Building an Arduino-based Car Parking System

How to make Car Parking System using Arduino and i2c lcd display | Automatic Car Parking System
Code, Schematics and Proteus Simulation Download link:- marobotic.com/...
Components Details () {
Arduino Uno:- marobotic.com/...
20×4 LCD Display:- marobotic.com/...
I2C LCD Module:- marobotic.com/...
Male Header:- marobotic.com/...
Female Header:- marobotic.com/...
IR Sensor:- marobotic.com/...
Mini Servo Motor SG-90:- marobotic.com/...
Female DC Power Jack:- marobotic.com/...
5v 2Amp Power Adapter:- marobotic.com/...
}
We regularly uploads exciting videos like this
Suscribe us For More Videos
Muhammad Ansar
[phone]
Visit My Website:- marobotic.com/...

[@KundanKumar-pi8dq]

Sir hm pure KZbin pe ghum liya but aapse better explanation nhi mila ......... Very and very thanks 🙏🏻🙏🏻

[@MuhammadAnsar]

Thanks for the compliment

[@kiariajohnson4374]

Can you use IR and PIR sensors interchangeably?!

[@ismailemon5238]

We have done a project to see your video❤️❤️ Love From Bangladesh Polytechnic students ❤️❤️

[@MuhammadAnsar]

Thank you so much 😀

[@JulieannCostillas]

bro can you send me your file

[@me_prapulgowdadl8261]

Hii bro

[@supelec0987]

ماشااللہ زبردست

[@MuhammadAnsar]

thank you

[@RishiPreethamSiripuram]

Everything is ok but the issue is with code compilation error. POSITIVE was not declared in the scope.Could you please resolve this issue

[@alokesh5968]

You want edit some line

[@Funny_sto_rees]

brother can we use ldr sensor instead of ir for street light fault project in this model

[@MuhammadAnsar]

yes use this

[@aniket7179]

Sir which ardiuno ide we should use for this....? Tell me its version also..?

[@MuhammadAnsar]

arduino 1.8.16

[@prathapyadav9534]

Which programming language your used in this project sirr.can you please tell me

[@MuhammadAnsar]

C language

[@Fun4uM]

sir what we can use atmega16 microcontroller sir please give reply its my major project

[@MuhammadAnsar]

yes use this

[@rdcreator2564]

Compilation error: 'POSITIVE' was not declared in this scope please help

[@yatendrakumar9013]

Sir Arduino Uno smd use kar sakte hai same programming par

[@MuhammadAnsar]

haan g kr skty hy

[@yatendrakumar9013]

Thnx sir

[@circuitideas1981]

Really every project of yours is very beautiful.

[@MuhammadAnsar]

Thank you! Cheers!

[@dipeshvarve8526]

Sir please can you please tell proteus version which you used ,can't able to simulate with latest one

[@MuhammadAnsar]

proteus 8.12

[@dipeshvarve8526]

Ty sir, could you please share the link to download the same

[@utsavmungra5083]

Can we use liquid crystal library here what should we change in code can u guide me

[@Project_diaries21]

If there is a person standing in the parking slot (instead of vehicle) then it will also show that slot as full however there is no vehicle in that slot. How would u resolve this issue??

[@sanjeevmahatha7288]

We can integrate this hardware system with ticketing software for actual status of the parking no based on IR sensor results

[@engr.talhaahmed161]

Nice ansar bhae ... Kafi time bad vid upload ki ap ny vsy

[@MuhammadAnsar]

haan g eid thi tu time ni mila

[@engr.talhaahmed161]

Sahi

[@PediredlaGaganasindu]

sir if i use latest version of Arduino uno but its not yhe version u used ? so what's the solution sir

[@Sk.Sir15]

Hlo sir i am a big fan of yours I am a Atl teacher can you help me in making different different project I have need 1 hour a week for this i will pay you

[@skullyt6698]

Assalamu alaikkum ...Sir I'm doing my last year ICT project ..so can u explain about this car parking system deeply...plz

[@kumar7gamer952]

Sir number

[@rahmahtafish]

What is the job of (flag1) and (flag2)in the code?

