1. Madalina Vintila David Wilkinson Michelle Zhang Zac Greenawalt

2. Project Idea The Magic Wand would be a device that utilizes accelerometers to detect characters based off of gestures made by an individual on a writing pad. The Magic Wand would communicate wirelessly with a base station that then outputs the detected characters to an LCD display. A pressure sensor would be used in the pen to detect when writing is taking place.

3. Constraints for pen Small enough to fit in a pen Low enough power consumption to run off a battery Proper peripherals to interface with wireless transceiver (SPI in master mode) and accelerometers (2 channels of Input Capture)

4. Microchip Vs. Atmel for pen MicrochipPIC18LF2320 # of pins28 # of I/O pins25 Program Memory (kB)8 RAM Bytes512 4 wire SPI with master modeYes 2 channels of Input CaptureYes PackageSOIC Power Consumption1W DocumentationYes Price$ 7.50 (processing for sample) ATmega1281/V was included in a module with a transceiver.

5. Constraints for base station Proper peripherals to interface with wireless transceiver (SPI in master mode) Enough I/O pins to interface with LCD Display Large FLASH memory

6. Microchip PIC33 family for base station dsPIC33FJ64GP306dsPIC33FJ128GP204 # of pins6444 # of I/O pins5335 FLASH (kB)64128 RAM Bytes16k8k 4 wire SPI with master mode 2 channels PWM for sound8 + 1(16 bit) channels4 + 1(16 bit) channels PackageTQFP Documentation/SupportYes Price$3.63-5.30$3.69-6.03