├── Design Circuit Diagram - Proteus Software.pdsprj
├── Program Code  Water Level Controller using 8051.c
├── README.md
└── Water Level Controller using 8051.hex


/Design Circuit Diagram - Proteus Software.pdsprj:
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https://raw.githubusercontent.com/vishallprasad/Water-Level-Controller-using-8051-Microcontroller/27cdc69b108523e92e8f68b652432e08aace39a1/Design Circuit Diagram - Proteus Software.pdsprj


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/Program Code  Water Level Controller using 8051.c:
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  1 |  #include<reg51.h>
  2 | sbit full=P1^0;
  3 | sbit mid=P1^1;
  4 | sbit emp=P1^2;
  5 | sbit t2=P1^3;
  6 | sbit rs=P0^0;
  7 | sbit rw=P0^1;
  8 | sbit en=P0^2;
  9 | sbit rly=P3^0;
 10 | 
 11 | void lcddta(unsigned char[],unsigned char);
 12 | void lcdcmd(unsigned char);
 13 | void msdelay(unsigned int);
 14 | void main(void){
 15 |     rly=0;
 16 |     P0=00;
 17 |     P2=00;
 18 |     full=1;
 19 |     mid=1;
 20 |     emp=1;
 21 |     t2=1;
 22 | 
 23 |     lcdcmd(0x38);
 24 |     lcdcmd(0x0c);
 25 |     lcdcmd(0x06);
 26 |     lcdcmd(0x01);
 27 |         while(1){
 28 |             if(t2==0){
 29 | 						//lower motor condition
 30 | 
 31 |                 if(emp==1 && mid==1 && full==1){
 32 |                     rly=1;
 33 |                     lcdcmd(0x01);
 34 |                     lcdcmd(0x80);
 35 |                     lcddta("tank is empty",13);
 36 |                     lcdcmd(0xc0);
 37 |                     lcddta("motor is on",11);
 38 |                 }else if(emp==0 && mid==1 && full==1){
 39 |                     rly=1;
 40 |                     lcdcmd(0x01);
 41 |                     lcdcmd(0x80);
 42 |                     lcddta("tank filling",12);
 43 |                     lcdcmd(0xc0);
 44 |                     lcddta("motor is on",11);
 45 |                 }else if(emp==0 && mid==0 && full==1){
 46 |                     rly=1;
 47 |                     lcdcmd(0x01);
 48 |                     lcdcmd(0x80);
 49 |                     lcddta("tank is mid",11);
 50 |                     lcdcmd(0xc0);
 51 |                     lcddta("motor is on",11);
 52 |                 }else if(full==0 && mid==0 && emp==0){
 53 |                     rly=0;
 54 |                     lcdcmd(0x01);
 55 |                     lcdcmd(0x80);
 56 |                     lcddta("tank is full",12);
 57 |                     lcdcmd(0xc0);
 58 |                     lcddta("motor is off",12);
 59 |                 }
 60 | 				else{
 61 | 				}
 62 | 
 63 |         }else{
 64 | 		rly=0;
 65 |             lcdcmd(0x01);
 66 |             lcdcmd(0x80);
 67 |             lcddta("tank 2 empty",12);
 68 |             lcdcmd(0xc0);
 69 |             lcddta("fill tank 2",11);
 70 |         }
 71 |     } //end of while
 72 | }//end of main
 73 | 
 74 | void lcdcmd(unsigned char cmd){
 75 |     P2=cmd;
 76 |     rs=0;//cmd
 77 |     rw=0;//write
 78 |     en=1;//latch
 79 |     msdelay(5);
 80 |     en=0;
 81 | }//end of lcdcmd
 82 | 
 83 | void lcddta(unsigned char a[],unsigned char len){
 84 |     unsigned char x;
 85 | 
 86 |     for(x=0;x<len;x++){
 87 |         P2=a[x];
 88 |         rs=1; //data
 89 |         rw=0;
 90 |         en=1;
 91 |         msdelay(5);
 92 |         en=0;
 93 |     }//end of for
 94 | }//end of lcddta
 95 | 
 96 | void msdelay(unsigned int a)
 97 | {
 98 |     unsigned int x,y;
 99 | 
100 |     for(x=0;x<a;x++)
101 |         for(y=0;y<1275;y++);
102 | }//end of msdelay
103 | 


