ECE 120
tfd2, lchen108
Project Proposal:
Statement of Purpose:
Over the next semester, we will aspire to build a circuit that emulates the sound made by lightsabers in the classic film series Star Wars. The end goal of this is to have a system that interacts with the environment in such a way that it will make sounds that correspond to its displacement in space. We plan to accomplish this by utilizing an Sparkfun Pro Micro and a small speaker. The Pro Micro will control the sounds for the "lightsaber," while the speaker will actually generate the sound for the human ear.
Background Research:
The film series Star Wars have been so successful that the powerful weapon depicted in the films----the lightsaber----has become an icon to the audience. To recreate this device in real life, we need to first build a blade that can produce light with extremely high intensity and second a sound effect producer that makes sounds according to how the user holds the device. Based on what we're looking to build, we did some research and found this website which provides helpful information on building a LED saber with changing sound effect. Here's the website. http://www.allaboutcircuits.com/projects/how-to-build-the-brightest-led-saber-in-the-world/
Design Details:
Block Diagram:
System Overview:
The MPU6050 will measure the object's position, and change in position, in space, allowing for the hum to adjust in real time to the motions of the user. The Arduino will be programmed to respond to the changes from the input of the sensor, as well as outputting sound via the PWM speaker.
Parts:
Controller | |
SparkFun Pro Micro (5V) (Atmel32u4 Arduino) | $15 |
MPU6050 IMU Breakout Board (GY-521) | $5 |
"Digital Volume" Rotary Encoder Switch | $1 |
Audio | |
TPA2005D1 Audio Amp (SparkFun / geeetech) | $7 |
8Ω 2watt speaker, 20-40mm diameter | $2 |
Resistors: 1kΩ, 150Ω, 1/4W (small) | |
Capacitor: 0.68μF electrolytic (anything from 0.47 to 1μF will do, but get as compact as possible) | |
Battery | |
Zippy Compact 1000mAh 3-cell Lipo Pack | $8 |
XT-60 Connector | $1 |
--or-- | |
Turnigy 1000mAh 3S 20C 3-cell Lipo Pack | $8 |
Male JST Battery Pigtail | $1 |
Hilt | |
20mm (3/4") PVC Compression Pipe Coupler (with rubber o-rings and screw-ends) | $10 |
32mm (1 1/4") PVC Pipe (a 1m length is plenty) | $2 |
32mm (1 1/4") PVC End-cap (get a couple) | $2 |
32mm (1 1/4") PVC Pipe Connector (two or three of them) | $4 |
Reference
[1]J. Lee, "How to Build the Brightest LED Saber in the World", Allaboutcircuits.com, 2016. [Online]. Available: http://www.allaboutcircuits.com/projects/how-to-build-the-brightest-led-saber-in-the-world/. [Accessed: 24- Feb- 2017].