# Title Team Members TA Documents Sponsor
30 Amphibious Spherical Explorer
Area Award: Controls
Junhao Su
Kaiwen Chen
Zhong Tan
Luke Wendt design_document0.pdf
The amphibious spherical explorer (ASE) our team is building is mainly for outdoor adventure. The ASE will have no difficulty traveling in water, swamp, dessert, and land due to its spherical shape and pendulum driven principle. Comparing to most robots, ASE will be more versatile since it could travel under most circumstances. As for the other spherical robots, ASE is more adaptable because of its flexible yet enduring shell and at the same time we are aiming to design a better control system to solve the balance issue.

The ASE will be implemented using dual-actuator design consisting of one DC motor and one Servo motor, magnetic encoder, gyroscope, micro-controller, WIFI chip and etc. Specifically, we have decided to build this to be a general-purpose robotic platform as we are planning to leave an I2C bus to interface corresponding interchangeable modules designed for diverse tasks and various usages. The control signal will be sent from PC to the explorer, and the data collected by the task module are transmitted back to the users for debugging. The entire communication process will be accomplished through WIFI.

Our team members have had fair amount of experience in Embedded programming & Control system design, Mechanical CAD, and PCB design which will be efficient through the project building process.

Team members:
Kaiwen Chen (kchen70)
Zhong Tan (zmtan2)
Junhao Su (jsu10)

RFI Detector

Jamie Brunskill, Tyler Shaw, Kyle Stevens

RFI Detector

Featured Project

Problem Statement:

Radio frequency interference from cell phones disrupts measurements at the radio observatory in Arecibo, Puerto Rico. Many visitors do not comply when asked to turn their phones off or put them in airplane mode.


We are planning to design a handheld device that will be able to detect radio frequency interference from cell phones from approximately one meter away. This will allow someone to determine if a phone has been turned off or is in airplane mode.

The device will feature an RF front end consisting of antennas, filters, and matching networks. Multiple receiver chains may be used for different bands if necessary. They will feed into a detection circuit that will determine if the power within a given band is above a certain threshold. This information will be sent to a microcontroller that will provide visual/audible user feedback.

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