Send color data to sensors

[BulldogLowell]

@John

an int array, you mean?

can you fit your RGB 3bytes into arduino's 16bit int?

[John]

@BulldogLowell
Was thinking 32bit, sorry....

[BulldogLowell]

yup, you gotta think small!

[John]

@BulldogLowell
Yup, i'm spoiled.....

I will take this option in consideration. It does depends on what users would prefer the most.

[hek]

In the next version RGB values it will be transmitted as a 3 byte binary value over the air.
On the serial line it will probably be split into decimal json like: {red:<0-255>;green:<0-255>;blue:<0-255>}.

If you want to add this to 1.4.1 i would suggest sending data as RGB hex string (to make survive over serial interface).

[John]

Then to make sure there is as less data as possible over the air then this would mean to send data as: "000000" to "ffffff" (so no "#" char)

This also has my personal preference, but want to know how the community would like it to handle it on the node side.

[hek]

Using something like:

string hexstring = "FF3Fa0";
int number = (int) strtol( &hexstring, NULL, 16);
int r = number >> 16;
int g = number >> 8 & 0xFF;
int b = number & 0xFF;

[John]

@hek
Understood, i meant how they want to receive the data. @BulldogLowell would like to receive a long instead of an hex string (if i understood it correctly).

That's the part i'm interested in.

[BulldogLowell]

@John

The 3byte message works here.

Like I mentioned, a little function to put a bow in it.

[arendst]

I agree on the 6 character hex text value. Who will implement this when in 1.4.2?
I have build a RGB neopixel led strip actuator and I would like to control the colours with V_RGB.
Thanks in advance. 😉

[John]

@arendst
Together with an user this is implemented in the current PiDome version available on the build server. He has posted a little tutorial on how to do this. So if you are a PiDome user: http://forum.pidome.org/viewtopic.php?id=58

It is only available in the serial version for testing purposes.

If all goes well, it will be extended to the MQTT version.

[EDIT]It sends hex values which can be extracted as posted above[/EDIT]

[arendst]

@John
Thanks for the response. I use Domoticz as controller which just started to support MySensors. It works great for V_Light and V_Dimmer but lacks RGB color support as the MySensors library lacks color support too.

@hek
Why not update the MySensors library with S_Color and V_RGB. That way Domoticz and other controllers can support color natively.

[hek]

@arendst said:

Why not update the MySensors library with S_Color and V_RGB. That way Domoticz and other controllers can support color natively.

Wanted to add this in the next major release. But if this drags out (time-wise) I might add it to the next minor as well.

[davy39]

Hi guys,
Any news about that ?
Is it now possible to use domoticz's rgb module to control an rgb led strip through an arduino mysensor node ?
Thanks for your help.

[davy39]

up !
Could anyone help me to configure domoticz & mysensors in order to control analog RGB led strip ?

[siklosi]

@davy39
I just made RGB controller for domoticz. So if it's not to late...

#include <MySensor.h>
#include <SPI.h>

#define RED_PIN 3
#define GREEN_PIN 5
#define BLUE_PIN 6

#define NODE_ID 2
#define CHILD_ID 0
#define SKETCH_NAME "RGB_STRIP"
#define SKETCH_VERSION "1.0.0"
#define NODE_REPEAT false

MySensor gw;

long RGB_values[3] = {0, 0, 0};
float dimmer;

void setup() {


  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);

  gw.begin(incomingMessage, NODE_ID, NODE_REPEAT);
  gw.sendSketchInfo(SKETCH_NAME, SKETCH_VERSION);
  gw.present(CHILD_ID, S_RGB_LIGHT, "RGB Strip", false);
  gw.request(CHILD_ID, V_RGB);
}

void loop() {
  gw.process();
}

void incomingMessage(const MyMessage &message) {

  if (message.type == V_RGB) {

    String hexstring = message.getString();
    long number = (long) strtol( &hexstring[0], NULL, 16);
    RGB_values[0] = number >> 16;
    RGB_values[1] = number >> 8 & 0xFF;
    RGB_values[2] = number & 0xFF;
  }
  if (message.type == V_DIMMER) {
    dimmer = message.getInt();
    analogWrite(RED_PIN, int(RGB_values[0] * (dimmer / 100)));
    analogWrite(GREEN_PIN, int(RGB_values[1] * (dimmer / 100)));
    analogWrite(BLUE_PIN, int(RGB_values[2] * (dimmer / 100)));
  }

  if (message.type == V_LIGHT) {
    if (message.getInt() == 0) {
      digitalWrite(RED_PIN, 0);
      digitalWrite(GREEN_PIN, 0);
      digitalWrite(BLUE_PIN, 0);

    }
    if (message.getInt() == 1) {
      analogWrite(RED_PIN, int(RGB_values[0] * (dimmer / 100)));
      analogWrite(GREEN_PIN, int(RGB_values[1] * (dimmer / 100)));
      analogWrite(BLUE_PIN, int(RGB_values[2] * (dimmer / 100)));
    }
  }
}

[Dylano]

@davy39 said:

up !
Could anyone help me to configure domoticz & mysensors in order to control analog RGB led strip ?

Is this option working?
Or perhaps a RGBW strip...