The Posture Pedometer Cummerbund

Team Tito’s BurritosKelly HanKevin VoKyle Mauer (Team Lead)Dr. Aziz Inan ( Faculty Advisor)Srija Pidaparthy (Industry Advisor)Dr. Deborah Munro (Client)Dr. Andrew Nuxoll (Instructor)

The Posture Pedometer Cummerbund

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The Posture Pedometer CummerbundAverage number of steps per day (spd)

“Good Health” = 10,000 spd“Sedentary” < 5000 spdAustralia

9,695 spdSwitzerland

9,650 spdJapan

7,168 spdAmerica

5,117 spd

Top Level

ComponentsFlex Sensor – Input for posture

Tilt Switch – Input for pedometer

Arduino – Processor

Vibrating Motor – Output for posture

LCD Readout – Output for pedometer

Components – Flex SensorUni-directional Bend Sensor

Resistance decreases as device is bentOften connected in series with a

capacitor to influence timing

Available in multiple ohm ratingsNo selection yet

Components – Tilt SwitchMercury switch influenced by motion

and gravity

Many practical applicationsRoll sensingFall alarmingFuzes

Components – ArduinoDIY Microcontroller

14 digital I/O pins, 6 analog I/O pins, 16 MHz, 5 Volt operating voltage

USB, AC adaptor, or battery operated

“Shields” for easy compatibility

Easy to use softwareSimilar to Java

Components – Vibration MotorFound in all cell phones, game

controllers, etc.

2 – 3.6V operating range

Plan to integrate 2 – 4 of these for cummerbund

Components – LCD Readout Only Arduino shield we will use

Keypad for manual reset

16x2 LCD white character, blue backlight

Only uses 2 pins of the microcontroller

Piecing It TogetherFive components all need to work

independently of each other, yet all are integrated Also integrated with the human body

Arduino is the right tool, yet we’ve never used a microcontroller

SolutionStart earlyStay ahead of schedule

Decisions and RisksTo MOSIS or not to MOSIS?

Microcontroller suited our needs bestSacrificed experience for easy integration

and customization

Did we take on too much?Added functionality of the pedometer

Adds an additional interaction with the human body and additional components

Bigger budgetBroader audience outweighs extra

potential for failure

ScheduleDocumentation and Presentations

Design (Nov. 2)Final Report (Mar. 22)Founder’s Day (Apr. 9)

First integration of flex sensor and vibration motors (Nov. 14)

First integration of tilt switch and LCD readout (Nov. 30)

Spring – Assemble cummerbund, calibrate, test, tweak

Go Team Tito’sThe Posture Pedometer Cummerbund

5 componentsArduino MicrocontrollerMarketable100k entrepreneur challenge?

Referenceshttp://well.blogs.nytimes.com/2010/10/

19/the-pedometer-test-americans-take-fewer-steps/

http://www.droboticsonline.com/index.php/arduino-lcd-keypad-shield.html

https://www.sparkfun.com/products/8449

http://arduino.cc/en/Main/ArduinoBoardUno