[@rojabs3938]

Sir instead of doing soldering, can we use male and female connector

[@MuhammadAnsar]

yes use this

[@Success_01995]

bro i done with 3 slots using ir sensors can you tell me the program'

[@congnghi381]

Really every project of yours is very beautiful. * but error : Car_Parking_System_LCD-__111:5:53: error: 'POSITIVE' was not declared in this scope LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

[@MuhammadAnsar]

add the LiquidCrystal_I2C library

[@mohshahnavaj5737]

Sir, electric heater pe project provide kra denge aap..?

[@YashKumar-qu8vg]

mixed model AVR2.DLL failed to authorize - Missing or invalid Customer Key.. error like this is coming on proteus. please help to solve it

[@tanishdeori9586]

Bhai jaan Kya main Arduino uno ki jagah nano Laga kar Aapke code ko paste kardu to Kya woh kaam karega

[@Divyanshu_R.S]

Kya ya Arduino nano ka use kiya ja sakta hai ?

[@MuhammadAnsar]

haaan g kiya ja skta hy

[@ashwitharapelli]

Which coding language is used for implementation ?

[@vayudarji]

Bro why you don't take power input from arduino

[@rishikeshnate7855]

hello what if is use 16*2 lcd ? will the programme change?

[@MuhammadAnsar]

Yes, the program will have to be changed

[@BabluBablu-rk3dz]

Sir please help me this given project done with all connections but POSITIVE DECLARATION ERROR comming ,, we used crystal library nd i2c library but no results please help us our submission date is 1 March please

[@MuhammadAnsar]

check this video:- kzbin.info/www/bejne/oXipqnWmlLWBY9U

[@superberkah458]

great job. Hi Bro, is it possible if I'm using servo motor 24 V and 6 meters leight of the boom?

[@computerworld1349]

Sir can you please give me the link having all pictures of all objects like parking board stop board etc

[@sayedahmedalalawi2442]

I get error for('POSITIVE' was not declared in this scope ) I tried to solve it. can you give library file for it to solve the problem

[@nontoxicwibe3346]

Hello Bro can you please provide your code for this project

[@ei-020harishreddy4]

Bro do you Got Solution of that Problem

[@anstutimishra6383]

Bro go to your program file and delete the crystalfile And copy and paste there given newliquidcrystal file And compile the program successfully

[@sonurj46]

@@anstutimishra6383 bro i need 20×4 code

[@rohithrao1255]

Remove Liquid Crystal file And add New liquid crystal

[@congnghi381]

Thank -Very Good

[@MuhammadAnsar]

Welcome 👍

[@himan1601]

Compilation error: 'POSITIVE' was not declared in this scope Can u help me with this error? I have installed LiquidCrystal_I2C library

[@aswinkannoth]

bro if two cars enter at entrance and exit sensors at same time what will be the response of the LCD display

[@MuhammadAnsar]

bro, only one car will come at a time

[@huyphamuc6372]

Tech vid Indian voice Useful Thumbs up

[@fight9457]

How can i connect GSM Module and wifi module to hardware?to use mobile application Will the code vary so much?

[@MuhammadAnsar]

yes code will have to change

[@fight9457]

@@MuhammadAnsar Can you tell me how please?

[@nikhathsultana5071]

hey thanks for the tutorial and help , little request can you please change the ir sensors near the barrier and update it with ultrasonic sensors and also add red and green led in each slot whenever there is a car in any slot the red led will be turned on and if there is no car the green led will be on .

[@MuhammadAnsar]

ok i will try

[@nikhathsultana5071]

@@MuhammadAnsar can I get your email id

[@dreamstudiodslr5139]

Ansar bhai ap ki video dekh k bohot seka he Sir ap se ek request he k 16x2 lcd k leye custom font creat karna chahta hu plz mery help kare

[@MuhammadAnsar]

haaan g btay kia help kr skta ho ap ki

[@dreamstudiodslr5139]

Sir seven segment style ki font 16x2 lcd me lana chahta hu

[@AATEvan]

vai apne arduino UNO ko board ke sath cipkane ki liye jo tape use kiya hein uska nam kya hein??

