Slider doesn't change led brightness

Solved
1

Hello, I have a project to control rgbww LEDs with esp32 via the Blynk app, my problem comes when I want to adjust the brightness of the cold white led, the slider does nothing to the led.

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Blynk.h>
#include <analogWrite.h>
#include <EEPROM.h>

#define r_pri 12
#define g_pri 27
#define b_pri 25
#define c_pri 34
#define w_pri 32
#define r_sec 13
#define g_sec 14
#define b_sec 26
#define c_sec 35
#define w_sec 33

char auth[] = "";
char ssid[] = "";
char pass[] = "";

int rv1;
int gv1;
int bv1;
int pinw;
int pinc;

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 8080);

  pinMode(r_pri, OUTPUT);
  pinMode(g_pri, OUTPUT);
  pinMode(b_pri, OUTPUT);
  pinMode(c_pri, OUTPUT);
  pinMode(w_pri, OUTPUT);
  pinMode(r_sec, OUTPUT);
  pinMode(g_sec, OUTPUT);
  pinMode(b_sec, OUTPUT);
  pinMode(c_sec, OUTPUT);
  pinMode(w_sec, OUTPUT);
}

BLYNK_WRITE(V0) // primary color
{
  rv1 = param[0].asInt();
  gv1 = param[1].asInt();
  bv1 = param[2].asInt();  

  analogWrite(r_pri, rv1);
  analogWrite(g_pri, gv1);
  analogWrite(b_pri, bv1);
}


BLYNK_WRITE(V1) // secondary color
{
  int rv2 = param[0].asInt();
  int gv2 = param[1].asInt();
  int bv2 = param[2].asInt();  

  analogWrite(r_sec, rv2);
  analogWrite(g_sec, gv2);
  analogWrite(b_sec, bv2);
}

BLYNK_WRITE(V2) // warm white
{
  pinw = param[0].asInt();

  analogWrite(w_pri, pinw);
}

BLYNK_WRITE(V3) // cold white
{
  pinc = param.asInt();

  analogWrite(c_pri, pinc);
}

BLYNK_WRITE(V4) // RGB on/off
{
  int v = param.asInt();
  if(v == 0){
    analogWrite(r_pri, 0);
    analogWrite(g_pri, 0);
    analogWrite(b_pri, 0);
  }else{
    analogWrite(r_pri, rv1);
    analogWrite(g_pri, gv1);
    analogWrite(b_pri, bv1);
  }
  Serial.println(v);
}

BLYNK_WRITE(V5) // white on/off
{
  int v = param.asInt();
  if(v == 0){
    analogWrite(w_pri, 0);
  }else{
    analogWrite(w_pri, pinw);
  }
  Serial.println(v);
}

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

Screenshot_2022-02-07-18-54-00-76_980d3cd05c70b8deb691e1a04aeb6aca
Screenshot_2022-02-07-18-54-00-76_980d3cd05c70b8deb691e1a04aeb6aca720×1520 103 KB

2

This should be pinw = param.asInt();

If that doesn’t solve the issue then add some serial print statements to see what values you are getting from the app.

Pete.

1 Like
3

ah, I missed that one.

But the V3 doesn’t trigger anything.

image
image960×1050 27.2 KB

although it gets some value.

4

What does this mean?

Your serial output means nothing unless you post the code that created it.

Pete.

5

I just noticed that you are trying to use GPIO34 as an output, but pins 34 and higher are input only on the ESP32.

Pete.

6

thank you so much sir for helping me, now everything works fine

I’m really sorry if you don’t understand what I’m saying, it’s hard for me to explain in English.

1 Like