Piezo Based Visitor Sensing Welcome Mat

A detailed overview of the Piezo Based Visitor Sensing Welcome Mat Project.

Single Cycle MIPS Processor

Project Overview

Utilizing resources from Cornell Maker Club, I designed a smart doormat that would notify me when any guest / visitor steps on the doormat. This innovative doormat operates using a 555 timer IC and a piezoelectric sensor, working in tandem with basic electronic components such as resistors, capacitors, diodes, and transistors. These components collectively relay a signal whenever someone steps on the mat. The piezoelectric sensors leverage the piezoelectric effect to measure force and acceleration, converting this into electrical signals. These signals activate a buzzer, alerting the user when someone steps on the mat. Ideally, the buzzer is placed close to the owner for immediate notification.

Single Cycle MIPS Processor Circuitry

Equipped with a built-in piezoelectric sensor, the mat can continuously monitor pressure changes, detecting when someone or something is standing or sitting on it. I plan to test the mat's responsiveness to various subjects, such as cats, dogs, Roombas, and packages left outside, to see if they trigger the alarm. If you trust me with your cat for testing, please reach out.

Note: This project was primarily tested in a 12 x 20 sq ft dorm room. I have yet to explore potential limitations when scaling for larger rooms or spaces. If time permits, I intend to revisit and enhance this project in the near future.

Skills

  • Electronic Circuit Design
  • Sensor Integration
  • Signal Processing
  • Embedded Systems
  • Project Testing and Refinement
  • Verilog Programming
  • Assembly Language
  • FPGA Programming:
  • Digital Logic Design:
  • Computer Architecture:
  • Hardware Simulation and Testing