LED barre: how to make a growing left to right LED while print completes?
 
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LED barre: how to make a growing left to right LED while print completes?  

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Scott
(@scott-18)
Estimable Member
LED barre: how to make a growing left to right LED while print completes?

Hi!

As said on title, does anyone know how to make the LED growing from left to right accordingly to the completion of the print?
That should be very nice to quickly see how the print is going!

Thanks a lot!

Posted : 11/04/2025 11:44 am
Staldy
(@staldy)
Trusted Member
RE: LED barre: how to make a growing left to right LED while print completes?

Or how about a red light sweeping left to right like KITT (Knight Rider) or a Cylon eye (Battlestar Galactica), depending on which classic show you grew up with, haha!

Posted : 11/04/2025 12:19 pm
Scott
(@scott-18)
Estimable Member
Topic starter answered:
RE: LED barre: how to make a growing left to right LED while print completes?

Haha, if there is a way to modify the sequence I guess we could make anything we want, but we have to know hoow to change it first!

Posted : 11/04/2025 5:09 pm
Staldy liked
Flora
(@flora)
Active Member
RE: LED barre: how to make a growing left to right LED while print completes?

None of this will be possible with the original LED strip. It is a regular analog RGB strip, where all the diodes are controlled by the same signal (PWM).

 

Posted : 15/04/2025 12:25 pm
Jürgen
(@jurgen-7)
Honorable Member
RE: LED barre: how to make a growing left to right LED while print completes?
Posted by: @flora

None of this will be possible with the original LED strip. It is a regular analog RGB strip, where all the diodes are controlled by the same signal (PWM).

I don't think that is correct. It's a strip of WS2812 LEDs, which are individually addressable via a daisy-chained serial data link.

But to my knowledge there are no provisions in the firmware for controlling them individually. Prusa's take is that you already get a "vertical progress bar" as the print bed moves down over time.

Posted : 15/04/2025 1:01 pm
Jürgen
(@jurgen-7)
Honorable Member
RE: LED barre: how to make a growing left to right LED while print completes?
Posted by: @jurgen-7

It's a strip of WS2812 LEDs, which are individually addressable via a daisy-chained serial data link.

Sorry, I was wrong there. Was really sure I had seen them labeled as WS2812 in the schematic, but they are not. There are separate PWM lines for R/G/B/W intensity, which will go to all LEDs in parallel.

Posted : 15/04/2025 2:28 pm
ssmith liked
Flora
(@flora)
Active Member
RE:

50 individually controlled points.

As soon as I get the proper connectors and make the control from GCODE, I will post a more detailed description.

This post was modified 1 day ago by Flora
Posted : 06/05/2025 7:13 pm
Staldy and Biomech liked
Jürgen
(@jurgen-7)
Honorable Member
RE: LED barre: how to make a growing left to right LED while print completes?
Posted by: @flora

50 individually controlled points.

And the best thing: As long as you keep the LEDs flashing that, VFAs no longer matter at all! 👍 😉 

Posted : 06/05/2025 7:32 pm
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