Mapping issue (glitching fixed)

[masonbesmer]

https://imgur.com/a/mt6GlHH

--led-no-hardware-pulse fixed the flickering seen, but I am still having the issue of it only using half the panel. I am using sudo examples-api-use/demo -D4 --led-rows=64 --led-cols=64 --led-slowdown-gpio=4 --led-show-refresh --led-chain=3 --led-parallel=3 --led-no-hardware-pulse . There are 2 in daisychain, 3 chain in parallel to an Electrodragon, and they are 64x64 panels. Thank you for any help, not really sure where to go from here.

[hzeller]

You definitely want the hardware pulse, because it reduces flickering. I can't think of a situation in which no-hardware-pulse would be better. Could you elaborate how it manifests with the different settings ?

For the 64x64 panel, make sure to connect also the E line, which may be on either pin 4 or 8 on your panel. It would explain why half of the panel is not lit.

Out of curiosity: if this is a cube, you'd have 6 panels. But with led chain of 3 and led parallel of 3 you are addressing 9 panels. Is that intentional or just a glitch in the command line above ?

[masonbesmer]

Hi there thank you for the ,

[hzeller]

it is hard to tell what the flickering is from the image, but also make sure to disable 1-wire communication if that is enabled (see troubleshooting section)

[masonbesmer]

Sorry about that, the virtual keyboard on my laptop entered the next plane of existence and closed the issue. I am following this guide and wired it like him, the demo code is on the pdf, and I am not sure what the E line is, it is a panel with 4power in pins and 16 data pins one in one out, he explains why they are 3x3 in the pdf, and I am not near the project right now. I will try to disable one wire later this evening, thank you for the help . The hardware pulse fixed all the flickering but maybe it is coincidence, i will try to tweak with it later.

[hzeller]

In doubt follow the guide in this library not of what is found somewhere else. The wiring guide lists what the E-line to connect. Depending on your panel, that is either on Pin 4 or pin 8 on the panel connector.

What is the guide you are referring to ?

[masonbesmer]

Oh dear, I must be losing my marbles over here, the link to the guide is https://drive.google.com/file/d/1w1jja1O2fJ9RGRqpyONtwTtHGkaTaXRy/view?usp=sharing , once again thank you for the help!

[hzeller]

If you use the electrodragon board, make sure to enable the E line there. I think the jumpers are similar to the adapter in this project

[masonbesmer]

I’ll look in to it later, thank you! Will let you know how it goes

Sent from my iPhone

On Sep 18, 2021, at 15:47, Henner Zeller @.***> wrote:

 If you use the electrodragon board, make sure to enable the E line there. I think the jumpers are similar to the adapter in this project

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[masonbesmer]

Banding and flickering fixed without the pulse turned off, and I jumped 2 pins on the dragon to enable E line. Now the banding is gone, but the mapping is all off, how do I fix this?

[hzeller]

what do you mean with 'mapping is off' ?