I have received many requests about the electronics used in the Working Stargate Mk2 model.
The electronics information was not included with the model as I am not an expert in that field, and my circuit may not be the ideal solution.
However to satisfy demand I am making the diagram available for reference purposes only.
Circuit Diagram for Working Stargate Mk2
Q1 – Q10 = BC548
D1x – D9x = 27 x KINGBRIGHT KPT-1608SECK 2.1V 20mA
DCAL1 = 1 x LUMEX SLX-LX5093UWC/C – 3.4V 25mA
DRMP1 – DRMP8 = 8 x BROADCOM ASMT-YWB1-NGJB2 – 3.2V 60mA
R1 – R9 = 9 x 220 Ohms
RCAL1 = LDR
RCAL2 = 10K Ohms
RCAL3 = 10.2 Ohms (10R2)
RRMP1 – RRMP8 = 150 Ohms (150R)
This is the SGC Ramp from the Working Stargate Mk2 designed to fit the Working Stargate Mk1.
If you have already printed the first Working Stargate. Please use this base rather than the one included with the Working Stargate Mk2.
The Working Stargate Mk2 has been uploaded to Thingiverse:1603423.
Please see the youtube video for a complete assembly guide.
Here are a few videos showing the Mk2 Stargate in operation.
3D Printed Working Stargate V2 – Abydos
3D Printed Working Stargate V2 – Asgard
3D Printed Working Stargate V2 – Destiny
3D Printed Working Stargate V2 – Chevron 9 will not lock
If you dial a nine symbol address and don’t use Earth as the ninth symbol the ninth chevron will not lock (as a homage to SGU).
3D Printed Working Stargate V2 – Calibrate
Demonstrating the self calibration program
3D Printed Working Stargate V2 – Light Show
It has LED’s, so why not? I’ve programmed a few light patterns for display purposes.
3D Printed Working Stargate V2 – Slide Show
A slide show of photos taken from various angles.
Success. I have modified the moving parts for the top chevron and it works as intended. The stepper motor in the base is now able to control the chevron.
The attached video shows mostly the whole gate. This is mainly to show the chevron is actually being controlled as part of the dialling sequence.
I’ve used three LED’s in each chevron. This does have the unfortunate effect of blinding the camera and making it hard to see the chevron move. I’ve included a close up of the top chevron as a picture-in-picture to help show the detail.
The top detail piece is thicker by 2mm to accommodate the larger moving parts. I will need to modify the remaining pieces of the gate to give a nice flush finish. The base will also need to adjusted and I want to relocate a few screw fixing holes which became apparent when I fitted the whole gate and base together.
This does mean I’ve missed my original design goal of making the mark 2 gate exactly the same size as the mark 1. However, since it’s only thicker by 2mm. I’m not too far out.
Calibration works by way of an LED and Light Dependent Resistor (LDR). There is a hole in the Pisces symbol (glyph 21), which is almost opposite the Earth symbol (glyph 1). There are corresponding holes in the gate segments that sit into the base and line up with the Pisces symbol when Earth is under the top chevron. The hole is practically invisible due to its small size and rest of the gate being the same colour.
To print this model requires 110 pieces for the gate and 38 for the base. That’s 148 in total.
Note: The below video is 65mb’s in size. Here is a youtube link if you need to view the video in a different format.
All the pieces for the stargate have been printed and assembled. Although the additional gearing for the top chevron can be moved from the base by hand. The stepper motor is unable to budge it.
Also I noticed the stepper motor driving the symbol ring will stutter if the ring and track it rides in are not completely smooth. It’s best to sand down the joints as even a slight lip can cause issues. Trying to take the model apart once glued together isn’t the easiest job.
In good news, the additional pieces for self calibration work as expected. The gate is able to reset to the ‘Earth’ symbol on top for which all dialling calculations are based. The full calibration, which also calculates the steps per symbol takes about four minutes. A short video of the last ten seconds of calibrating are included below for reference.
Since a larger base was required to accommodate two stepper motors, I’ve designed the new base to look more like the ramp from Stargate Command. Some tweaks are required in the design. The base does fit the build plate of the Makerbot 5th gen in one piece, but due to curling I’ve split it into two pieces.
The gate itself is the same size as the original gate I uploaded to Thingiverse in 2013. However there is less room inside the gate due to the additional parts for the moving chevron. For this reason I’ve used surface mount LED’s; a total of 27. They’re a little harder to solder by hand, but not impossible. It also means each chevron is wired back to an output pin on the Arduino rather than having just one output.
The code is written to handle any length address from 1 to 9. See the videos below to see the difference in how the chevrons light up for 7, 8 and 9 symbol addresses. If you dial a nine symbol address and don’t use Earth as the ninth symbol the ninth chevron will not lock (as a homage to SGU).
Note: The below videos are 25-30mb’s in size.
Dialling a seven symbol address (Abydos)
Dialling an eight symbol address (Othala – Asgard homeworld)
Dialling a nine symbol address (Destiny)
Dialling a nine symbol address with the wrong ninth symbol
For those interested. Here’s a quick preview of an upgrade I’m currently working on for the Stargate model.
Released in January 2013. It works to a point that you won’t get a stable wormhole; but that’s only because no one has printed one on another planet yet…
There are thirty one separate files which make up the model. Although some are optional depending on what you want the final model to look like. For instance the chevron can be printed in one piece or several pieces in a mix of transparent and opaque plastics. The pieces were made to fit the Makerbot Cupcake build platform (100x100mm).
The inner ring has a geared edge hidden under the outer edge of the Stargate. Once all the pieces have been glued together, and LED’s fitted if required, the ring can be rotated from a gap in the base of the Stargate.
In December 2014 Thingiverse user Carasibana altered the base to support a stepper motor and Arduino. She also combined the model pieces to print on larger build platforms.
I am very pleased the model worked, having not being able to test it myself at the time. And a thank you to Carasibana for her work with the Arduino.
Thingiverse:39976 Working Stargate by Glitch
Thingiverse:571853 Working Stargate with Arduino Control by Carasibana
YouTube video of 3D Printed working Stargate dialing by Carasibana
Released in December 2012. A highly detailed model of part of the Stargate model.
Note: Unlike the SGU segments. Printing nine of these will not make a complete ring.
Thingiverse:38708 Stargate Chevron
Released in December 2016. The version 2 of the Millennium Falcon has smooth edges rather than stepped edges of the version 1.
The reason for the smooth edges were for people who were able to print in higher quality and needed to slice the model into smaller layers.
Thingiverse:38066 Millennium Falcon V2