This project serves as a prime example of an embedded system, as its operations are controlled by intelligent software within the microcontroller. It utilizes GSM technology to develop a DC motor control device that can be operated remotely through SMS messages. The system validates the sender’s Mobile Identification Number (MIN) and performs the desired motor control operation. Contact-less speed measurement technique is employed to measure the motor speed, and PWM is used for speed control. A GSM modem facilitates automatic SMS sending and receiving. To ensure security, the project incorporates password-based protection, requiring the user to send the password along with the control commands.
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