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Current Works

In the current phase of our project, we have successfully soldered pins onto the IMU, XBee breakout board, and the 3.3V voltage regulator. We've also powered the XBee using 2 AA batteries with the voltage regulator. Serial communication between two XBees has been configured and tested, although we are encountering issues with A/D conversion on the XBee. Continued troubleshooting is necessary to resolve this matter and ensure optimal performance for our applications.

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Current Works

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  1. 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
  2. Current Test Setup
  3. 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
  4. What’s Next? Begin testing accelerometer and gyroscope output on IMU with the assistance of MobileStudioBoard 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
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