to inner 3 prong top guide.
NOTE: I’ve tried a couple of different magnet combinations and haven’t found the perfect mix or placement. (more detail later)
Also included is a version of the head for resin printers. It is hollow with two drain holes at the bottom.
Some fun testing with the kids:
Built using resources from the Ross School’s Innovation Lab.
Still unsure of the best way to print this and I imagine it will depend on your printer… but I’ve printed the head of this on a Ultimaker 2 in white PLA and had some really nice prints with just a brim. I have tried the half sphere with just a brim but the inner top area was too rough for the Sphero’s tight tolerances and he/she would get stuck.
I have also been able to print it on a Form1+ in white resin with some success but I’m not convinced the quality is worth the trouble in this case.
The trick is printing it and having a really smooth interior so the Sphero can spin freely inside.
Tags: ball_droid, bb-8, bb8, BB_8, driod, droid, Not_R2, R2D2, remix, robot, Ross_school, sphero, sphero_hack, star, starwars, star_wars, wars