LED Light strip

[sblop]

I use GT2560 Rev A+, on a I3 Pro B.
To which pin can I attached a LED Strip?

[William]

The board doesn't supply the pin for LED strip. But I think if your LED strip is 12V and just two wires(one is GND,one is 12V), you can use the FAN port pin of GND and 12v.

[sblop]

Hi William,

Thanks for your reply. - I was wondering if I could use eg. pin 24 X-Max or 28 Y-Max and define this in Marlin as the pin for LED control, as these are not used in my setup.

http://reprap.org/wiki/Geeetech_GT2560

I do not know if the pin numbers are the same on the GT2560 Rev A+.

[sblop]

To clear up, I like the "smart lightning" functions.

// Support for Adafruit Neopixel LED driver
//#define NEOPIXEL_RGBW_LED
#if ENABLED(NEOPIXEL_RGBW_LED)
#define NEOPIXEL_PIN 4 // D4 (EXP2-5 on Printrboard)
#define NEOPIXEL_PIXELS 3
//#define NEOPIXEL_STARTUP_TEST // Cycle through colors at startup
#endif

/**
* Printer Event LEDs
*
* During printing, the LEDs will reflect the printer status:
*
* - Gradually change from blue to violet as the heated bed gets to target temp
* - Gradually change from violet to red as the hotend gets to temperature
* - Change to white to illuminate work surface
* - Change to green once print has finished
* - Turn off after the print has finished and the user has pushed a button
*/
#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED) || ENABLED(PCA9632) || ENABLED(NEOPIXEL_RGBW_LED)
#define PRINTER_EVENT_LEDS
#endif

[William]

I don't think you can use the pin 24 and pin 28 because the 24 and 28 are used for X max end-stop and Y max end-stop.
Your LED strip is 5V?
The Pinout you show me is same with GT2560.

[sblop]

Dear William,

Correct. LED Strip is 5v, but needs a signal in order to turn on. Needed 3 pins.

VVC
GND
DIN

Power, is no problem, but I need 1 pin for signal.

In the new marlin firmware you can define a pin number to use for exactly this digital signal, in order to have SMART LED control.

As I use only X-min, Y-min Z-min + BL touch (Z-max) I was wondering what pin I perhaps could use for this purpose.

[url=https://ibb.co/ndCAr5][img]https://thumb.ibb.co/ndCAr5/GT2560_Led_pin.jpg[/img][/url]

https://ibb.co/ndCAr5

[Hedobum]

I'm in this same position...any solutions? I was originally intending on using my WS2812 ring from Octopi for bed lighting during timelapse but I'm having trouble finding any information on how to implement that. I then turned to my GT2560 board for a solution but there doesn't seem to be any usable pins to output the necessary data (or power the ring 5v)....not to mention getting the code for the lights into Marlin.

[William]

Maybe this one will help?

[Hedobum]

LoL...just saw this now. Obviously had notifications off.
It looks like you're suggesting I use the LCD spi? I suppose this would work if I didn't have a screen. I'm in the process of using the SD connection for much the same purpose (TMC2130 drivers). There seems to be a shortage of available pins on this board.

[oktogon71]

Anybody found a way to achieve that ??