Halo Reach Energy Sword

Motion Sensitive Energy Sword


Creative Commons Attribution Share Alike

Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags


This project is a work in progress. The original model was used from the Yeggi Halo Energy Sword project: https://www.myminifactory.com/object/halo-energy-sword-3117. All the individual parts were reassembled in blender, then hollowed out and re cut into new parts. The LEDs were assembled and soldered together in a chain. The sheet packing foam was cut to fit the interior of each sword piece, holding the LEDs in place and defusing the light. The audio is controlled by the Adafruit ProTrinkit taking input from a 3 axis accelerometer. When the ProTrinkit sees a change in acceleration, it triggers the sound board to either play a swing or clash sound depending on the magnitude of the change. The LEDs are also controlled by the Pro Trinkit through a simple npn transistor which connects the LEDs to ground when triggered. The device is turned on with a momentary push button. the speaker is powered with a 2.5W amp and is hidden inside the LHCAP and RHCAP hilt parts.

Currently the code works. However, it still needs to be refined. Also all of the sword parts are currently best printed standing up. But this causes the layers to crack if the sword is hit hard from the side. To get around this, the sword parts are currently being re-cut in order to allow for a different print orientation. meaning the layers will go with the length of the sword rather than against it.

LED Test Video:

Materials and methods

- ABS or PLA
- Clear filament for sword parts
- Thin sheet packing foam
- Superglue
- Wires
- Small nuts and bolts
- Adafruit ProTrinkit 5V 16Mhz
- Adafruit 2500mAh Lipo battery
- Adafruit Audio FX Mini Sound Board
- Adafruit USB Lilon/LiPoly charger - v1
- Adafruit Triple Axis Accelerometer - MMA8451
- Adafruit Mono 2.5W Class D Audio Amplifier
- Adafruit Push - Power Switch breakout board
- 8ohm 1W speaker
- 400 Flat top blue LEDs
- Resistors
- npn transistors


  • Placeholder
    Blender Files
    ZIP  –  32 mb
    Version 1 - Dec 06, 2016
  • Placeholder
    Hilt Parts
    ZIP  –  31 mb
    Version 1 - Dec 06, 2016
  • Placeholder
    Sword 8 12 16 V2
    INO  –  6.8 kb
    Version 1 - Dec 08, 2016
  • Placeholder
    Sword Parts
    ZIP  –  37 mb
    Version 1 - Dec 06, 2016
  • Placeholder
    Vid 20160814 163238836
    MP4  –  67 mb
    Version 1 - Dec 06, 2016


Issues are used to track todos, bugs or requests. To get started, you could create an issue.


Fb8f66d76a699e2c17500d6c3902e141?default=blank&size=40Abigail Eades added this to the Fandom collection ago
Mini il 570xn.1343682359 2jz9The 3D printing Guy commented ago

Well done! I highly appreciate the open sharing.

C950f7487b348571ece114b26c8b1f72?default=blank&size=40Travis Williamson added this to the cosplay collection ago
D0b14bcbad5b5a5ec9e798eb72481b5c?default=blank&size=40Jacob Burkett added this to the Collection collection ago
Mini 14344266 1492156437468231 159964575071577609 nAlexander Herbst published this design ago