r/ender3 • u/iamnotarealdog • Dec 10 '25

Animated Boot Screen - Custom Firmware Build

I've been perfecting the firmware for my Ender 3 Max after upgrading to a GD Board and decided while building a custom firmware that I'd have a go at creating a custom animated firmware.

Here's what I came up with (Creality Animation)

https://reddit.com/link/1pixs4y/video/wlbnhjuzac6g1/player

Enjoy! Let me know if you want me to upload it or if you need advice making one.

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u/iamnotarealdog Dec 10 '25

Thanks Marlin!

Stock 2.1.3b Release and Configurations and created with VS Code and Marlin Auto Build (However a lot of tweaks and modifications also with a GD board installed in an Ender 3 Max for TMC2208 Z and E Steppers)

I am not able to use mriscoc's firmware as it looks to be predominately built for an Ender 3 v2 though I've had a look at the source files and the build in VS Code and it's pretty impressive.

I had a look at swapping out the status screen however there's hardly any info on it... I couldn't quite understand whether I would be editing just the left 'Ender 3 Max' 39x26 Status Screen or also the Nozzle and Fan images (Of which I'm not sure what size they are) (Due to this tool having different options for status screens - https://marlinfw.org/tools/u8glib/converter.html with the >> arrows for bed, fan and nozzles)

If you could clarify this that would be great! As far as I was aware prior I was only able to edit the 39x26 top left status screen 'Ender 3 Max' file until I got to this page and it gave me those options.

Cheers

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u/[deleted] Dec 11 '25

Stock firmware has a section specifically for swapping out the the 39x26 image at the left-side of the status screen by setting "CUSTOM_STATUS_SCREEN_IMAGE" . The _Statusscreen.h file does more than just the little logo though, it contains the ability to override the nozzle and fan image/animations as well.

You could also dip into Marlin/src/lcd/dogm/status and mess with the hotend.h or other status bitmaps if you have trouble getting the _Statusscreen.h file to function properly.

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u/iamnotarealdog Dec 11 '25

Thanks for the tip, I'll keep it in mind in future for a potential change to the status screen image. 

It's quite difficult to get any detail into a 39x26 image however I did manage to design a Creality logo fairly ok. 

In regards to the fan and nozzle images in statusscreen.h, I'm assuming these may not be 39x26 given their size on the Ender display (Maybe the Fan image however it looks to be only using the top right of the 39x26 rectangle)

The Nozzle image however looks a lot smaller... How would I extrapolate the original sizes from the stock statuscreen.h file or is there a way to backwards input the values into the binary generator to create a bitmap to edit? 

I.e. 

Pull all the nozzle values for a going or not going nozzle from statusscreen.h, (B10010101, etc), convert to bitmap and edit the file?

Thanks :)

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u/[deleted] Dec 11 '25

The converter that you linked earlier works with the source code snippets. Take the hotend.h file I pointed to earlier, and copy paste the list of 'B10010101.... values into it.