Iron Man Arc Reator with Gemma MO and LED Rings

This project is a 3D printed Iron Man Arc Reactor. It uses an Adafruit Gemma MO to run two WS2812 LED rings. It can be powered from either USB, or a lithium battery. There is a case in the back that holds the battery and Gemma MO making it fully portable. There is a button on the back that will cycle though three different patterns and turn off the LEDs.

The 3D parts where remixed from an existing project by Aelkaim. I basically added in the case and lid that holds the Gemma MO and battery.

Print all parts at 95% scale to work with the parts I link to below. I had to do this to fit the large LED ring. If you get different parts you may need to adjust the scale.

Adafruit Gemma MO
24 Bit LED WS2812 Ring
16 Bit LED WS2812 Ring
Button
Spray Paint (Metallic Gold, Metallic Silver,"Hammered")
Copper Wire 24 Gauge (Ace Hardware)
3 X M3 20mm screws
2 X M3 8mm screws


If not running from a USB power source:

Tiny Lithium Battery
Lithium Battery charger (The Gemma MO will not charge the battery)

3D printed parts on Thingiverse

Print out these parts in Transparent or Glow in the Dark PLA
01_Crystal_Ring
02_Crystal_Bottom_MO_Holder
03_Crystal_Lid
04_Crystal_Top

Print out these parts in ABS (I preferred this stronger material because the PLA kept breaking when I screwed the parts together)

05_Upper_Grid
06_Lower_Grid_Caps ( Printed with a Raft to keep the tabs from breaking off when I removed them from the printer. )

Spray paint the parts your desired colors.

Solder three wires on the large LED ring (V++, GND, DIN) and place it into the Crystal Ring:

Place the caps on the ring, then wrap the copper wire around the caps. Don't wrap the copper wire too thick or the lower grid will not fit later if you do.

 Next, solder three wires on the smaller 16 LED ring:

Use the three 3M X 20mm screws to screw the Upper Lid into the Lower Grid and Crystal Top. Keep the screws flush with the backside of the Crystal top:

Flip the it over, and place the small LED ring in the Crystal Top:

Place the Crystal_Bottom_MO_Holder on top of the small LED ring.Make sure the wires from the LED are pulled through the hole. Line up the posts on the Crystal Bottom and finish screwing it it:

 Now its time to solder all the wires to the Gemma MO.

24 LED Ring
LED Ground  > Gemma Ground
LED V++ > Gemma Vout
LED Di  > Gemma D1*

16 LED Ring
LED Ground > Gemma Ground
LED V++ > Gemma Vout
LED Di > Gemma D0*

*make these solders on top so the screws can fit into the holes to mount the Gemma later.

Button
For the button, pull the wires through the top of the lid first before soldering the button. Once the button is soldered, pop it into the holes on the lid.
Prong1 > Gemma Ground
Prong2 > Gemma D2

Use two 3M X 8mm screws to mount the Gemma into the two posts in the case. Plug in and tuck the lipo battery in and close the lid.

To program the Gemma Mo, follow the instructions on Adafruit to get it set up with Arduino IDE and appropriate libraries. Follow steps 1,2 and 3 from this tutorial to do so.

Upload the following sketch from my github to program the two LED rings.