[SOLVED] Widget Led represents actual led color

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@claytoncamilleri100 Here is some code I have used to utilise both the zeRGBa and three sliders to adjust physical and widget based LED’s. (adjusting the zeRGBa also adjusts the individual sliders accordingly - showing both the mixed and individual colours as well as intensity).

Virtual RGB LED.png687×515 61.4 KB

The key to getting a “close” resemblance between the physical and virtual is to convert the physical RGB pin data to HEX and send that back to the widget LED via Blynk.setProperty(Vx, "color", HEXstring); // Send formatted HEX colour to vRGB.

This is just part of a larger project, so you will have to extrapolate the code & variables and make adjustments to the virtual pin numbers so that it corresponds with your sketch and app.

BLYNK_WRITE(V20)  // RED slider
{
  rrr = param.asInt(); // get a RED channel value.
  Blynk.virtualWrite(V23, rrr);  // Set RED vLED intensity
  RGBprocess();  // Goto pin data to HEX conversion function.
}
BLYNK_WRITE(V21)  // GREEN slider
{
  ggg = param.asInt(); // get a GREEN channel value.
  Blynk.virtualWrite(V24, ggg);  // Set GREEN vLED intensity
  RGBprocess();  // Goto pin data to HEX conversion function.
}
BLYNK_WRITE(V22)  // BLUE slider
{
  bbb = param.asInt(); // get a BLUE channel value.
  Blynk.virtualWrite(V25, bbb);  // Set BLUE vLED intensity
  RGBprocess();  // Goto pin data to HEX conversion function.
}

//===== zeRGBa widget  - BLYNK Function =====
BLYNK_WRITE(V2)  // zeRGBa widget
{
  rrr = param[0].asInt(); // get a RED channel value.
  ggg = param[1].asInt(); // get a GREEN channel value.
  bbb = param[2].asInt(); // get a BLUE channel value.
  Blynk.virtualWrite(V20, rrr);  // Red slider position.
  Blynk.virtualWrite(V23, rrr);  // Red LED intensity.
  Blynk.virtualWrite(V21, ggg);  // Green slider position.
  Blynk.virtualWrite(V24, ggg);  // Green LED intensity.
  Blynk.virtualWrite(V22, bbb);  // Blue slider position.
  Blynk.virtualWrite(V25, bbb);  // Blue LED intensity.
  RGBprocess();
}

//===== Physical RGB LED Control and HEX conversion =====
void RGBprocess()  // Do all the pin value to HEX conversion, and display it to app widgets
{
  analogWrite(RedP, rrr);  // Write to RED RGB pin.
  analogWrite(GrnP, ggg);  // Write to GREEN RGB pin.
  analogWrite(BluP, bbb);  // Write to BLUE RGB pin.
  String strRED = String(rrr, HEX);  // Convert RED DEC to HEX.
  if (rrr < 16) {
    strRED = String("0" + strRED);  // Buffer with 0 if required.
  }
  String strGRN = String(ggg, HEX);  // Convert GREEN DEC to HEX.
  if (ggg < 16)  {
    strGRN = String("0" + strGRN);  // Buffer with 0 if required.
  }
  String strBLU = String(bbb, HEX);  // Convert BLUE DEC to HEX.
  if (bbb < 16)  {
    strBLU = String("0" + strBLU);  // Buffer with 0 if required.
  }
  String HEXstring = String("#" + strRED + strGRN + strBLU);  // Combine HEX fragments.
  Blynk.run();
  HEXstring.toUpperCase();  // Change HEX value to all upper case for ease of visuals.
  Blynk.setProperty(V8, "color", HEXstring);  // Change background colour of HEX Data Label.
  Blynk.virtualWrite(V8, HEXstring);  // Display HEX data.
  Blynk.setProperty(V9, "color", HEXstring);  // Send formatted HEX colour to vRGB.
  Blynk.virtualWrite(V9, 255);  // Activate vRGB.
}
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