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#1 2021-03-10 16:49:56

seraph
Member
Registered: 2021-03-10
Posts: 8

RGB LED with nanodlp card controller

Hello everyone.

On my printer that I drive with a raspberry pi 3 and a nanodlp control card I would like to use RGB Led DotStar. I would like to control these LEDs with Gcode to display different colors depending on the printing stage.
Do you know if it is possible and if so how to do it?

I know that marlin allows to control this kind of Led, but I think there is no specific PIN for that contrary to the DUET card.

Thanks.

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#2 2021-03-10 17:55:20

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,546

Re: RGB LED with nanodlp card controller

If marlin support it you should take a look at marlin documentation and forum, on nanodlp side you will not experience any issue to send any gcode to RAMPS.

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#3 2021-03-11 08:34:42

seraph
Member
Registered: 2021-03-10
Posts: 8

Re: RGB LED with nanodlp card controller

Thank you for your answer.

The problem is that the marlin on the card is already compiled, so I can't access it.
So I can't know which PIN of the Nanodlp card allows to control the LEDs.
Do you know which PIN I can use or how I can recompile marlin on the card?
Ideally, I would like to have access to the marlin on the board before compiling.

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#4 2021-03-12 12:42:18

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,546

Re: RGB LED with nanodlp card controller

It is almost stock marlin except gpio 8.

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#5 2021-03-12 13:27:04

seraph
Member
Registered: 2021-03-10
Posts: 8

Re: RGB LED with nanodlp card controller

What's the difference with the gpio 8 ?
I'm stuck to configure a new Marlin because of the lack of information on the card.
For example if I want to reconfigure a marlin, can I use the same pin names as on a mks gen V1.4 or are there differences ?

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#6 2021-03-12 21:52:43

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,546

Re: RGB LED with nanodlp card controller

It is better to keep diffults intact, just take a look at marlin default configs same currently used for nanodlp. Only single pin is disabled on controller board (8th).
I guess pins are different from firmware to firmware.

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