Arduino Tutorial #22 Ultrasonic sensor counter with LCD display

Arduino Tutorial #22 Ultrasonic sensor counter with LCD display
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#include (LiquidCrystal.h) // instead of parenthesis () put angle bracket as YouTube description does not allow angle bracket
#define trigPin 13
#define echoPin 8
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int counter = 0;
int currentState = 0;
int previousState = 0;

void setup() {
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
}

void loop() {
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance (= 10){
currentState = 1;
}
else {
currentState = 0;
}
delay(200);
if(currentState != previousState){
if(currentState == 1){
counter = counter + 1;
}
}
}

[GreenBoyPocket]

Hello, thank you for sharing, I was wondering how would it be to "translate" this to mBlock so children can implement this to Arduino.

[MusatechU]

Please make winding machines counting meter digital ya tips do

[heyuthea]

how about the display that have I2C backpack attach to it, how do you connect the wire ?(if possible with no variable resistor include)
oh and one more thing, can you have led blink when the counter count the object passing through . i really wanna know how to make it because it my final project . please can you make a video about it . thanks

[hsyweightlossdiet]

Can i use Arduino Nano for this project ??

[dayannechilatra]

Robotica DIY
Thanks for your project.
do you know how to make it unidirectional with the HC SR04? for example: only enter.

[haikalakbar]

i think u forgot about to change the previousState value each loop, because it keep increasing the counter value if u stand still in front of the sensor

[jay-cgonzales]

can you create a video with reset button thanks
or using infrared sensor

[andrewgeeks]

when you keep something before the sensor, it just adds on....please someone give me a code so that it counts 1 even if the object stands before it

[divyakharg]

Thank You dude. This video was of great help.

[deeanafamily]

can we use 7 segment display instead of lcd??

[vrushalikatta]

can you give program for bidirectional counter using LCD and ultrasonic sensor

[Jungkook_luv]

Shall we do this project without potentiometer

[briyansitinjak]

My ping sensor always count. How i can resolve it?

[abassahmed]

What will happens if the object stays in front of the sensor, if it will keep on increasing what should be done to avoid

[ahmedcataloglu]

good work, but the problem is what if an object stops in front of the sensor, the sensor is still counting ;)

[mohammadubed]

Good hope it's work when I will made it