Smart Mat Alarm Clock

Alarm clock on smartphone that is turned off only by standing on a pressure sensitive mat for 10 minutes

Summary

• This project had 3 different pieces
  • The smart mat
    • Pressure sensitive mat that acts as button of sorts - when stepped on, its resistance drops to nearly zero and allows current to flow through.
    • Raspberry Pi Zero W that runs a python script which sends HTTP requests to the API hosted on my server
      • Sends periodic "heartbeat" POST request every 30 seconds
      • Sends POST request whenever the state of that mat changes
      • Has ghosting/accidental step off prevention - mat's state must change for >5 seconds before POST request gets send to API
  • The alarm clock software and automation on my phone
    • "Wake me up!" Android app provides the alarms that are monitored and triggered by "Tasker"
    • "Tasker" Android app monitors and triggers alarms provided "Wake me up!"
    • The Tasker app is where all of the logic lives:
      • Request current state of the mat (stood on / not stood on) every minute
      • If mat is not being stood on, retrigger the alarm and reset the minutes stood on counter
      • If 10 consecutive iterations (each 1 minute long) occur where the mat is stood on, then disable the alarm
  • The public API hosted on my server
    • Node.Js with Express
    • Receives the mat's current state and filters out false positives

Project Metadata

Project Status : Archived
Project Progress : Completed
Project dates : Dec '21 - March '22