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/README.md:
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 1 | # Water-Level-Controller-using-8051-Microcontroller
 2 | 
 3 | The water level controller, which uses the 8051 microcontroller project, helps automatically control the water motor by detecting the water level in a tank. In this article, you will learn how to detect and control the water level in a tank or other container. This system monitors the tank water level and automatically turns ON the Motor when the tank is empty.
 4 | 
 5 | The Motor is turned OFF when the top tank or tanky is full. Here the water level of the tank is shown on the LCD screen (liquid crystal display). With this system, we can also avoid overflowing the water. Here we are designing the circuit which is used to detect and control the water level automatically in the overhead tank using 8051 Microcontroller.
 6 | 
 7 | ## Introduction
 8 | 
 9 | Water level controller, the name itself indicates that an electronic device or circuit kit used for controlling the water level can be termed as a water level controller. It is difficult to know the level of water in the overhead tank such that wastage of water can happen frequently. To conserve water, avoid overflow of water in the overhead tank which may cause loss of water, loss of electrical power, etc.,. Thus, an ultrasonic water level controller using 8051 microcontroller is an innovative electronics project application for controlling water level.
10 | 
11 | A Water Level Controller using the 8051 Microcontroller project will help in automatically controlling the water motor by sensing the water level in a tank. This article explains how to detect and control the water level in an overhead tank or any other container. This system monitors the water level of the tank and automatically switches ON the motor whenever the tank is empty.
12 | 
13 | ## Need of Project
14 | 
15 | A water level controller is a device that manages water levels on a variety of systems such as water tanks, pumps and swimming pools. The basic function of a water level controller is to regulate water flow and optimize system performance. One of the main advantages of water level control devices includes the ability to control power fluctuations when the motor is switched on. Most of these devices ensure uninterrupted water supply by filling the overhead tank once it is below level. The motor power is switched on when the overhead tank becomes empty and switches off automatically when the underground tank is empty or the overhead tank becomes full. In this way it becomes easy to ensure 24 hours water supply without any kind of interruption
16 | 
17 | ## Application
18 | - Fuel level indicator in vehicles.
19 | - Used in big buildings where manual monitoring is difficult.
20 | - Used in industries to control the liquid level automatically.
21 | - Automatic water level controllers can be used in Homes apartments, commercial complexes.
22 | 
23 | ## Limitation
24 | - The Rust, Foul and Deteriorate.
25 | - Wire use in the tank can be replaced every two years.
26 | 
27 | **System Circuit Diagram**
28 | | :--: |
29 | ![Capture](https://user-images.githubusercontent.com/77826589/120591368-a556e180-c459-11eb-9498-30a5414a7c9f.PNG)
30 | 
31 | 
32 | ## Component Used
33 | - AT89S52 Microcontroller (or any 8051 based Microcontroller)
34 | - 8051 Programmer (Programming Board)
35 | - 11.0592 MHz Quartz Crystal
36 | - 2 x 33pF Capacitor
37 | - 2 x 10KΩ Resistor (1/4 Watt)
38 | - 10µF Capacitor
39 | - Push Button
40 | - 1KΩ x 8 Resistor Pack (for Pull – up)
41 | - 16 x 2 LCD Display
42 | - 5V Relay
43 | - 4 x 2N2222 (NPN) Transistors
44 | - DC Motor (for demonstration)
45 | - 10KΩ Potentiometer
