Working Stargate Mk2

thingiverse

Estimated build time is 112 hours. The entire stargate model consists of 117 separate parts. This model includes additional components to allow movement of the top chevron during dialling sequences. Note: Due to its larger size, this stargate will not fit securely in the SGC base designed for Working Stargate Mk1. Please use the SGC Ramp for Working Stargate Mk1 at http://www.thingiverse.com/thing:1603663. Due to the additional components needed for moving chevrons, space for wires and LEDs is significantly reduced. Surface mount LEDs have been used in this model. Two stepper motors are required for this stargate design. Since these motors face each other, mounting brackets have been included. If you plan to use different-sized motors, simply modify the 'stepper_mount_x2.stl' file without altering the base. Besides the Arduino and Adafruit Motor Shield, there is an optional bracket for additional circuit boards. An extra board has been added to mount resistors and transistors for LEDs. The "x" number at the end of filenames indicates how many times that part should be printed. For example, "gate_1_a_x8.stl" should be printed eight times. There are three types of chevrons available: "chevron_1", a single piece that can be printed as opaque or transparent; "chevron_2", consisting of three pieces ("a" should be printed as opaque and "b" as transparent); and "chevron_3", also made up of three pieces, but dependent on print quality. In my experience, only the "chevron_4_x9.stl", "rail_l_1_x1.stl", and "rail_r_1_x1.stl" require printing supports. Two Arduino scripts are included: "stargate_mk2_full.ino", which includes dialling, calibration, and light display; and "stargate_mk2_dial.ino", which contains only dialling and calibration sequences. Please see the YouTube video for a complete assembly guide at https://youtu.be/6X2FbyxViao. Videos of the Stargate in action can be viewed here: Seven-symbol address for Abydos: https://youtu.be/Kvjv6q3YDGc Eight-symbol address for Asgard homeworld: https://youtu.be/6TiuwvPgPVY Nine-symbol address for Destiny with incorrect ninth symbol: https://youtu.be/Wdfw2u-thgw There are eight videos available on my YouTube playlist at https://www.youtube.com/playlist?list=PLv5wdS9O16OsT9xOpAUaj0T6JiPvgujXB. Edit 15th Jan 2017: Some users have encountered problems slicing the parts, despite all files working in Makerbot Desktop. Files fixed in Slic3r did not always work in other programs or re-imported into Slic3r with errors. Microsoft's 3D Builder (included in Windows 10) unexpectedly resolved this issue. All files have been run through 3D Builder to ensure compatibility across various slicing software. New files are now available for download, reduced in size due to binary format instead of ASCII. Estimated print time assumes standard quality printing with raft on a Makerbot Replicator 5th Generation. Custom Section Electronics: By popular demand, I have compiled an electronics parts list below. Please refer to the reference circuit diagram. Note: Components can be swapped for equivalents; LED and resistor values may need adjustment accordingly. 1 x Arduino 1 x Adafruit Motor/Stepper/Servo Shield for Arduino 2 x Adafruit Stepper motor - NEMA-17 size - 200 steps/rev, 12V 350mA (one stepper could be replaced with a servo) 27 x Kingbright KPT-1608SECK 2.1V 20mA 8 x Broadcom ASMT-YWB1-NGJB2 - 3.2V 60mA 1 x Lumex SLX-LX5093UWC/C - 3.4V 23mA 10 x BC548 NPN transistor 9 x 220 Ohms resistor 8 x 150 Ohms resistor (150R) 1 x 10K Ohms resistor 1 x 10.2 Ohms resistor (10R2) 1 x Photoresistor / light dependent resistor (I used one from the Arduino starter kit)