[@bhuvneshmittal6080]

Double sided tape

[@XViBrye1607]

great work! newbie from the world of Arduino is it the same if i use LCD TFT ?

[@MuhammadAnsar]

Yes, it is

[@XViBrye1607]

Sir I really do appreciate, if u dont mind kind i ask for your email so that i can ask for more about my thesis. Since its related to your video. Its a big help thank you

[@kumar7gamer952]

@@MuhammadAnsar sir your number pez give me

[@ghadeersaad8810]

Should we connect arduino before running the arduino IDE ؟؟ when I debug it show me massage “ Liquidcrystal- I2c.h:no such file or directory

[@MuhammadAnsar]

check this video:- kzbin.info/www/bejne/oXipqnWmlLWBY9U

[@ghadeersaad8810]

i had deleted the LiquidCrystal_I2C libraries and install again and still the same problem @@MuhammadAnsar

[@roshnirawat7716]

I have a question that if the car stopped in the barrier for a while, then what condition should be put in programming that the barrier will remain at the same time for some time and if the parking is big then give the exit and entry derection

[@roshnirawat7716]

Sir reply please

[@YashKumar-qu8vg]

Sketch uses 6264 bytes (19%) of program storage space. Maximum is 32256 bytes. Global variables use 546 bytes (26%) of dynamic memory, leaving 1502 bytes for local variables. Maximum is 2048 bytes. this output is coming on compiling code

[@sangeertht1710]

same issue😞

[@mahadevgaikwad192]

​@@sangeertht1710 bro this is not error you can do with this also

[@danielmartinez-hi7sh]

Is it possible with an mg90s servomotor?

[@MuhammadAnsar]

yes it possible

[@princehuamai9659]

Sir are you using Arduino UNO or Arduino UNO R3. Sir plz confirm sir it's request.

[@princehuamai9659]

Sir because i have got different types of Arduino. Which is not matching with your Arduino sir plz cofirm uno or r3. Which one are you using.

[@rojabs3938]

He used Arduino Uno

[@tridentgamerz999]

Sir error: 'POSITIVE' was not declared in this scope

[@aniket7179]

Sir this program showing error :'POSITIVE' was not declared in this scope.... Please give me solution

[@LuckyKarthik-ws9fx]

bro are you find it whats answer to this

[@LuckyKarthik-ws9fx]

reply bro

[@aniket7179]

@@LuckyKarthik-ws9fx nothing found

[@LuckyKarthik-ws9fx]

What u do now

[@aniket7179]

@@LuckyKarthik-ws9fx i leave that project 😂

[@hardikkapoor7217]

Hello sir your website cannot access.When I open it then it show 503 error. Can you share code and diagram through medium. Thank your and Reply me ASAP.😊😊

[@MuhammadAnsar]

Check again

[@Mertarslan2424]

Doesn't it make any difference if I use one of the two, the original or the clone of Ardunio uno, right?

[@vmoxofficial2233]

There's not problem

[@krynu62]

Here is the solution for this error: 'POSITIVE' was not declared in this scope .....LCD from the old library: LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); to the new: LiquidCrystal_I2C lcd(0x27,20,4);

[@anjalikulkarni746]

Does this work after connecting to arduino?

[@krynu62]

​​@@anjalikulkarni746I'm working in the ISIS Proteus emulator and it worked...so I guess it works in practice.But I made some changes in the code

[@krynu62]

​@@anjalikulkarni746 I made some minor changes to the code and yes it worked

[@anjalikulkarni746]

Can you please tell the changes

[@krynu62]

@@anjalikulkarni746 delete The instruction lcd.begin(20,4) and Add these instructions below else if (digitalRead(ir_enter) == HIGH && flag1 == 1 && flag2 == 0) { myservo.write(90); // Fermeture de la barrière flag1 = 0; } else if (digitalRead(ir_back) == HIGH && flag2 == 1 && flag1 == 0) { myservo.write(90); // Fermeture de la barrière flag2 = 0; }

[@danghoang1010]

Can you tell me what is "Positive" in the code?

