# Title Team Members TA Documents Sponsor
12 Hands-free DJ
Jie Du
Ningkai Wu
Yifei Teng
Jacob Bryan design_review
In a party, the DJ is the guy responsible for supplying everyone an endless stream of entertaining music. But we all know he deeply wants to join the party! So we’ll build a remote gesture controlled DJ console that every DJ can take into the action.

Formal description: Our system comprises two parts,
1. A compact device that straps to one’s hand and collects gesture information. The gesture can be used to navigate a playlist, change various effects, manipulate voice recorded from a microphone etc.
2. A phone app that implements the various signal processing functions and outputs the music. The app is driven by gesture data from the embedded device.

To send gesture data from the device to the app, we use the Bluetooth Low Energy protocol. The embedded device will contain a battery, an accelerometer, a gyroscope, a magnetometer, a barometer, a microphone, and a few buttons for testing. It fuses sensor data to estimate the pose of the hand, in the form of orientation and change in height. The microphone can detect one-shot events such as snapping a finger. We will define a custom protocol to stream these events along with continuously changing gesture data to the phone, which will make use of these data to perform signal processing tasks. In addition, the phone will record the user’s voice through a microphone and mix it into the final audio. The microchip on the embedded device will need to be reasonably powerful to perform sensor fusion and at the same time monitoring the microphone for the characteristic sound of finger snapping.

Here is a list of functionalities we propose (non exhaustive):
1. Vocoder to change the texture of one’s voice.
2. Pitch shifting
3. Looping at the snap of a finger (background beatboxing?)
4. Reverb/Chorus
5. Switching background music, or advancing to the next item in a playlist
6. Pause/Resume
7. Wah-wah effect
8. One-shot sound effect (laugh track etc.)

For the sensors we plan to use the MPU-9250, and for the microcontroller we plan to use the LPC1768 Cortex-M3 chip. Of course there will be relevant ADC and regulator circuits for the microphone and battery as well.

Logic Circuit Teaching Board

Younas Abdul Salam, Andrzej Borzecki, David Lee

Featured Project

Partners: Younas Abdul Salam, Andrzej Borzecki, David Lee

The proposal our group has is of creating a board that will be able to teach students about logic circuits hands on. The project will consist of a board and different pieces that represent gates. The board will be used to plug in the pieces and provide power to the internal circuitry of the pieces. The pieces will have a gate and LEDs inside, which will be used to represent the logic at the different terminals.

By plugging in and combining gates, students will be able to see the actual effect on logic from the different combinations that they make. To add to it, we will add a truth table that can be used to represent inputs and outputs required, for example, for a class project or challenge. The board will be able to read the truth table and determine whether the logic the student has created is correct.

This board can act as a great learning source for students to understand the working of logic circuits. It can be helpful in teaching logic design to students in high schools who are interested in pursuing a degree in Electrical Engineering.

Please comment on whether the project is good enough to be approved, and if there are any suggestions.

Thank you