M5Stack AREA AND DISTANCE CALCULATOR

In this project, I'm using an ultrasonic sensor to measure distance and calculate the area of a circle and square and display it on screen

BeginnerFull instructions provided1 hour2,194

Things used in this project

Hardware components

M5Stack ESP32 Basic Core IoT Development Kit

Ultrasonic Sensor - HC-SR04 (Generic)

Jumper wires (generic)

Male-Header 5 Position- 1 Row- Long (0.1")

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering Station, 110 V

Story

For this, we need to understand how the ultrasonic sensor works for this you need to go to this link

https://howtomechatronics.com/tutorials/arduino/ultrasonic-sensor-hc-sr04/

you can also check his youtube channel to know more

DISTANCE MEASUREMENT:

to get the distance in cm we need to multiply the received travel time value from the echo pin by 0.034 and divide it by 2.

AREA CALCULATIONS:

For calculating the Area of square and circle, we need to do some mathematical operations in the program to get Area.
For square A = (side)^2
For circle A = pi(3.14)x(r)^2 for pi in the program I'm using "PI"

CONNECTIONS:

First, I attach some male headers on the sensor to just plug sensor and play

trig----22
echo----21
VCC to VCC and GND to GND

After all connection it will look like this:

now just we need to upload the program and run it

Here we can are able to see the menu PRESS A to calculate the area for square PRESS B to calculate the area for circle PRESS C to measure distance in cm.
After pressing A it calculates Ar of Square.

After pressing B it calculated Ar of Circle.

After pressing C it measures distance.

M5Stack Area

#include<M5Stack.h>
const int trigPin = 22;
const int echoPin = 21;
long dur;
float dis;
float c;
float s;
void setup() {
  M5.begin();
  pinMode(trigPin, OUTPUT); 
  pinMode(echoPin, INPUT);// put your setup code here, to run once:
  M5.Lcd.fillScreen(BLUE);
  M5.Lcd.setTextColor(WHITE);
  M5.Lcd.setTextSize(3);
  M5.Lcd.setCursor(65, 10);
  M5.Lcd.print("AREA CAL: ");
  M5.Lcd.setCursor(3, 35);
  M5.Lcd.println("A FOR SQ:");
  M5.Lcd.println("B FOR CR:");
  M5.Lcd.println("C FOR DIS:");
}

void loop() {
  M5.update();
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  dur = pulseIn(echoPin, HIGH);
  dis= dur*0.034/2;
 
  if (M5.BtnA.wasReleased()) {
     s = dis*dis;
     M5.Lcd.clear(BLUE);
     M5.Lcd.setTextColor(WHITE);
     M5.Lcd.setTextSize(3);
     M5.Lcd.setCursor(65, 10);
     M5.Lcd.print("AREA CAL: ");
     M5.Lcd.setCursor(3, 35);
     M5.Lcd.println("Area(cm):");
     M5.Lcd.setTextSize(9);
     M5.Lcd.setCursor(140, 70);
     M5.Lcd.print(s);// leave
  }
  if (M5.BtnB.wasReleased()) {
     c = ((dis/2)^2)*PI;
     M5.Lcd.clear(BLUE);
     M5.Lcd.setTextColor(WHITE);
     M5.Lcd.setTextSize(3);
     M5.Lcd.setCursor(65, 10);
     M5.Lcd.print("AREA CAL: ");
     M5.Lcd.setCursor(3, 35);
     M5.Lcd.println("Area(cm):");
     M5.Lcd.setTextSize(9);
     M5.Lcd.setCursor(140, 70);
     M5.Lcd.print(c);// leave
  }
  if (M5.BtnC.wasReleased()) {
     M5.Lcd.clear(BLUE);
     M5.Lcd.setTextColor(WHITE);
     M5.Lcd.setTextSize(3);
     M5.Lcd.setCursor(65, 10);
     M5.Lcd.print("DIS CAL: ");
     M5.Lcd.setCursor(3, 35);
     M5.Lcd.println("DIS(cm):");
     M5.Lcd.setTextSize(9);
     M5.Lcd.setCursor(140, 70);
     M5.Lcd.print(dis);
  }
}

Credits

Amaan Javed

19 projects • 4 followers

Student

M5Stack AREA AND DISTANCE CALCULATOR