Current Works

• Soldered pins onto IMU, XBee breakout board, and 3.3V regulator

• Successfully powered XBee off of 2 AA batteries using the voltage regulator

• Configured and tested serial communication between 2 XBees

Current Test Setup

XBee A/D Conversion problems

• Only 4 pins for input- going to need more because IMU has 5 outputs– Could be solved by using a MUX

• Can only read voltages between 0 volts and 1.2 volts- voltages can be scaled down using resistors but will lose some precision– Future testing needed with IMU to determine how significant this

problem is• XBee freezes up whenever the required A/D firmware is

downloaded• Possible solution- use Microprocessor to perform A/D

conversion and send to XBee using serial communication– Microchip offers free samples of their microprocessors and there are

small chips specializing in A/D conversions

What’s Next?

• Begin testing accelerometer and gyroscope output on IMU with the assistance of MobileStudio Board– Determine output range

• If Xbee conversion will be precise relative to results form IMU testing, continue researching and programming Xbee to perform A/D conversions

• Research other A/D conversion chips/microprocessors