Reversing every second line in LED matrix about fastled HOT 8 CLOSED

Hi, and you're among good company. About half of the LED matricies are in plain "row order" and the other half are in "row prime order" aka "serpentine" aka "boustrophedon" order, meaning that they go across one row and then BACKWARDS across the next row.

We'll be adding basic XY matrix support in an upcoming release, and you'll be able to configure whether you have a plain "row order" or whether you have a serpentine layout.

So: yes, we've seen it before and you're not alone, and we're hoping to provide both options for our users when we ship XY matrix support. (No date is set on that yet.)

I'm going to close this "Issue" but I've opened the more general Issue #35 for tracking the XY feature.

from fastled.

Search the g+ community - I posted a basic xy matrix class to there at some point. (Traveling internationally right now, or id dig it up myself)

--Dg (on mobile phone, pardon terseness and typos)

On Feb 24, 2014, at 12:34 PM, kriegsman [email protected] wrote:

Hi, and you're among good company. About half of the LED matricies are in plain "row order" and the other half are in "row prime order" aka "serpentine" aka "boustrophedon" order, meaning that they go across one row and then BACKWARDS across the next row.

We'll be adding basic XY matrix support in an upcoming release, and you'll be able to configure whether you have a plain "row order" or whether you have a serpentine layout.

So: yes, we've seen it before and you're not alone, and we're hoping to provide both options for our users when we ship XY matrix support. (No date is set on that yet.)

I'm going to close this "Issue" but I've opened the more general Issue #35 for tracking the XY feature.

—
Reply to this email directly or view it on GitHub.

from fastled.

Thanks for the feedback and the pointer - I'll make sure to check the g+ page (and upload the video of the anti-aliased scroller that Kriegsman asked for there ;)

from fastled.

@focalintent I wasn't able to find your video, this might be a dead thread and if it's not too much could you dig up that link as it would answer my question I believe, thanks

from fastled.

Not sure what video you're referring to - or for that matter the question you'd like answered :)

from fastled.

I'm sorry for the misunderstanding but hopefully you are still able to help me out as i would greatly appreciate it. I was trying to find help on my column matrix serpentine raster matrix I built (very noob 2nd project) 8x17 neopixel and found a comment of yours from 2 years ago quoted "I posted a basic xy matrix class to there at some point." and I thought you had meant you had posted a tutorial/class instead of the actual "class" function as I think you meant on the g+ community. I am trying to treat my matrix as a two dimensional display and I don't fully grasp how to use a 2d array quite yet as I am trying to get something to scroll and was just told that " to transfer the matrix defining the display you want with a one column offset into the LED buffer. This shifts the whole pattern over to the right or left depending on the sign of the offset. " because as of now I am just creating text by the "setpixelcolor" function with each led individually.

From: Daniel Garcia [email protected]
Sent: Monday, August 15, 2016 12:56:12 AM
To: FastLED/FastLED
Cc: IIroobixII; Comment
Subject: Re: [FastLED/FastLED] Reversing every second line in LED matrix (#34)

Not sure what video you're referring to - or for that matter the question you'd like answered :)

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from fastled.

It sounds like you're using the neopixel library - which I generally don't use - if you want specifics on how to scroll a 2D matrix I'd say ask on the g+ group for FastLED if you're using FastLED (http://fastled.io/+) or on adafruit's forums if you're using the neopixel library.

from fastled.

This is possible using the kMatrixSerpentineLayout variable in the XYMatrix demo: https://github.com/FastLED/FastLED/blob/master/examples/XYMatrix/XYMatrix.ino

Another option is this library used with FastLED: https://github.com/AaronLiddiment/LEDMatrix

from fastled.