contoh simulasi iot menggunakan wokwi dan blynk untuk penerapan deteksi ketinggian air pada waduk / pintu air

source code iot untuk mengukur ketinggian air menggunakan simulasi wokwy dan blynk

kode.ino 

#define BLYNK_AUTH_TOKEN "CwaUOQKEPtoken-isisesuaitokenanda"

#define BLYNK_TEMPLATE_ID "TMPisiIdAnda_"

#define BLYNK_DEVICE_NAME "HCSR04"

char auth[] = "CwaUOQKEPtoken-isisesuaitokenanda";

#define BLYNK_PRINT Serial

#include <WiFi.h>

#include <WiFiClient.h>

#include <BlynkSimpleEsp32.h>

#define Echo 15

#define Trig 4

#define Merah 14

#define Kuning 12

#define Hijau 13

char ssid[] = "Wokwi-GUEST";

char pass[] = "";

BlynkTimer timer;

float distance = 0;

float ketinggian = 0;

void ukur_jarak(){

  digitalWrite(Trig,LOW);

  delay(2);

  digitalWrite(Trig, HIGH);

  delay(10);

  digitalWrite(Trig, LOW);

  int duration = pulseIn(Echo, HIGH);

  distance = duration * 0.034 / 2;

  ketinggian = 350 - distance ;

  Serial.print("Jarak: ");

  Serial.print(distance);

  Serial.println(" CM");

  Serial.print("Ketinggian Air : ");

  Serial.print(ketinggian);

  Serial.println(" CM");

 

}

void kirim_blynk(){

Blynk.virtualWrite(V0, ketinggian);

Blynk.virtualWrite(V4, ketinggian);

  if (distance < 100){

  Blynk.virtualWrite(V1, 0);

  Blynk.virtualWrite(V2, 0);

  Blynk.virtualWrite(V3, 1);

}

else if (distance >= 100 && distance <= 150){

  Blynk.virtualWrite(V1, 0);

  Blynk.virtualWrite(V2, 1);

  Blynk.virtualWrite(V3, 0);

}

else if (distance > 150){

  Blynk.virtualWrite(V1, 1);

  Blynk.virtualWrite(V2, 0);

  Blynk.virtualWrite(V3, 0);

}

}

void setup() {

  Serial.begin(115200);

  Blynk.begin(auth, ssid, pass);

  pinMode(Trig, OUTPUT);

  pinMode(Echo, INPUT);

  pinMode(Merah, OUTPUT);

  pinMode(Kuning, OUTPUT);

  pinMode(Hijau, OUTPUT);

  timer.setInterval(2000L,kirim_blynk);

}

void loop() {

   

  digitalWrite(Merah, LOW);

  digitalWrite(Hijau, LOW);

  digitalWrite(Kuning, LOW);

  ukur_jarak();

  int ketinggian = 350 - distance ;

  Serial.print("Jarak: ");

  Serial.print(distance);

  Serial.println(" CM");

  Serial.print("Ketinggian Air : ");

  Serial.print(ketinggian);

  Serial.println(" CM");

  if( distance > 100 && distance < 150)

  {

    Serial.println("Waspada");

    digitalWrite(Kuning, HIGH);

  }

  else if (distance > 0 && distance < 100)

  {

    Serial.println("Bahaya");

    digitalWrite(Merah, HIGH);

  }

  else

  {

    Serial.println("Aman");

    digitalWrite(Hijau, HIGH);

  }

  Blynk.run();

  timer.run();

  delay(500);

}

source code diagram.json

{

  "version": 1,

  "author": "Anonymous maker",

  "editor": "wokwi",

  "parts": [

    { "type": "wokwi-esp32-devkit-v1", "id": "esp", "top": 0, "left": 0, "attrs": {} },

    {

      "type": "wokwi-led",

      "id": "led1",

      "top": -141.2,

      "left": -238.67,

      "attrs": { "color": "red" }

    },

    {

      "type": "wokwi-led",

      "id": "led2",

      "top": -64.2,

      "left": -237.67,

      "attrs": { "color": "yellow" }

    },

    {

      "type": "wokwi-led",

      "id": "led3",

      "top": 30.13,

      "left": -232.67,

      "attrs": { "color": "limegreen" }

    },

    {

      "type": "wokwi-resistor",

      "id": "r1",

      "top": -108.2,

      "left": -187.67,

      "attrs": { "value": "220" }

    },

    {

      "type": "wokwi-resistor",

      "id": "r2",

      "top": -32.54,

      "left": -186.01,

      "attrs": { "value": "220" }

    },

    {

      "type": "wokwi-resistor",

      "id": "r3",

      "top": 61.13,

      "left": -191.01,

      "attrs": { "value": "220" }

    },

    { "type": "wokwi-hc-sr04", "id": "ultrasonic1", "top": -90.2, "left": 129, "attrs": {} }

  ],

  "connections": [

    [ "esp:TX0", "$serialMonitor:RX", "", [] ],

    [ "esp:RX0", "$serialMonitor:TX", "", [] ],

    [ "esp:GND.2", "led3:C", "black", [ "h0" ] ],

    [ "led3:C", "led2:C", "black", [ "v3.07", "h-17", "v-97.33" ] ],

    [ "led2:C", "led1:C", "black", [ "v0.07", "h-11.33", "v-78" ] ],

    [ "led1:A", "r1:1", "green", [ "v0" ] ],

    [ "led2:A", "r2:1", "green", [ "v0" ] ],

    [ "led3:A", "r3:1", "green", [ "v0" ] ],

    [ "r3:2", "esp:D13", "green", [ "v0" ] ],

    [ "r2:2", "esp:D12", "green", [ "v0.07", "h9.34", "v151.33" ] ],

    [ "r1:2", "esp:D14", "green", [ "v0.4", "h22.34", "v218.67", "h115.33" ] ],

    [ "ultrasonic1:GND", "esp:GND.1", "black", [ "v0" ] ],

    [ "ultrasonic1:VCC", "esp:3V3", "red", [ "v0" ] ],

    [ "ultrasonic1:ECHO", "esp:D15", "blue", [ "v0" ] ],

    [ "ultrasonic1:TRIG", "esp:D4", "white", [ "v0" ] ]

  ]

}

Source code library.txt

# Wokwi Library List # See https://docs.wokwi.com/guides/libraries Blynk HCSR04 ultrasonic sensor

Project Libraries

Installed Libraries
• Blynk
• HCSR04 ultrasonic sensor