RDM channel size from 3 to 4

Anyone knowing how to increase the number of channels from 3 to 4. The example have 3 channels, RGB for LED's, I would like to add an additional channel. I can't find where to change 3 to 4, anyone who knows where to change it?

[peternewman]

Hi @Jabadabado ,

Setting the 3 to a 4 here will change the number of channels it says it needs via RDM:

DmxSerial2/examples/RDMSerialRecv/RDMSerialRecv.ino

Line 66 in f4722df

3, // footprint

From a PWM output point of view, it's being done here:

DmxSerial2/examples/RDMSerialRecv/RDMSerialRecv.ino

Lines 43 to 58 in f4722df

	const int RedPin = 9; // PWM output pin for Red Light.
	const int GreenPin = 6; // PWM output pin for Green Light.
	const int BluePin = 5; // PWM output pin for Blue Light.
	// color: #203050 * 2
	#define RedDefaultLevel 0x20 * 2
	#define GreenDefaultLevel 0x30 * 2
	#define BlueDefaultLevel 0x50 * 2
	// define the RGB output color
	void rgb(byte r, byte g, byte b)
	{
	analogWrite(RedPin, r);
	analogWrite(GreenPin, g);
	analogWrite(BluePin, b);
	} // rgb()

And:

DmxSerial2/examples/RDMSerialRecv/RDMSerialRecv.ino

Lines 93 to 102 in f4722df

	// set default values to dark red
	// this color will be shown when no signal is present for the first 5 seconds.
	DMXSerial2.write(start + 0, 30);
	DMXSerial2.write(start + 1, 0);
	DMXSerial2.write(start + 2, 0);
	// enable pwm outputs
	pinMode(RedPin, OUTPUT); // sets the digital pin as output
	pinMode(GreenPin, OUTPUT);
	pinMode(BluePin, OUTPUT);

And

DmxSerial2/examples/RDMSerialRecv/RDMSerialRecv.ino

Lines 132 to 151 in f4722df

	if (now % 1000 < 500) {
	rgb(200, 200, 200);
	} else {
	rgb(0, 0, 0);
	} // if
	} else if (lastPacket < 30000) {
	// read recent DMX values and set pwm levels
	analogWrite(RedPin, DMXSerial2.readRelative(0));
	analogWrite(GreenPin, DMXSerial2.readRelative(1));
	analogWrite(BluePin, DMXSerial2.readRelative(2));
	} else {
	#if defined(SERIAL_DEBUG)
	Serial.println("no signal since 30 secs.");
	#endif
	// Show default color, when no data was received since 30 seconds or more.
	analogWrite(RedPin, RedDefaultLevel);
	analogWrite(GreenPin, GreenDefaultLevel);
	analogWrite(BluePin, BlueDefaultLevel);

[wad77]

Hello, I'm a complete newbie to Arduino. Please write how to make 6 PWM channels on Arduino UNO. I beg you very much. I don't know how to edit code. THANK YOU VERY MUCH!

[mathertel]

Hello, I'm a complete newbie to Arduino. Please write how to make 6 PWM channels on Arduino UNO. I beg you very much. I don't know how to edit code. THANK YOU VERY MUCH!

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