[@juinxin6634]

Hi bro may i ask , is it possible to connected wifi to display the information on mobiles app?

[@MuhammadAnsar]

yes

[@aanaldd6091]

can i get a library for liquid crystal i2c include with positive cause i got error with positive was not declared can you help me

[@keshavmaheshwari7438]

same bro

[@rizwanazmat5446]

Bhi jan compiler kon sa use karte ha code ke lye

[@nugrahoa]

can the data from arduino tranfer to nodemcu8266?, i want to make a realtime slot display in an app . sir , please answer my question

[@MuhammadAnsar]

Yes, it can

[@nugrahoa]

bro your website deactivated

[@sk9365]

sir I am in problem in LCD code in which POSITIVE is in error and i have install the given library

[@pependorisindo]

popiči aj ja tak mam

[@kumar7gamer952]

How to add sir

[@OmarAhmed-rb4rx]

plz i have question if need open servo with RFID just open and close Servo with IR proximity how to coding this

[@muhammadfakhir5077]

Have you done this thing?

[@faheemahmed8712]

Ma Shaaa Allah

[@MuhammadAnsar]

thank you

[@RealtyElectronics]

Sir kya ek aysa programable robot banaa sakte hai jise ham mit app se he program kare or upload kare. For example ham mit app par type kare ke forward jai delay 200 backward jai or stop ho jai phir ise bluetooth ke help se arduino me send kar de.

[@ahsanhabibstudent7843]

sir i have some programe error in line 5 "posetive" was not declared in this scope how to solve this problem

[@MuhammadAnsar]

Add the liquid crystal i2c LCD library

[@pependorisindo]

@@MuhammadAnsar dik to mi nepomohlo kámo

[@kafukodenis1301]

@@MuhammadAnsar I added but the error is still persisting

[@kafukodenis1301]

@@MuhammadAnsar I added but the error is still persisting

[@AMALKTMCA23-25]

Can we use 16*2 display instead of 20*4

[@petermabusela9514]

does it work? where do i have to adjust my code?

[@AMALKTMCA23-25]

Ys bro,it can work easily get help with chatgpt ,you have just adjust the connection according to it

[@bhuvneshtech295]

can I add iot here using Nodemcu ,if yes , can u tell how?

[@astaclover3120]

Sir... Proteus mai LCD display nhi kr rha hai... aur cpu overload ka error arha hai proteus mai.. help kro sir final year project hai!!!

[@MuhammadAnsar]

arduino ma i2c lcd ki library add kry

[@user-kg2ds1yc7r]

Hello, I am making the same circuit as yours with Mega 2560, 20x4 LCD, and 8 IR sensors. I am using NewliquidCrystal from a video from 4 years ago, but the LCD is complaining and no text is displayed. I don't think it's an address issue, but why is that?

[@zohaibmalik1761]

check your pins

[@Mertarslan2424]

what is the name of the cables you use to make the connection?

[@durgaprasadk6138]

Normal wires and jumper wires

[@Mertarslan2424]

Are you using a bredboard for Arduino

[@MuhammadAnsar]

no

[@Mertarslan2424]

Can you specify the datasheet or the necessary software that you have installed on the computer for ardunio that you are using in the project?

[@MuhammadAnsar]

Arduino IDE

[@botanismaeel7246]

Which arduino package used for this project?

[@MuhammadAnsar]

Arduino UNO

[@hopstermixk9233]

sir hello what do you call the long wire one?

[@user_8421]

Hello I'm trying to make the same project but the IR sensor type that i got have 4 pin ( GND . VCC . D0 . A0 ) unlike the one that you use that have only 3 can you please tell in this case what should i do?

