13. Applications and implications

Final Project Questions to Answer…

What will it do? - A wearable safety device that aims to make the motorcyclist more visible in dark or poor visibility conditions

Who has done what beforehand? - Not certain. There are many many LED light options on the market that are similar to my proposed project…but few that I am aware of that can function ‘intelligently’ and ‘autonomously’ (utilizing sensors and a microprocessor to generate a condition specific output) as an assistant to the device user.

What materials and components will be required? 1. ATTiny45 Microprocessor…$1 - MPU6050 Accelerometer, Gyroscope, Temperature sensor breakout board…$7 - Photo-transistor…$1 (?) - PCB and supporting electronics…$5 (?) - 2500MAh Lithium Ion Battery…$5 (?) - Type C USB Connector…$5 (?) - 70cm Neopixel RGB LED strip…$25 (?) - 2 Servo Motors…$20 (?) - CNC Aluminum structure…$20 (?) - ABS Plastic outer shell…$15 (?) - Neoprene pad…$5 (?) - 2x Nylon Straps and Plastic Buckets…$10 (?)

Where will they come from? - Components will be sourced from online and local retail vendors

How much will it cost? - An itemize list of components will need to be made to get a more accurate estimate - It is my hope that the component costs alone will be less than USD100

What parts and systems will be made? - Device housing, harness mount and harness strap will have to be made from scratch - The control unit will be made from scratch - …Neopixel light arrays and Sensor modules and other electronic ‘vitamins’ will be store bought: MPU6050 (Accel, Gyro, Temp), Photo, humidity, GPS

what processes will be used?

Harness: - CAD design - Laser cutting - Sewing

Housing & Stucture: - CAD design - 3D printing - Vacuum form (?) - Injection molding (?) - Casting (?) - CNC milling (?) - Laser cutting and bending…acrylic lens

Control Unit: - PCB design, milling & stuffing - Microcontroller programming

What tasks need to be completed?

  1. Housing & Harness system Design
    • Physical mock up of housing and harness…testing for size and functionality on the human body
    • Fusion 360 modeling of housing and movement mechanism
    • 3D Print a 50% scale mock up
  2. Critical sensor prototyping and programming
    • Accelerometer INPUT breadboarding
    • Photo sensor INPUT breadboarding
    • Gyro sensor INPUT breadboarding
    • Neopixel OUTPUT breadboarding
    • Servo OUTPUT programming
    • Bluetooth OUTPUT/CONTROL programming
    • …create Input/Output combination prototypes: Photo-Neopixel, Accel-Neopixel, Gyro-Servo,
  3. Mechanical actuation system design, prototyping and programming
    • Decide on servos to use
    • Design wing actuation mechanism utilizing servos
    • 3D print a 100% scale mock up of one wing to test servo mechanism
  4. Coding and programming for input signal gathering and output effect to be flashed to the microprocessor

What other questions need to be answered? - All required parts? - Costs? - Sub-structure production method? - Which processor to use?? ATTiny44/45? ATMega138?

What is the schedule? 1. Sensor prototyping ASAP - Coding/Programming - Device final Design - Production

How will it be evaluated? - Generally, functional success - Are sensor input able to be associated with and correctly taken from desired external world conditions? - Can the input signals be translated to the desired output effect…providing the safety features intended for the device?