You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Electrical Engineering<br />
Roverarm<br />
Ava Kim, Xinran Gao, Cornelia Wang<br />
Advisor: John Kymissis<br />
Roverarm is a IR sensor based self navigating rover with a manually maneuverable robotic arm.<br />
Inspired by a solution to messy pets, a custom powered mechanical arm is mounted on a custom<br />
built rover that has two modes: automatic and manual. Automatic mode uses IR sensing<br />
technology to pick up IR signals emitting from a photodiode and adjusts its direction to drive<br />
towards it. The peak wavelength emitted by the light source matches the peak sensitivity of the<br />
photodiode at 940nm. Hence, it will follow a pet wearing a collar with a diode in it for instance<br />
without human interference, avoiding obstacles using the ultrasonic sensor. The motors receive<br />
the signals from the sensors and the motor driver driven by the I2C communication protocol<br />
increases the voltage and current from the board and drives the actual motors. If the owner<br />
would like to pick something up manually, they can engage manual mode via the IR remote<br />
controller to stop or adjust the car’s position and then engage the mechanical arm to pick up any<br />
fallen objects.<br />
Keywords: InfraRed Sensor, Arduino, Autonomous, Servo Drivers, I2C Communication<br />
Protocol, Ultrasonic Sensor, Photodiode, Wavelength.<br />
Block Diagram to Breadboard: Implementation of Digital Operations in Analog Guitar<br />
Effects<br />
Tajinder Sunda, Tsolaye Itseoritseetan Ogbemi, Siwanta Thapa<br />
Advisor: Seth Cluett<br />
We aim to design an analog guitar effect pedal in this project. We are basing our design on an<br />
early-phase shifter pedal while adding several of our own upgrades. A guitar effect pedal is an<br />
electronic device that changes how a guitar sounds; different pedals alter the sound differently.<br />
We will be looking at a phase-shifting pedal that amplifies some aspects of the tone and reduces<br />
other aspects. It does this by splitting the given audio signal into two portions and altering one<br />
portion by changing the phase. This creates a rippling effect, the desired tone from a<br />
phase-shifting pedal. We plan to upgrade from an existing model, MXR Phase 90 (very popular<br />
during the 1970s), which consisted of a single speed control knob, by adding a feature to create a<br />
single or double “copy” of the original signal. We plan for each signal copy to be individually<br />
phase-shifted at different frequency bands. We will add a knob for each “copy” to adjust the<br />
phase shift, thus giving the user more options for their desired output.<br />
Key Words: Phaser, frequency bands, pedal<br />
25
Change language