The DC Fans Speed Control PCB Design is developed to regulate the speed of DC fans using an ATmega328P microcontroller. The system adjusts the fan speed based on user input or environmental conditions, providing efficient cooling and power management.
Key Features of Fans Speed Control PCB Design Project:
- Microcontroller-Based Control: The ATmega328P processes inputs and adjusts the fan speed accordingly.
- PWM Speed Regulation: The fan speed is controlled using a Pulse Width Modulation (PWM) signal.
- OLED Display: A 128×32 OLED display provides real-time feedback on fan speed, voltage, and other parameters.
- User Input via Button: A 6x6x8.5 mm push button allows manual control of fan speed.
- Efficient Power Management: The CJ7805F voltage regulator ensures stable 5V power supply to the microcontroller.
- MOSFET-Based Switching: The IRF520 Ki Frame MOSFET is used for efficient fan speed control.
- Safety and Protection: The 1N4004-TP diode protects against reverse voltage, and connectors (DB301V-5.0-2P, DB125-3.5-2P-GN-S) ensure secure connections.
Components used in Fans Speed Control PCB Design:
1. ATmega328P (Microcontroller)
- Controls fan speed using PWM.
- Interfaces with the OLED display for real-time monitoring.
- Receives user input via the push button.
2. IRF520 MOSFET Driver
- Acts as a switch to regulate power to the DC fan.
- Provides high-efficiency control with minimal heat dissipation.
3. DISPLAY-OLED-128X32
- Shows fan speed, voltage, and system status.
- Enhances user interaction and monitoring.
4. CJ7805F (Voltage Regulator)
- Converts higher input voltage to a stable 5V for the microcontroller.
- Ensures reliable operation of digital components.
5. 1N4004-TP (Diode)
- Protects the circuit from reverse voltage damage.
- Increases the lifespan of components.
6. 10K and 1K Resistors
- Used for pull-up/down configurations and signal conditioning.
- Ensures stable operation of buttons and sensors.
7. DB301V-5.0-2P & DB125-3.5-2P-GN-S (Connectors)
- Provide secure connections for power and fan wiring.
8. Button (668.5)
- Allows manual control of fan speed.
9. GP25-2021WV-2P
- A Connector for interfacing with external devices or sensors.
Working Principle of DC Fans Speed Control Project:
Power Supply Management:
- The CJ7805F converts input voltage (e.g., 12V) to 5V, powering the microcontroller and other components.
- The 1N4004-TP diode protects against voltage reversal.
User Input & Processing:
- The button (6x6x8.5 mm) allows the user to adjust the fan speed.
- The ATmega328P processes the input and generates a PWM signal.
Fan Speed Control:
- The IRF520 MOSFET receives the PWM signal and adjusts the power supplied to the DC fan.
- The speed of the fan is directly proportional to the PWM duty cycle.
Real-Time Monitoring:
- The OLED display provides visual feedback, showing fan speed and system status.
Pictures of DC Fans Speed Control Design Project:
Applications of DC Fans Speed Control Project:
- Computer Cooling Systems
- Industrial Fan Speed Control
- Smart Home Ventilation
- Automotive Fan Control
- Battery-Powered Cooling Systems
Conclusion:
This PCB design provides an efficient, microcontroller-based solution for regulating DC fan speed, ensuring energy efficiency, longevity, and user control.
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