[@mubeentech128]

I also face this problem can you help me

[@user_8421]

@@mubeentech128 yeah sure no problem Its very easy first you need to know the difference between the pin A0 & D0 A0 is for analog output that you can later use them in Arduino program to measure the distance between the IR sensor and the subject so it will give you the real distance for ex ( ir value = 20 cm ) D0 is for digital output so if the subject is present the sensor will give me value 1 if the subject is not in front of the IR sensor its give me the value 0 ( it's like a boolean either 1 or 0 ) in this particular project you only need to use D0 of you iR sensor's and attach them to Digital pins in your Arduino and then use the blue square box in your iR sensors to adjust the distance that you want it to be active in

[@yostinchacon7542]

Hello, I am working with Your example but this send me a error, can you help me with this? fatal error: LiquidCrystal_I2C.h: No such file or directory #include compilation terminated. exit status 1 Compilation error: LiquidCrystal_I2C.h: No such file or directory

[@MuhammadAnsar]

check this video:- kzbin.info/www/bejne/oXipqnWmlLWBY9U

[@hopstermixk9233]

we have a thesis project and this parking system is our project and we dont know how to operate it we buy a package arduino but mostly the needed of our system is not in the package and the code it is always error sir i hope you can help us

[@micwn7686]

Can you send me the thesis?

[@yatendrakumar9013]

Sir, Arduino ka coad Kanha se milega Please sir batadijiye

[@MuhammadAnsar]

Check the video description

[@rakeshkumardwivedi6621]

Can we use 5V 1Amp Power Adaptor

[@MuhammadAnsar]

yes use this

[@dndesigns3644]

I got problem with code line 4 liquid crystal _i2c

[@MuhammadAnsar]

check the liquid crystal _i2c library

[@GabrielSkaPunk18]

Buenas, necesito ayuda para diseñar el mismo prototipo el myopenlab or labview

[@bhuvneshmittal6080]

Hello , the simulation file is not opening and Proteus app automatically closed , I using Proteus 8 professional , help

[@MuhammadAnsar]

Proteus 8.12

[@mdatifkhan7164]

with hope of reply., sir, I download your simulation file but not working !!? pls help..

[@MuhammadAnsar]

but why?

[@afreenfatima7244]

Assalamualaikum. Kya aap arduino uno library install karne ki link share kar sakte ?

[@MuhammadAnsar]

وَعَلَيْكُمُ ٱلسَّلَامُ وَرَحْمَةُ ٱللَّٰهِ وَبَرَكَاتُهُ check this video:- kzbin.info/www/bejne/oXipqnWmlLWBY9U

[@boniekandrear761]

help me sir Arduino: 1.8.16 (Windows 10), Board: "Arduino Uno" parkiran_yoga:4:53: error: 'POSITIVE' was not declared in this scope LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); ^~~~~~~~ exit status 1 'POSITIVE' was not declared in this scope This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

[@MuhammadAnsar]

add the i2c lcd library

[@boniekandrear761]

@@MuhammadAnsar done, but still not working

[@ate1903]

hai..i have error Compilation error: 'POSITIVE' was not declared in this scope can you help me?

[@congnghi381]

Above error if selecting Files--Preferences-- \Arduino IDE v1.89-2025\sketchbook Done into Sketch--Include Libary--Add Zip Libary--Select files --New-LiquidCrystal-master.zip --The error will go away

[@ghadeersaad8810]

How many wires do we need for this ?

[@MuhammadAnsar]

almost 40 Pin Line

[@stubbyfalcon69420]

you are amazing g ay

[@MuhammadAnsar]

thank you

[@stubbyfalcon69420]

@@MuhammadAnsar no thank u

[@Mohkira1]

From where do I get the wires that you used

[@ANaND-jl9eh]

normal electrical shop

[@seenivas1402]

Im having an error called Positive was not declared in this scope

[@Divyanshu_R.S]

Can we use 16×4 LCD Display,

[@MuhammadAnsar]

ni data show ni ho ga pora

[@chiragpurirn1822]

Sir can we use arduino nano for same Pls reply 🙏🙏🙏

[@alokesh5968]

You can

[@anstutimishra6383]

Positive was not declared in this scope sir iska aap salution bta do mera ye Major project h sir

[@MuhammadAnsar]

video ki description ma jo link dia hoa hy es ma hi positive file bhi hy

[@anstutimishra6383]

Aap coment me uska link provided kra do plss

[@anukumari4392]

@@anstutimishra6383 do you find the solution

[@LuckyKarthik-ws9fx]

bro its showing positive was not showing declared plz reply to me fast i have science fare bro

[@Dol3kk]

Hello Sir, I have a question. I have got problem with 5 line (positive). I have got all library, and I add LiquidCrystal_I2C. Could u help me pleas?

