Why won't my blynk display data from my sensor? can anyone help me fix it?

[chis]

[Unformatted code removed by moderator]

[PeteKnight]

Some information about what does and does not work would be useful.

Is your device showing as Online in Blynk?
Are your sensor values showing in the serial monitor and on your LCD?

How are your V4 to V9 datastreams configured?

Why are you using delays in your myTimerEvent function?

Pete.

[chis]

i learn that from my teacher, may i show you my project code by my self
for sensor values is showing on serial monitor and my lcd.
my V9 : interger min 0 max 1
my v4 : interger min 0 max 1000

my trouble is just the sensor values not showing on blynk web and blynk app on android.
this my project code.

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
#define SENSOR_PIN_A0 36 // Pin A0 (GPIO 36)
#define SENSOR_PIN_A1 34 // Pin A1 (GPIO 34)
#define PinRelay 5      // Pin D5 sebagai penggerak relay

#define S0 13 // Pin D13 sebagai S0 untuk sensor TCS3200
#define S1 12 // Pin D12 sebagai S1 untuk sensor TCS3200
#define S2 27 // Pin D27 sebagai S2 untuk sensor TCS3200
#define S3 26 // Pin D6 sebagai S3 untuk sensor TCS3200
#define sensorOut 14 // Pin D14 sebagai SensorOut untuk sensor TCS3200

#define BLYNK_TEMPLATE_ID "TMPL6R2vQmul9"
#define BLYNK_TEMPLATE_NAME "kumohon berhasil"
#define BLYNK_AUTH_TOKEN "v4aPowk1abXoB6I7vk3MdZiPLbaxBc_-"

BlynkTimer timer;
bool Relay = false;

char auth[] = "v4aPowk1abXoB6I7vk3MdZiPLbaxBc_-"; // Enter your Auth token
char ssid[] = "Travshopp"; // Enter your WIFI SSID
char pass[] = "cuanterus27"; // Enter your WIFI password


void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);

  pinMode(SENSOR_PIN_A0, INPUT);
  pinMode(SENSOR_PIN_A1, INPUT);
  pinMode(PinRelay, OUTPUT);
  digitalWrite(PinRelay, HIGH); // Relay dimatikan saat awal program berjalan

  lcd.begin();
  lcd.backlight();
  lcd.setCursor(1, 0);
  lcd.print("Sistem Penyiram");
  lcd.setCursor(1, 1);
  lcd.print("Tanaman Otomatis");
  delay(3000); // Tahan tampilan selama 3 detik

  WiFi.begin(ssid, pass); // Menghubungkan ESP32 dengan WiFi
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  pinMode(S0, OUTPUT);
  pinMode(S1, OUTPUT);
  pinMode(S2, OUTPUT);
  pinMode(S3, OUTPUT);
  pinMode(sensorOut, INPUT);

  digitalWrite(S0, HIGH);
  digitalWrite(S1, LOW);

  timer.setInterval(5000L, sensorYL69);
  timer.setInterval(5000L, PhSensor);
  timer.setInterval(5000L, colorSensor);
}

BLYNK_WRITE(V9) {
  Relay = param.asInt();

  if (Relay == 1) {
    digitalWrite(PinRelay, LOW);
   
  } else {
    digitalWrite(PinRelay, HIGH);
   
  }
}


void sensorYL69() {
  float sensorValueA0 = analogRead(SENSOR_PIN_A0)/ 1023.0 * 100.0;
   int soilPersen = (100.00 - ((sensorValueA0 / 1023.00) * 100.00));

  Blynk.virtualWrite(V6, sensorValueA0);
  Serial.print("ADC Soil: ");
  Serial.println(sensorValueA0);

  Serial.print("Kelembaban Tanah: ");
  Serial.print(soilPersen);
  Serial.println("%");

  if (sensorValueA0 > 300) {
    digitalWrite(PinRelay, LOW);
    lcd.clear();
    lcd.setCursor(10, 0);
    lcd.print("KERING");
     Blynk.virtualWrite(V9, PinRelay, LOW);
  } else {
    digitalWrite(PinRelay, HIGH);
    lcd.clear();
    lcd.setCursor(10, 0);
    lcd.print("BASAH");
    Blynk.virtualWrite(V9, PinRelay, HIGH);
  }
 lcd.setCursor(0, 0);
  lcd.print("Adc=");
  lcd.print(sensorValueA0);
  delay(5000); // Menunggu 5 detik sebelum membaca kembali kelembapan
}

void PhSensor() {
  int sensorValueA1 = analogRead(SENSOR_PIN_A1);
  delay(1000);
  // Rumus didapat berdasarkan datasheet
  float outputValueA1 = (-0.0693 * sensorValueA1) + 7.3855;
  Blynk.virtualWrite(V7, outputValueA1);
 
  lcd.setCursor(0, 1);
  lcd.print("pH = ");
  lcd.print(outputValueA1);
  delay(5000);

