Threaded Holoprojector, Slip Ring Holder, and Back for Mr. Baddeley's 3D Holoprojector and Flthy's Light Kit

thingiverse

This is a modification of Mr. Baddeley's HoloMain holoprojector to include M40x3 threading and a new rear plug with matching threading, which features a stem for servos to connect to and a holder at the end for a slip ring. The rear plug also includes mounting points designed to fit FlthyHP lighting kit, which utilize a 7 LED RGB NeoPixel board. The "stem" is hollow for wiring to pass through, while the end of the stem has a larger hollow area designed to fit a miniature slip ring, preventing kids from twisting R2's wires. The slip ring used is a Miniature Slip Ring with a diameter of 12mm, accommodating 6 wires and a maximum voltage of 240V at 2A. The product ID is 775 and can be found on Adafruit's website: https://www.adafruit.com/product/775 Flthy's Holoprojector LED kit is also used, which can be accessed through this link: https://astromech.net/forums/showthread.php?33317-Flthy-s-Holoprojector-LED-Servo-System-Regulator-BC-Approved-100-(9-17)-Open&p=453223#post453223 Mr. Baddeley's current designs can be found on Patreon at this URL: https://www.patreon.com/user?u=4294285 Note that the initial version of this did not include the threaded end and the mounting holes for FlthyHP's were too close together due to a miscalculation. The second version was originally going to use Flthy's rear plug, but I was unable to get the small threads to print reliably at low resolution. The current version uses a new rear plug with larger M40x3 threads, requiring minor sanding for cleaning up and appearing solid once screwed together while allowing them to be unscrewed for maintenance. Depending on the servo holder used, the stem may need to be lengthened; however, this should be trivial to remix. On August 18th, two additional pieces were added: HoloFrameA and HoloFrameB. Thin M2 captive nuts can be placed in HoloFrameA, which is then glued to the R2 Dome, allowing HoloFrameB to be removable for maintenance. Hardware used includes a M2 Bolt with a 316 stainless steel thin hex nut, super-corrosion-resistant, with an M2 x 0.4mm thread and part number 93935A305. The M2 screw used is an 18-8 stainless steel socket head screw with an M2 x 0.4mm thread and 14mm length, part number 91292A835. Both parts can be found on McMaster's website at the following URLs: https://www.mcmaster.com/#93935a305/=1dtrsm5 and https://www.mcmaster.com/#91292a835/=1dtt5gp