Fan Controller

An embedded system project that simulates a fan controller on proutes using a 3-layer modular architecture.

Workflow

The system will adjust the fan speed based on a temperature read from a sensor. It will be adjusted as follows :

• temperature
  • less than 30 : The fan is off.
  • greater than or equal to 30 : the fan work wiht 25% of it's maximum speed.
  • greater than or equal to 60 : the fan work wiht 50% of it's maximum speed.
  • greater than or equal to 90 : the fan work wiht 75% of it's maximum speed.
  • greater than or equal to 120 : the fan work wiht 100% of it's maximum speed.

Architecture & Modules

Proteus Circuit

Main Functionalities

• The system will NOT update the LCD unless the value actually changed.
• Modules independency. Each module will preforme it's purpose and handle it's own errors.
• Error handling and chekcing.
• High precision ADC conversion.
• 8-bit LCD mode.
• Dynamic configuration for some modules.
• static configuration for all modules.

Implemented Features

• All modules are highly portable and configurable.
• Well-documnted.
• Consistency in error handling and checking.
• Modular design.
• Communitcatable Modules ( Each module will always return a response with it's state ).

Feautre Extensions

There is A LOT that can be extended on this project some of which are :

• simulating the temperature changing based on the fa speed. '
• adding extra sensors to get more information about the fan it-slef.
• negative temperature handling.
• Anti-clock wise fan usage ( for heating up the motor ).
• Double fan usage for extreme heat managment.