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Integrating Bluetooth onto LEGO Robots

Integrating Bluetooth onto LEGO Robots. Andrew Jones Mike Krofcheck. Agenda. Project Purpose Project Solution and Goals Design Goals Results and Conclusions Acknowledgments Q & A. Problem to be solved. EECS 375 robot designs repeated often Limitations with wired communication

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Integrating Bluetooth onto LEGO Robots

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  1. Integrating Bluetooth onto LEGO Robots • Andrew Jones • Mike Krofcheck

  2. Agenda • Project Purpose • Project Solution and Goals • Design Goals • Results and Conclusions • Acknowledgments • Q & A

  3. Problem to be solved • EECS 375 robot designs repeated often • Limitations with wired communication • Difficult to download code • Robots don’t “talk” • Limited teamwork during competition

  4. Project Solution & Goals • Design integrated Bluetooth communication board for use with serial devices • Develop Bluetooth driver software for use with microcontroller • Integrate communication board with EECS 375 robots

  5. Design Steps • Acquire parts for project • Design high frequency RF antenna • Design/Fabricate PCB for module • Test and verify operation PCB • Integrate PCB with host computer • Integrate PCB with host microcontroller

  6. PCB/Antenna design Acquire BTM Verify PCB Micro. development Design Steps Mike Integrate Andrew/Mike Andrew/Mike Andrew/Mike Andrew

  7. Acquiring Bluetooth • Found module for purchase in U.K. • Windigo Systems BCM02C2XX-R • All-in-one solution • 68HC12 micro. development kit • Acquired from “Frank” • Feature set

  8. Antenna Design • Integrated Inverted-F Antenna (IIFA) • Compact size • Integrated on to PCB • Redundancy in antenna design

  9. PCB Design • High frequency concerns • Decoupling capacitors • Component placement • Antenna & ground plane • Test points

  10. PCB Verification • Visual inspection • Trace continuity • Initial RF output detection • Interface w/ host via RS232

  11. BTM Integration • RS232-to-UART converter • Voltage conversion process • Use of Max232 • Signal connection scheme

  12. BTM Integration

  13. BTM Integration TxD Conversion RxD

  14. Results & Conclusions • Generic BT communication board created that could interface with serial devices • BT developer support limited • Great deal learned during project • Future work on project ...

  15. Acknowledgments • Frank Merat • Bob Leskovec • Rob Barris • Quinton S.Q. Yuan

  16. Q & A

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