[@MuhammadAnsar]

Check the your i2c library example and add the line 5

[@PatricPG]

encontraron la solución?

[@anugraharameshkumar2837]

what was the software used in this project

[@alokesh5968]

Arduino ide

[@alokesh5968]

Arduino ide

[@blaisekim5511]

Hello help me I need to continue me I am blocked here is the error message: 'POSITIVE' was not declared in this scope.

[@MiraBelleMagpantay]

How can i fix when I verify the code and then it displays liquidcrystal_I2C.h has no such file or directory

[@suma.p729]

Same here. Did u get the solution for that

[@ArjunKumar-ox6yc]

include //includes the servo library #include #include LiquidCrystal_I2C lcd(0x27, 20, 4); Servo myservo; #define ir_enter 2 #define ir_back 4 #define ir_car1 5 #define ir_car2 6 #define ir_car3 7 #define ir_car4 8 #define ir_car5 9 #define ir_car6 10 int S1=0, S2=0, S3=0, S4=0, S5=0, S6=0; int flag1=0, flag2=0; int slot = 6; void setup(){ Serial.begin(9600); pinMode(ir_car1, INPUT); pinMode(ir_car2, INPUT); pinMode(ir_car3, INPUT); pinMode(ir_car4, INPUT); pinMode(ir_car5, INPUT); pinMode(ir_car6, INPUT); pinMode(ir_enter, INPUT); pinMode(ir_back, INPUT); myservo.attach(3); myservo.write(90); lcd.begin(20, 4); lcd.setCursor (0,1); lcd.print(" Car parking "); lcd.setCursor (0,2); lcd.print(" System "); delay (2000); lcd.clear(); Read_Sensor(); int total = S1+S2+S3+S4+S5+S6; slot = slot-total; } void loop(){ Read_Sensor(); lcd.setCursor (0,0); lcd.print(" Have Slot: "); lcd.print(slot); lcd.print(" "); lcd.setCursor (0,1); if(S1==1){lcd.print("S1:Fill ");} else{lcd.print("S1:Empty");} lcd.setCursor (10,1); if(S2==1){lcd.print("S2:Fill ");} else{lcd.print("S2:Empty");} lcd.setCursor (0,2); if(S3==1){lcd.print("S3:Fill ");} else{lcd.print("S3:Empty");} lcd.setCursor (10,2); if(S4==1){lcd.print("S4:Fill ");} else{lcd.print("S4:Empty");} lcd.setCursor (0,3); if(S5==1){lcd.print("S5:Fill ");} else{lcd.print("S5:Empty");} lcd.setCursor (10,3); if(S6==1){lcd.print("S6:Fill ");} else{lcd.print("S6:Empty");} if(digitalRead (ir_enter) == 0 && flag1==0){ if(slot>0){flag1=1; if(flag2==0){myservo.write(180); slot = slot-1;} }else{ lcd.setCursor (0,0); lcd.print(" Sorry Parking Full "); delay(1500); } } if(digitalRead (ir_back) == 0 && flag2==0){flag2=1; if(flag1==0){myservo.write(180); slot = slot+1;} } if(flag1==1 && flag2==1) {delay (1000); myservo.write(90); flag1=0, flag2=0; } delay(1); } void Read_Sensor() {S1=0, S2=0, S3=0, S4=0, S5=0, S6=0; if(digitalRead(ir_car1) == 0){S1=1;} if(digitalRead(ir_car2) == 0){S2=1;} if(digitalRead(ir_car3) == 0){S3=1;} if(digitalRead(ir_car4) == 0){S4=1;} if(digitalRead(ir_car5) == 0){S5=1;} if(digitalRead(ir_car6) == 0){S6=1;} }

