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 includes 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 the FlthyHP lighting kit, which utilize a 7 LED RGB NeoPixel board. The "stem" is hollow for wiring to pass through. At the end of the stem is a larger hollow area designed to fit a miniature slip ring, to keep kids from twisting R2's wires. This is the slip ring I used: Miniature Slip Ring - 12mm diameter, 6 wires, max 240V @ 2A PRODUCT ID: 775: https://www.adafruit.com/product/775 This is Flthy's Holoprojector LED kit: https://astromech.net/forums/showthread.php?33317-Flthy-s-Holoprojector-LED-Servo-System-Regulator-BC-Approved-100-(9-17)-Open&p=453223#post453223 Find all of Mr. Baddeley's current designs at: https://www.patreon.com/user?u=4294285 Note: The first version of this did not include the threaded end and the mounting holes for the FlthyHP's were too close together due a miscalculation on my part. The second version was originally going to use Flthy's rear plug, however 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, which required minor sanding to clean up and appear to be pretty solid once screwed together, while allowing for them to be unscrewed for maintenance. Depending on the servo holder you use, the stem may need to be lengthened, however that should be trivial to remix. On 18 Aug 2018, I added two additional pieces: 1HoloFrameA - M2 Thin Captive Nuts.stl 1HoloFrameB M2 x 14mm Screws.stl Thin M2 captive nuts can placed in HoloFrameA, which is then glued to the R2 Dome. This allows the HoloFrameB to be removable, should you decide to perform maintenance on your Holos. Hardware: M2 Bolt used: 316 Stainless Steel Thin Hex Nut Super-Corrosion-Resistant, M2 x 0.4 mm Thread, Part Number 93935A305 https://www.mcmaster.com/#93935a305/=1dtrsm5 M2 Screw used: 18-8 Stainless Steel Socket Head Screw M2 x 0.4 mm Thread, 14 mm Long, Part Number 91292A835 https://www.mcmaster.com/#91292a835/=1dtt5gp