10/16/2016

1

Students: Demetrio Vallejo & Scott James

Class Instructor: Professor Paul I-Hai Lin

Faculty Advisor: Professor Hack

Date: December 7, 2012

Project Outline Introduction

Problem Statement/Solution

System Design

Hardware Design

Software Design

Testing

Lessons Learned

Conclusion

10/16/2016

2

Introduction Gear Shifting display intended for a motorcycle

Problem Statement/Solution Most motorcycles do not have shifting mechanisms

due to the added costs

Aftermarket Shifting Mechanisms expensive around $500 and ours will cost roughly $30

Relatively easy to install

Helpful to racers as they want to make sure that they are in the correct gear while going around a corner.

Helpful to know when your in overdrive gear

Helpful to know what gear your in at a stop light

10/16/2016

3

System Design Seven Segment Display

Brighter

Hall Sensors

Reliable

Microcontroller

Voltage Regulator

System Requirements The prototype will sense the gear

shifting up or down.

The prototype shall count up and down

The prototype shall display the correct gear number that Motorcycle is in

10/16/2016

4

System Requirements (Cont.)

System Architecture

Port C RC0 RC1 RC2 RC3 RC4 RC5 RC6 RC7

Cathodes A B C D E F G N/A

10/16/2016

5

Seven Segment Array

Hardware Design Breadboard Seven Segment Display 22 AWG 200C red and black wire Heat induced cable (heat sink) Magnet (neon ferrite) Pic16F887 (microcontroller) Sensory Type (Unipolar Hall Switch-Low Sensitivity)

10/16/2016

6

Hardware Design (Cont.) Power

‐Positive voltage regulator IC

‐ 12V Motorcycle battery

Hardware Design (Cont.)

10/16/2016

7

Hardware Design (Cont.)

1 2 3 4 5 6

Pin 1: 12V

Pin 2: GND

Pin 3: VCC

Pin 4: UP_SENSOR

Pin 5: DOWN_SENSOR

Terminal Block

12V Battery

Heat Induced Cable

Hall Sensor 1 Hall Sensor 2 +‐

3

6

1,4

2,5, ‐

+

Hardware Design (Cont.)

10/16/2016

8

Hardware Design (Cont.)

Shifting Pedal

Shifting Lever

UpDown

Hardware Design (Cont.)

10/16/2016

9

Hardware Design (Cont.)

Software Design Overview MPLab

- C Programming (C++)

Pic it start Plus-Program

MPLAB ICD 3-Debug

10/16/2016

10

Software Flow Chart

Code

10/16/2016

11

Multisim

Ultiboard

10/16/2016

12

PCB Board

Bottom Top

Finished PCB Board

10/16/2016

13

Testing/Validation Shall display corresponding gear number

Shall pass all shock tests

Shall pass all temperature tests

Shall be water resistance

Sensors mounted so they do not fall off.

Display shall be legible even in direct sunlight

Hall sensor shall be strong enough to detect shifts

Cost per Unit

Part Value Quantity Price (per unit) Total Price

R1 10 to 220 Ω ½W 1 $0.09  $0.09

R2, R3 10 ΚΩ ¼W 2 $0.13  $0.26

C1 220 μF / 35V / Electrolytic capacitor 1 $0.45  $0.45

C2 100 nF / polyester capacitor 1 $0.52  $0.52

MCU PIC16F887 1 $2.80  $2.80

IC1, IC2 Hall sensor 2 $0.71  $1.43

IC3 7805 5V Regulator TO‐220 1 $0.55  $0.55

RED 7 Segment Display " 1 $1.08  $1.08

Wire 22 AWG 200 °C Black wire 6ft $0.11  $0.66

Magnet Neon Ferrite 1 $1.87 $1.87

Total $9.82

10/16/2016

14

Given ItemsNames Quantity Price Total

Motorcycle 1 $22,000 $22,000

MPLAB ICD 3 1 $200.00 $200.00

PICIT START PLUS 1 $200.00 $200.00

MPLAB Software 1 $200.00 $200.00

IPFW Computer 1 $400.00 $400.00

Manufacturer of Board 3 weeks $40.00 $40.00

Paper Usage 1 $40.00 $40.00

Total Cost $23,080.00

Lessons Learned Time Management

School Work Board Real life

Resources Mercy Outside help (AVR Code)

Hardware AVR Code Microprocessor Hall Sensor ATV

Flexibility Difficult to work with multiple people’s schedules

10/16/2016

15

Conclusion Project was successful

Completed our main goals

Affordable

Demo

Installation

Demo

10/16/2016

16

Questions?