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
- Blynk
- HCSR04 ultrasonic sensor
Installed Libraries
