Project of Cell Fone Link With a Remote Control Robort

View previous topic View next topic Go down

GMT - 3 Hours Project of Cell Fone Link With a Remote Control Robort

Post by waqas on Fri Jun 24, 2011 8:41 am


  • Table of Contents
  • Abstract.......................................... ........ 2
  • Table of Contents...................................... 3
  • Table of Figures ..................................... 4
  • Introduction...................................... ........... 5
  • Objective ........................................... 5
  • Specifications.................................... .......... 6
  • Design ............................................ 7
  • Transmitter (Richard)..................................... 9
  • Approach to solution.................................... 9
  • Establishing a Control Signal through the Cell Phones (Michael) ................. 11
  • Received Signal (Michael)............................. 13
  • Filtering of the Received Signal ........................ 13
  • High-Pass Filter ......................................... 14
  • Low-Pass Filter ............................ 16
  • Speed Control System (Raj)................ 17
  • Comparator Circuit ............................. 18
  • Microcontroller Circuit ............................. 18
  • Control Circuit ................................... 22
  • H-Bridge and Rear Motor .................................... 22
  • Steering Control System (Justin) ................... 23
  • Reverse Engineering ........................... 23
  • Solution:......................................... ...... 24
  • PIC Program.......................................... 25
  • H-Bridge ................................ 25
  • Power (Justin) .............................. 26
  • Results and Conclusions ..................................... 27
  • References........................................ ........ 28
  • APPENDIX A................................................. .... 29
  • APPENDIX B.......................................... 40
  • APPENDIX C........................................... 43
  • APPENDIX D............................................. 47
  • APPENDIX E ......................... 60
  • APPENDIX F.......................................... 62
  • APPENDIX G........................................... 67
  • APPENDIX H........................................... 82


  • Table of Figures
  • Figure 1 - Project Idea. ............................ 5
  • Figure 2 - Block Diagram ......................... 8
  • Figure 3 – Control Signal to Phone Connection ................... 11
  • Figure 4 - Speed Control Logic ..................................... 17
  • Table 1 - Frequency Vs Duty Cycle. .......................... 20
  • Figure 5 - Duty Cycle Vs Frequency ............... 20
  • Figure 6 - Duty Cycle Vs Count ................................. 21
  • Table 2 - Control Bit Value and Pulses ........................... 22
  • Figure 7 - Diagram of Steering system................ 23
  • Figure A.1 – Transmitter Block Diagram.............................. 30
  • Figure A.2 – Preliminary Design for a Sine Wave Generator (Not Used in Final Design) ......... 30
  • Figure A.3 – Second Preliminary Design for Sine Wave Generator ............................................ 30
  • Figure A.4 – Pseudo Sine Wave Generator (Used in Final Design).......... 31
  • Figure A.5 – Output of One Pseudo Sine Wave Generator (High Frequency Channel) .............. 31
  • Figure A.6 – Voltage Divider and Operational Amplifier Buffer ........... 31
  • Figure A.7 – Summing Amplifier................ 32
  • Figure A.8 – Control Signal Generator (Transmitter) Schematic............ 32
  • Figure A.9 – Comparator Circuit................. 33
  • Figure A.10 - Low-to-High Transition Interrupts................ 33
  • Figure A.11 - Flow Chart for Acquiring Number of Counts from Timer upon
  • Interrupts........... 33
  • Figure A.12 - Servo Motors Control Circuit............ 34
  • Figure A.13 – UAF42A Universal Active Filter IC Circuit Diagram ........ 34
  • Figure A.14 – UAF42A Typical Application Circuit .......... 34
  • Figure A.15 – Actual High-Pass (Band-Pass) Filter Frequency
  • Response................................... 35
  • Figure A.16 – Maxim MAX291 8th Order Low-Pass Filter Typical Circuit ................................ 35
  • Figure A.17 – Low-Pass Filter Actual Frequency Response Plot ................................................ 35
  • Figure A.18 – Theoretical Low-Pass Filter Response From MAX291 Datasheet[2]................... 36
  • Figure A.19 – Generated Final Control Signal .................................................. ........................... 36
  • Figure A.20 – Signal Generated (Top) and Signal Received ...... 37
  • Figure A.21 – Latency of about 300ms between the Signal Generated and Signal Received...... 37
  • Figure A.22 - Receiver Board................... 38
  • Figure A.23 - ADC Setup ...................... 39
  • Figure B.1 – Joystick and Signal Generator Box............. 41
  • Figure B.2 – Female Two Pin Headset Cord to Circuit Connector ..... 41
  • Figure B.4 - A Typical Servo Motor....................... 42
  • Figure C.1 – Band-Pass Filter with center frequency of 2.2 kHz................ 44
  • Figure C.2 – Program Indicates Nearly -3dB Attenuation at Low Cut-off Frequency ...... 44
  • Figure C.3 – Program Indicates Nearly -3dB Attenuation at High Cut-off
  • Frequency...... 45
  • Figure C.4 – Resistance Values for Use with Figure A.15 to Build Filter .... 45
  • Figure C.5 – Cascade Layout to Obtain a 4th Order Filter Using Two UAF42As ... 46
  • Figure C.6 – Theoretical High-Pass Filter Frequency Response..... 46
  • Figure E.1: Budget.................... 61
avatar
waqas
A-Group
A-Group

Leo Tiger
Posts : 283
Join date : 2011-02-13
Age : 30

Back to top Go down

GMT - 3 Hours Re: Project of Cell Fone Link With a Remote Control Robort

Post by waqas on Fri Jun 24, 2011 8:42 am

If anyone have any info then please post here!
avatar
waqas
A-Group
A-Group

Leo Tiger
Posts : 283
Join date : 2011-02-13
Age : 30

Back to top Go down

View previous topic View next topic Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum