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REMOTE CONTROLLING OFSTEPPER MOTOR DIRECTION AND SPEED USING MOBILE.             By:             E. Arun Kumar            ...
Stepper Motor finds it applications in various areas.• COMPUTER APPLICATIONS• INDUSTRIAL APPLICATIONS• WIND TURBINES
Block Diagram :  Power  Supply                            L.C.DD.T.M.FDecoder                                    Stepper  ...
Components : HARDWARE IC 7805 AT89C52 (UC) HT9170b (DTMF DECODER) ULN2803a (MOTOR DRIVER) Stepper Motor L.C.D ( HT4...
Micro Controller : 8K Bytes of In-System Reprogrammable    Flash Memory   Endurance: 1,000 Write/Erase Cycles   Fully S...
Stepper Motor Types :• Unipolar Stepper Motor: Unipolar stepper motors are characterised by their center-tapped windings.
 Bipolar Stepper Motor: Bipolar stepper motors are designed with separate coils.
• Hybrid Stepper Motor : Variable reluctance stepper motor (also  called hybrid motors) are characterised by one common le...
Motor Driver :• Output current up to500mA• Output voltage up to 50V• Internal suppressiondiodes• Eight Darlington witheigh...
DTMF: Dual-tone multi-frequency signaling (DTMF)  is used for telecommunication signallingover  analog telephone lines in...
• The frequencies associated with various keys on the  keypad are shown in figure (A).
HT9170b :•Operating voltage:2.5V~5.5V•Minimal externalcomponents•No external filter is required•Low standby current (onpow...
L.C.D : Alpha Numeric L.C.D with  16 pins. 7-14 pins are data pins. L .C.D used is 2x16.
Flow Chart :                        start                Display Characters on                        L.C.D               ...
Conclusion : It finds its application in X-Y Plotter used in industrial  applications.
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Stepper motor

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Stepper motor

  1. 1. REMOTE CONTROLLING OFSTEPPER MOTOR DIRECTION AND SPEED USING MOBILE. By: E. Arun Kumar N. Archana V. Swetha
  2. 2. Stepper Motor finds it applications in various areas.• COMPUTER APPLICATIONS• INDUSTRIAL APPLICATIONS• WIND TURBINES
  3. 3. Block Diagram : Power Supply L.C.DD.T.M.FDecoder Stepper Micro Motor 1 Controller (AT89C52) Motor DriverMobilePhone Stepper Motor 2
  4. 4. Components : HARDWARE IC 7805 AT89C52 (UC) HT9170b (DTMF DECODER) ULN2803a (MOTOR DRIVER) Stepper Motor L.C.D ( HT44870) SOFTWARE Keil
  5. 5. Micro Controller : 8K Bytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-level Program Memory Lock 256 x 8-bit Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight Interrupt Sources Programmable Serial Channel Low-power Idle and Power-down Modes
  6. 6. Stepper Motor Types :• Unipolar Stepper Motor: Unipolar stepper motors are characterised by their center-tapped windings.
  7. 7.  Bipolar Stepper Motor: Bipolar stepper motors are designed with separate coils.
  8. 8. • Hybrid Stepper Motor : Variable reluctance stepper motor (also called hybrid motors) are characterised by one common lead.
  9. 9. Motor Driver :• Output current up to500mA• Output voltage up to 50V• Internal suppressiondiodes• Eight Darlington witheight emitters• Outputs can beparallelized
  10. 10. DTMF: Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signallingover analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center. A DTMF signal is the algebraic sum of two different audio frequencies, and can be expressed as follows: f(t) = A0sin(2*П*fa*t) + B0sin(2*П*fb*t) + ………..
  11. 11. • The frequencies associated with various keys on the keypad are shown in figure (A).
  12. 12. HT9170b :•Operating voltage:2.5V~5.5V•Minimal externalcomponents•No external filter is required•Low standby current (onpower down mode)•Excellent performance
  13. 13. L.C.D : Alpha Numeric L.C.D with 16 pins. 7-14 pins are data pins. L .C.D used is 2x16.
  14. 14. Flow Chart : start Display Characters on L.C.D If key pressed Display Corresponding Key on L.C.D rotate motor depending on key pressed Stop
  15. 15. Conclusion : It finds its application in X-Y Plotter used in industrial applications.

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