Project Description: Stepper Motor Control Card Using PIC16F877A
This project involves the design and implementation of a compact motor control board using the 16F877A PIC microcontroller. The control system is equipped with the following components:
- 16F877A Microcontroller: Manages the control logic for the stepper motor.
- LCD Display: Displays motor parameters, such as speed, status, and direction.
- 4 Buttons: Provides user input for motor control (e.g., start/stop, speed adjustment, direction change).
- Crystal Oscillator: Ensures precise timing for the microcontroller’s operation.
- Additional Components: Including "strength" and "capacity" components, which likely refer to parameters or modules for controlling power and load handling.
Objectives and Functionality
The goal of this project was to develop a small-sized motor control card capable of:
- Starting and Stopping the Motor: Allows manual control over the motor’s on/off state.
- Changing the Direction: Enables reversal of the motor’s rotation direction.
- Speed Control via Duty Cycle Adjustment: By controlling the duty cycle (the ratio of active time to idle time), the circuit can vary the motor’s speed. This is achieved by adjusting the time intervals for each 7.5˚ step of the motor.
Educational Outcomes
This project serves as an introductory experience in:
- Motor Control Principles: Familiarizes with the basics of stepper motor operation, including directional control and speed variation.
- Electronics and Component Integration: Provides practical knowledge of widely used electronic components like microcontrollers, LCDs, buttons, and oscillators, many of which may be new to the project team.
This compact motor control board allows precise adjustments of a stepper motor’s movement, direction, and speed. It serves as both a practical motor control solution and a valuable educational tool in electronics and microcontroller programming.
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