46 | - 1N4007 PN Junction Diode
47 | - Programming cable
48 | - Connecting wires
49 | - Power Supply
50 | - Keil µVision IDE
51 | - Proteus (for circuit diagram)
52 | 
53 | ### Algorithm for Water Level Controller Circuit
54 | ```ruby
55 | 1] First configure the controller pins P0.0, P0.1 and P0.2 as inputs and P0.7 as output. Now, initialize the LCD.
56 | 2] Continuously check the water level input pins P0.0, P0.1 and P0.2.
57 | 3] If all the pins are low, then display tank as “EMPTY” on the LCD and make P0.7 pin HIGH to run the motor automatically.
58 | 4] If the level is low i.e. if P0.0 is HIGH, display the water level as “LOW” and continue to run the motor.
59 | 5] A HIGH pulse on the pin P0.1 indicates that water has reached half level. So, display the same thing on LCD and run the motor normally.
60 | 6] If P0.2 is HIGH, then the water level in the tank is FULL.
61 | 7] Now, make the P0.7 pin as LOW to turn off the motor automatically.
62 | ```
63 | 
64 | ### How to Operate Water Level Controller Circuit using 8051 Microcontroller?
65 | ```ruby
66 | Step 1 - Initially, write the program for Water Level Controller in Keil µVision IDE and generate the .hex file.
67 | Step 2 - Burn the program (.hex file) to the microcontroller using external programmers and Proteus Software.
68 | Step 3 - Now give the connections as per the circuit diagram.
69 | Step 4 - If water in the upper tank is below the lower sensor, turn on the motor and display the message ‘Tank is empty and Motor is on’.
70 | Step 5 - If water in the upper tank is above the lower sensor and below the mid sensor, turn on the motor and display the message ‘Tank is empty and Motor is on’.
71 | Step 6 - If water in the upper tank touches the upper sensor, turn off the motor and display the message ‘Tank is full and motor is off’.
72 | ```
73 | 
74 | ## Results
75 | 
76 | ### Simulation Result State - 1
77 | ![Capture1](https://user-images.githubusercontent.com/77826589/120591918-96bcfa00-c45a-11eb-99a3-404d0307d29d.PNG)
78 | | :--: |
79 | **TANK IS EMPTY AND MOTOR IS ON SIMULATION RESULT**
80 | 
81 | ### Simulation Result State - 2
82 | ![Capture2](https://user-images.githubusercontent.com/77826589/120592119-f3201980-c45a-11eb-88a3-73d976a3438d.PNG)
83 | | :--: |
84 | **TANK IS FULL AND MOTOR IS OFF SIMULATION RESULT**
85 | 
86 | 
87 | ## References
88 | - https://www.circuitsarena.com/2018/03/water-level-controller-by-using-8051.html
89 | - https://www.electronicshub.org/water-level-controller-using-8051-microcontroller/
90 | 


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/Water Level Controller using 8051.hex:
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 1 | :1008E70074616E6B20697320656D707479006D6F2C
 2 | :1008F700746F72206973206F6E0074616E6B20666F
 3 | :10090700696C6C696E670074616E6B206973206D2A
 4 | :1009170069640074616E6B2069732066756C6C0086
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 6 | :100937006B203220656D7074790066696C6C207469
 7 | :06094700616E6B2032001E
 8 | :10080000C2B0E4F580F5A0D290D291D292D2937F7B
 9 | :10081000381209D57F0C1209D57F061209D57F0140
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22 | :0708E0000B12094D02082371
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24 | :0A09D5008FA0C2801209A9C282227D
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29 | :01097B002259
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32 | :0F09C100010ABA04F8BBFBF50DBD00010C80E480
33 | :0109D0002204
34 | :030000000209DF13
35 | :0C09DF00787FE4F6D8FD75810C0208005A
36 | :10097C00BB010CE58229F582E5833AF583E0225030
37 | :10098C0006E92582F8E622BBFE06E92582F8E2227A
38 | :0D099C00E58229F582E5833AF583E4932294
39 | :00000001FF
40 | 


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