This document summarizes a student project to control a stepper motor through wireless transmission. The project uses a microcontroller to send step pulses to a driver circuit connected to a stepper motor. Commands can be sent from a computer serial port or wireless interface to control the motor speed displayed on an LCD screen. The system aims to provide precise digital control of the stepper motor position through simple wireless operation.

1. STEPPER MOTOR CONTROL THROUGH WIRELESS Submitted by (RAVI KUMAR,ASHWANI GARG,VINOD KUMAR,MANOJ GOSWAMI.VIBHOOTI KUMAR SINHA) FOURTH YEAR ELECTRONICS & TELECOMMUNICATION Guided by Mr. Aman dua , Mrs. Shiva Jaiswal LECTURER (ELECTRONICS & TELECOMMUNICATION ) COLLEGE OF ENGINEERING ROORKEE ROORKEE – 247 667

5. BLOCK DIAGRAM OF PROJECT USER INTERFACE INDEXER DRIVER MOTOR HIGH LEVEL COMMANDS STEP PULSES MOTOR CURRENT

8. INTERNAL STRUCTURE OF STEPPER MOTOR F=i (dl x B) ROTOR (permanent magnet) TEETH (to define precise rotation STATOR (carry coil for current Flow)

10. One Phase Steps

12. One Phase On Mode (Full Step mode)

13. One Phase On Steps Sequence

23. SERIAL Vs PARALLEL COMM.

28. Block diagram of receiver section CLOCK GENERATOR CONTROL LOGIC DECODER RECEIVER STEPPER MOTOR DRIVER LCD 12 V SUPPLY

29. PROJECT COMPONENTS MICRO CONTROLLER AT89C51 TRANCEIVER MAX 232 N ULN2803A DRIVER REGULATOR LM7805 STEPPER MOTOR POTENTIOMETER TRANSFORMER CLOCK GENERATOR CD40106 LCD HD44780