The purpose of this project is to design and construct an automatic height adjustable hand sanitizer stand used in many places.   In this corona period hand sanitizer is an essential thing. Because it can kill the Covid -19 virus. But use of the normal sanitizer bottle becomes very danger. When an infected person presses the bottle trigger, the virus may spread from this hand sanitizer bottle. We can solve this by using Automatic hand sanitizer bottle. Automatic means, no need to trigger with our hand. Just place your hand near the bottle. The bottle will automatically trigger based on person height using ultrasonic sensor.   The project makes a use of ultrasonic sensor to measure the height of the person. DC motor is attached to the outlet of sanitizer. DC motor is used to adjust the height of the stand based on person. DC water motor is used to pump the water. The main controlling device of the project is PIC Microcontroller which is written in embedded c language.        

The main objectives of the project are:  

1. Design a height adjustable hand sanitizer.
2. It can be used all types of peoples.

         

The major building blocks of this project are:  

• Power supply.
• PIC Microcontroller.
• Ultrasonic sensor.
• DC motors with l293ddriver.
• DC water pump with Relay.
• Crystal oscillator.
• Reset button.
• LED indicator.

     

Software’s used:    

1. PIC-C compiler for Embedded C programming.
2. Express SCH for Circuit design.

             

Regulated Power Supply:        

                       

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