Ultrasonic Ranger/Fall Detector

Embedded system class project

Fall Detector (Senior capstone project)

A comprehensive project [report]

We developed The SafeStep Fall Detection Device, a tool designed to help detect falls. Of course, it’s just a proof of concept :) . Components include:

  1. LCD Display
  2. Potentiometers for adjusting brightness and contrast
  3. System status LED
  4. Accelerometer and Gyroscope
  5. Vibrator
  6. Buzzer
  7. 2x Buttons
  8. Atmega328P Microcontroller

Below is a short demo for the detector. (note: increase volume to hear vibration and buzzing)



Ultrasonic Ranger

Per instructors’ requirements, I’m not allowed to share the source code publicly, which might result in unintended plagiarism. For writeup of the project, please go to class website here.

Brief description:

  1. measure distance up to 4 m
  2. press the button to acquire a new measurement
  3. rotate the rotary encoder to adjust local and remote thresholds
  4. sevor motor acts as a second display for the measurement
  5. green light if measurement > local, red light if measurement < local, blue light if no measurement or out of range
  6. buzzer sounds if measurement < remote

Below is a short demo for the rangefinder.