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# Steps of Developing the Motor Library
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## Version 01:
![](../Images/1.png)
Created two separate functions for testing:
- One function to turn the fan motor on or off
- Another function to set the motor speed
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## Version 02:
![](../Images/2.png)
Combined both actions into a single function and tested the new approach.
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## Version 03:
![](../Images/4.png)
Updated the speed control to use a percentage value.
The function now converts the percentage to a value between 0 and 1023 using PWM for smoother speed control.
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## Usage Example:
![](../Images/5.png)
A way to test the Library!