1. Mayuresh Varerkar

2. Block Diagram March 15,2011 Accelerometer Based Mouse - Mayuresh Varerkar 2 Accelerometer and Buttons µC Graphical LCD PC InputOutputProcessing I 2 C / SPI Serial

3. Hardware Elements Serial Graphical LCD 3 axis Accelerometer (ADXL345) 2 Pushbuttons for right and left click LED Circuit to determine left/right click 2 Logic Converters for interfacing the µC to the Accelerometer (Converts 3.3V to and from 5V)

4. Software Elements Accelerometer Interface using SPI/I2C Filtering the output to avoid repetition of data Polling functions for left/right click to detect switch press Serial interface to display accelerometer data on terminal Serial interface to display accelerometer data on Graphical LCD

5. Challenges Experienced More challenges than the amount of work Hardware Challenges: Pin outs (Different in separate sources) Pull up Resistors Logic Converter (Unexpected Output) Software Challenges: I2C/SPI protocol for communication with accelerometer

6. Thank You Questions ? March 15,2011 Accelerometer Based Mouse - Mayuresh Varerkar 6