1. Multidisciplinary Engineering Senior Design Project 06520 Self-Triggered Tempo Meter Preliminary Design Review 02/24/06 Team Members: John Gifford (EE) - Sponsor Scott D’Vileskis (EE) Frank Gill (ME) Jeremy LaDuke (ISE) Team Mentor: Dr. Phillips Kate Gleason College of Engineering Rochester Institute of Technology

2. Project Overview  Self-triggered Tempo Meter with display Design device to provide real-time feedback about the average speed the drummer is playing at Allows drummer to adjust tempo while providing feedback on consistency by displaying average tempo being played Primary target application is marching bass drum Will be a significant improvement over any currently available tempo meters

3. Definition of Terms  Beat  Tempo  Impulse  Rhythm  BPM

4. Customer Needs Assessment  Accurate tempo detection  Easy to use  Durable  Lightweight  Ease of mounting  Trigger availability  Aesthetics

5. Key Requirements & Critical Parameters  Weight  Size  Display  Battery Life  Case Material  CPU Type  Modularity  Tempo Range  Maximum Impulse Frequency  Precision  Sensitivity Adjustment

6. The Design Process…  Needs assessment Customer needs Key Requirements & Critical Parameters  Concept development Brainstorming QFD Chart Trigger Research Block Diagram  Feasibility Assessment Pugh Charts

7. Features  3 Different Modes of Operation Tempo Meter Mode (Default)  Displays BPM currently being played by drummer Metronome Mode  Conveys BPM by flashing at specified rate Tempo Trainer Mode  Initially like Metronome Mode  First impulse shifts unit to Tempo Meter Mode  Button ends sampling and displays statistics  Time-of-day Clock

8. Interface  Graphic LCD Display Tempo (in BPM) Time-of-Day Mode  MODE Button  UP/DOWN Buttons  Trigger Inputs Two ¼” Female Mono Phono Jacks

9. Overall System Block Diagram

10. Analysis & Synthesis of Design  Software Design Flow Chart  Electrical Design Calculations Component Selection Schematics  Mechanical Design Measurements Material Selection CAD Drawings

11. Assembly Drawing

12. Electrical Components  LCD Display Microtips MGS-S12864BRGHS 128x64 graphical LCD STN gray reflective (no backlight)  PIC Microcontroller Microchip PIC18F2515 48kB Flash, 4kB RAM 25 I/O Built-in timers and I 2 C interface 10-channel 10-bit ADC

13. Electrical Components (continued)  4 Pushbuttons POWER – push-on/push-off MODE/UP/DOWN - momentary  Real-time Clock Chip Dallas DS1307 BR2032 3V Lithium cell for long-term back-up  Two ¼” Female 2-Conductor Phono Jacks  4 AA Cells in Series (Alkaline or NiMH)  Dual-Output +/-5V DC-DC Converter

14. Design Challenges  Trigger Signal Conditioning  Impulse Detection  Modularity  Tempo Determination  Component Layout  Case Design  Mounting Scheme  Power Supply (Battery Life)

15. Deliverables  Complete Preliminary Design Software flow and structure Electrical schematic Layout, dimensions, and tolerances Bill of materials Test plan

16. SD II Project Plan  Assess marketability  Order components  Breadboard prototype  Implement software  Execute test plan  PCB design and manufacture  Case manufacture  Final assembly and testing

17.  Questions?