# Title Team Members TA Documents Sponsor
13 IR Tracking NERF Sentry Gun
Christian Ryan Alvaro
Emily Dixon
Lauren Klindworth
Channing Philbrick final_paper0.pdf
This project aims to create a deployable NERF sentry gun. This project is unique in the sense of adding an ECE spin to a common toy blaster. While the idea of sentry guns has been done before, what sets this project apart from the others is two-fold. First, its tracking system relies on infrared, versus most other systems that rely on webcams and OpenCV. This leads into the second point, portability. Because of its lighter hardware requirement in tracking, specifically in not needing an entire computer, the system should be redeployable at will.

In terms of hardware, we plan on using a ATMega microcontroller as the brain of the project. For sensing, it'll use an IR receiver from a Wiimote and interface with the microcontroller whenever strong IR beacons are sensed. The microcontroller would command servo motors in a pan-tilt configuration to aim, all before spinning up the flywheel motors and dart pushing motor via transistors connected to the pins of the microcontroller. We'll need to design a control system in order to balance it's responsiveness with it's precision, since fast acquisition may result in overshoot and a missed target from its own momentum, while slower movements may result in missing a shot at the target.

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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