Design and Development of Automatic Water Dispenser

A liquid dispenser is usually a mechanical device which is used to pour water through the outlet tap
when we turn it on by pressing the button or rotating the tap. As the title depicts our proposed project
will automate this process so liquid from the tank or bottle automatically gets poured into the glass
through the outlet pipe when you put glass in front of it. This project will be direct and practical
application of semiconductor microelectronics devices. A major part of this project is IR based
Proximity sensor which is used to detect the presence of glass and feed the signal to MCU which then
turns on the water pump. We have a plan not just to do the calculations and simulations but also
develop a working hardware prototype of said product.

1. Design and Development of Automatic Water Dispenser Presented By M Saif Ul Islam NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY NUST EE903-Advanced Semi-conductor device theory Semester Project Presentation Design and development of Automatic water dispenser 1

2. Introduction We are familiar with the term “AUTOMATIC”, these days we want each gadget of ours to be automatic. There has been an upsurge in the quest for man to get his devices automatic. With the latest innovations in semiconductor devices various nano electronics sensors and IC’s are now easily available through which we can automate our appliances. Design and development of Automatic water dispenser 2

3. Description A liquid dispenser is usually a mechanical device which is used to pour water through the outlet tap. As the title depicts our proposed project will automate this process so liquid from the tank or bottle automatically gets poured into the glass through the outlet pipe when you put glass in front of it. Design and development of Automatic water dispenser 3

4. Motivation Design and development of Automatic water dispenser 4

5. Semiconductor Devices Design and development of Automatic water dispenser 5 Semiconductor Device Application IR LED Proximity Sensor Photodiode Light Emitting Diode (LED) Green Status LED Zener Diode Transient Protection at MCU input pins Integrated Circuit Microcontroller MOSFET MOSFET as Switch MOSFET MOSFET in BMS Solar Cell For charging the battery PN diode Freewheeling Action Liquid Crystal Display For displaying information

6. Schematic Design and development of Automatic water dispenser 6

7. Design and development of Automatic water dispenser 7 Ref: www.seeedstudio.com

8. Design and development of Automatic water dispenser 8 Shrink and Expand Principle

9. Design and development of Automatic water dispenser 9 Ref: https://www.circuitbread.com/tutorials/how-does-an-led-work T ype of  diode that is specifically designed to emit light.. Same operation as general-purpose or a rectifier diode. W hat makes it emit light is the  semiconductor material. Compound semiconductor materials like gallium. arsenide, gallium phosphide.( III–V) What is a LED? Why Silicon is not used in LED..??

10. How does an LED work? Ref: https://www.circuitbread.com/tutorials/how-does-an-led-work Design and development of Automatic water dispenser 10

11. LED Color Ref: https://www.circuitbread.com/tutorials/how-does-an-led-work Design and development of Automatic water dispenser 11 Photons have different energy based on their wavelength G reen LEDs to indicate that the circuit is in good condition R ed LEDs to indicate that there’s a problem

12. LED Construction Ref: https://www.circuitbread.com/tutorials/how-does-an-led-work Design and development of Automatic water dispenser 12

13. Design and development of Automatic water dispenser 13 IR Proximity Sensor Ref: www.arduino.cc

14. Design and development of Automatic water dispenser 14 IR Proximity Sensor Ref: www.circuitdigest.com

15. Design and development of Automatic water dispenser 15 Arduino Nano

16. Design and development of Automatic water dispenser 16 ATmega328P

17. Design and development of Automatic water dispenser 17 ATmega328P

18. Design and development of Automatic water dispenser 18 Motor Driver (MOSFET as Switch) Freewheeling Diode D issipation of energy stored in motor inductance Simple PN Diode (1N4007) It short circuits the load when the switching element is in OFF state and hence the stored energy in the  magnetic field  of inductive load is dissipated as heat.

19. Design and development of Automatic water dispenser 19 Motor Driver (MOSFET as Switch) Design Parameters Drive voltage ( Vgs ): 5V Load Current (Id): 120mA Load Voltage ( Vds ) : 12V

20. Design and development of Automatic water dispenser 20 Motor Driver (MOSFET as Switch) Design Parameters Drive voltage ( Vgs ): 5V Load Current (Id): 120mA Load Voltage ( Vds ) : 12V

21. Design and development of Automatic water dispenser 21 Motor Driver (MOSFET as Switch)

22. Design and development of Automatic water dispenser 22 LED driver

23. Design and development of Automatic water dispenser 23 Battery Charger + Boost Converter ASIC Chip TP4056 ASIC Boost Chip

24. Design and development of Automatic water dispenser 24 Boost Converter https://learnabout-electronics.org/PSU/psu32.php By Marino108LFS - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=99292650 V OUT  = Vin/(1- D )

25. Design and development of Automatic water dispenser 25 Software Part State Machine READY WAIT START STOP RESET IR=0 IR=1 Delay < 0.5S Delay=0.5S IR=0 IR=1 Delay=0.5S Delay < 0.5S LED -> OFF BUZZER -> OFF MOTOR -> OFF LED -> ON BUZZER -> ON MOTOR -> OFF LED -> ON BUZZER -> OFF MOTOR -> ON LED -> OFF BUZZER -> ON MOTOR -> OFF

26. Design and development of Automatic water dispenser 26 Hardware Design

27. Design and development of Automatic water dispenser 27 Applications

28. PROJECT DEMO & QUESTIONS Design and development of Automatic water dispenser 28 Thankyou for your Attention