Stepper Motor Speed Controlling Using

STEPPER MOTOR SPEED CONTROLLING USING CELL PHONE (DTMF)

INTRODUCTION The Embedded Technology is now in its prime and the wealth of knowledge available is mind-blowing. Embedded technology plays a major role in integrating the various functions associated with it. This needs to tie up the various sources of the Department in a closed loop system. This proposal greatly reduces the manpower, saves time and operates efficiently without human interference. This project puts forth the first step in achieving the desired target. With the advent in technology, the existing systems are developed to have in built intelligence.

Project description: The aim of this project “stepper motor speed controlling using cell phone (DTMF)” is used to control the stepper motor by using the cell phone. Here we are using the DTMF (Dual tone multi frequency) to transmit the data from cell phone to Microcontroller. The scan codes are scanned by the U L from key pad of microcontroller from mobile which gives audio frequency N mobile. For each key it will produces different audio frequency. This project 2 consists of Power supply, Microcontroller, PWM, and motor driving units. The 0 Stepper input will be givenDTMF to the controller through set switches. receives 0 The controller Mobile motor 3 the data according to the value set by the cell phone switches. This can be done driver by manual. Then the controller gives digital input to the PWM, which converts the digital data in to analog and drives the motor unit.

BLOCK DIAGRAM:

Micro controller

U L N 2 0 0 3 driver

Stepper motor