Integrating bluetooth onto lego robots
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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
Integrating Bluetooth onto LEGO Robots

  • Andrew Jones

  • Mike Krofcheck


Agenda
Agenda

  • Project Purpose

  • Project Solution and Goals

  • Design Goals

  • Results and Conclusions

  • Acknowledgments

  • Q & A


Problem to be solved
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


Project solution goals
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


Design steps
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


Design steps1

PCB/Antenna design

Acquire BTM

Verify PCB

Micro. development

Design Steps

Mike

Integrate

Andrew/Mike

Andrew/Mike

Andrew/Mike

Andrew


Acquiring bluetooth
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


Antenna design
Antenna Design

  • Integrated Inverted-F Antenna (IIFA)

    • Compact size

    • Integrated on to PCB

  • Redundancy in antenna design


Pcb design
PCB Design

  • High frequency concerns

    • Decoupling capacitors

    • Component placement

    • Antenna & ground plane

  • Test points


Pcb verification
PCB Verification

  • Visual inspection

  • Trace continuity

  • Initial RF output detection

  • Interface w/ host via RS232


Btm integration
BTM Integration

  • RS232-to-UART converter

    • Voltage conversion process

    • Use of Max232

  • Signal connection scheme



Btm integration2
BTM Integration

TxD

Conversion

RxD


Results conclusions
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 ...


Acknowledgments
Acknowledgments

  • Frank Merat

  • Bob Leskovec

  • Rob Barris

  • Quinton S.Q. Yuan



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