  // Print the results to the serial monitor
  Serial.print("sensor ADC= ");
  Serial.print(sensorValueA1);
  Serial.print("  output pH= ");
  Serial.println(outputValueA1);
}

void colorSensor() {
  // Setting the outputs
  pinMode(S0, OUTPUT);
  pinMode(S1, OUTPUT);
  pinMode(S2, OUTPUT);
  pinMode(S3, OUTPUT);

  // Setting the sensorOut as an input
  pinMode(sensorOut, INPUT);

  // Setting frequency scaling to 20%
  digitalWrite(S0, HIGH);
  digitalWrite(S1, LOW);

  // Begins serial communication
  Serial.begin(115200);

  // Setting RED (R) filtered photodiodes to be read
  digitalWrite(S2, LOW);
  digitalWrite(S3, LOW);

  // Reading the output frequency
  int redFrequency = pulseIn(sensorOut, LOW);
  Blynk.virtualWrite(V8, redFrequency);

  // Printing the RED (R) value
  Serial.print("R = ");
  Serial.print(redFrequency);
  delay(100);

  // Setting GREEN (G) filtered photodiodes to be read
  digitalWrite(S2, HIGH);
  digitalWrite(S3, HIGH);

  // Reading the output frequency
  int greenFrequency = pulseIn(sensorOut, LOW);
  Blynk.virtualWrite(V4, greenFrequency);

  // Printing the GREEN (G) value
  Serial.print(" G = ");
  Serial.print(greenFrequency);
  delay(100);

  // Setting BLUE (B) filtered photodiodes to be read
  digitalWrite(S2, LOW);
  digitalWrite(S3, HIGH);

  // Reading the output frequency
  int blueFrequency = pulseIn(sensorOut, LOW);
  Blynk.virtualWrite(V5, blueFrequency);

  // Printing the BLUE (B) value
  Serial.print(" B = ");
  Serial.println(blueFrequency);
  delay(100);

  lcd.setCursor(0, 1);
  lcd.print("R:");
  lcd.print(redFrequency);
  lcd.print("G:");
  lcd.print(greenFrequency);
  lcd.print("B:");
  lcd.print(blueFrequency);
  delay(5000);

}
void loop() {
  Blynk.run();
  timer.run();
}

[PeteKnight]

@chis Please edit your posts, using the pencil icon at the bottom, and add triple backticks at the beginning and end of your code so that it displays correctly.
Triple backticks look like this:
```

Copy and paste these if you can’t find the correct symbol on your keyboard.

Pete.

[chis]

okey, done sir

[PeteKnight]

You’ve done the second one, but not post #1 in this topic.

You’ve also not answered my questions.

Pete.

[chis]

Is your device showing as Online in Blynk?
A : online but just 25 sec and then offline. repeat
Are your sensor values showing in the serial monitor and on your LCD?
A: yes,
How are your V4 to V9 datastreams configured?
A: the datastreams my V9 : interger min 0 max 1
my v4 : interger min 0 max 1000
Why are you using delays in your myTimerEvent function?
A: because my teacher told me to use this myTimerEvent sir.

and then i change my code on reply #3
i hope someone can help my project sir, i was try every tutorial on yt but still not working sir

[PeteKnight]

@chis

How are your V4 to V9 datastreams configured?
A: the datastreams my V9 : interger min 0 max 1
my v4 : interger min 0 max 1000

“V4 to V9” means V4, V5, V6, V7, V8 and V9

The syntax of these Blynk.virtualWrite() commands is incorrect…

@chis

Blynk.virtualWrite(V9, PinRelay, LOW);

@chis

Blynk.virtualWrite(V9, PinRelay, HIGH);

@chis

because my teacher told me to use this myTimerEvent sir

Time to get a new teacher then!
You, and your teacher, should read this…

Keep your void loop() clean

Also this is very bad practice…

@chis

  timer.setInterval(5000L, sensorYL69);
  timer.setInterval(5000L, PhSensor);
  timer.setInterval(5000L, colorSensor);

Because all of your timed functions are trying to execute at the same time, but you aren’t using a multi-tasking MCU.
You should read the “Staggering Timers” part of this tutorial…

Using BlynkTimer or SimpleTimer

Many users seem to struggle with the basic concepts of using BlynkTimer in their projects, despite the excellent discussions and tutorials that exist on this forum, so I thought I’d write a guide that will hopefully help clarify things. It’s rather long, as it attempts to explain the reasoning behind why and how we use timers, and covers some more advanced subjects, but I’ve tried to organise it in a way that helps people to find answers to specific questions… Why use a timer at all? Let’s say …

Pete.

[chis]

Can you give me an example of the code I provided sir? just 1 example to move 1 sensor please

v4 : interger
v5 : interger
v6 : double
v7 : double
v8 : interger
v9 : interger