[@alokesh5968]

#include //includes the servo library #include #include LiquidCrystal_I2C lcd(0x27,20,4); Servo myservo; #define ir_enter 2 #define ir_back 4 #define ir_car1 5 #define ir_car2 6 #define ir_car3 7 #define ir_car4 8 #define ir_car5 9 #define ir_car6 10 int S1=0, S2=0, S3=0, S4=0, S5=0, S6=0; int flag1=0, flag2=0; int slot = 6; void setup() { Serial.begin(9600); pinMode(ir_car1, INPUT); pinMode(ir_car2, INPUT); pinMode(ir_car3, INPUT); pinMode(ir_car4, INPUT); pinMode(ir_car5, INPUT); pinMode(ir_car6, INPUT); pinMode(ir_enter, INPUT); pinMode(ir_back, INPUT); myservo.attach(3); myservo.write(90); lcd.init(); lcd.backlight(); lcd.setCursor (0,1); lcd.print(" CAR PARKING "); lcd.setCursor (0,2); lcd.print(" SYSTEM "); delay (2000); lcd.clear(); Read_Sensor(); int total = S1+S2+S3+S4+S5+S6; slot = slot-total; } void loop(){ Read_Sensor(); lcd.setCursor (0,0); lcd.print(" Have Slot: "); lcd.print(slot); lcd.print(" "); lcd.setCursor (0,1); if(S1==1) { lcd.print("S1:Fill "); } else { lcd.print("S1:Empty"); } lcd.setCursor (10,1); if(S2==1) { lcd.print("S2:Fill "); } else{lcd.print("S2:Empty");} lcd.setCursor (0,2); if(S3==1){lcd.print("S3:Fill ");} else{lcd.print("S3:Empty");} lcd.setCursor (10,2); if(S4==1){lcd.print("S4:Fill ");} else{lcd.print("S4:Empty");} lcd.setCursor (0,3); if(S5==1){lcd.print("S5:Fill ");} else{lcd.print("S5:Empty");} lcd.setCursor (10,3); if(S6==1){lcd.print("S6:Fill ");} else{lcd.print("S6:Empty");} if(digitalRead (ir_enter) == 0 && flag1==0){ if(slot>0){flag1=1; if(flag2==0){myservo.write(180); slot = slot-1;} } else { lcd.setCursor (0,0); lcd.print(" Sorry Parking Full "); delay(1500); } } if(digitalRead (ir_back) == 0 && flag2==0){flag2=1; if(flag1==0){myservo.write(180); slot = slot+1;} } if(flag1==1 && flag2==1){ delay (1000); myservo.write(90); flag1=0, flag2=0; } delay(1); } void Read_Sensor() { S1=0, S2=0, S3=0, S4=0, S5=0, S6=0; if(digitalRead(ir_car1) == 0){S1=1;} if(digitalRead(ir_car2) == 0){S2=1;} if(digitalRead(ir_car3) == 0){S3=1;} if(digitalRead(ir_car4) == 0){S4=1;} if(digitalRead(ir_car5) == 0){S5=1;} if(digitalRead(ir_car6) == 0){S6=1;} }

[@alokesh5968]

Check line no. 30 and 31

[@Gamer-hc3yt]

Hello, Lcd display pe hlkuch print nahi ho raha h, lekin reset karne pe light display ki on/off ho rahi h. please give me solution.

[@MuhammadAnsar]

Check this video:- kzbin.info/www/bejne/oXipqnWmlLWBY9U

[@fight9457]

Sir i did that for my final project and the supervisor told me to make mobile application for this, can you help me PLEASE! Please, i have no time

[@MuhammadAnsar]

tell me how I can help you

[@fight9457]

@@MuhammadAnsar Well, i knew that i need Node MCU ESP8266 ,GSM Module and Piezoelectric Sensor Now i need to know how to connect them,Can you help me?

[@JainamShah-ub9ns]

compilation error : liquidcrystal.h no such file or directory plzz help to solve this error