Sound Tracking Napkin Bot  

Project Objective

The goal of this project was to design a mobile robot capable of delivering napkins around a table. It combines the mobility of a differential robot cleaner with a standard spring-loaded napkin dispenser. Due to the COVID-19 pandemic, this project was limited in resources and was completed only using standard hand tools.

Design Overview

The NapkinBot is designed to follow the direction of sound. Utilizing two sound sensors and a low pass filter, the robot changes speeds of the front wheels based on audio inputs. When sound is detected above a predefined threshold, NapkinBot simply moves towards the side that sound was detected.

Final Demonstration

The final demonstration shows NapkinBot successfully reaching the person at the table and delivering the napkin as promised. With a bit of encouragement and loud cheering the robot is able to deliver a napkin to anyone at the dinner table.