[SOLVED] Splash screen too small on PortaRF Mayhem v2.3.1 correct resolution is 320×460 not 240×300

[fxnn404]

Describe the bug.

When setting a custom splash screen via PortaRF Utilities → File Manager and selecting a .bmp file, the splash image is displayed significantly smaller than expected after applying it.

The image is also shown too small in the preview before pressing apply.

Device: PortaRF Mayhem v2.3.1 (from PortaRF GitHub)

The BMP file was downloaded from:
https://ppsplash.creativo.hu/

File specifications:

• Resolution: 240 × 300 px
• Color depth: 24-bit BMP

I also manually converted the image to 240 × 304 (24-bit), but the issue persists.

It might be related to the PortaRF having a bigger screen compared to the normal HackRFs.

Reproduction

1. Open PortaRF Utilities
2. Go to File Manager
3. Select a 240×300, 24-bit .bmp splash file
4. Apply the splash

Result:
The splash screen appears too small and does not fill the display.

Expected behavior

The splash image should:

• Be displayed at full size
• Fill the entire screen except the top bar (240 × 300)

Environment/versions

No response

Anything else?

No response

[gozillah]

320 x 460 pixels @ 24 bit BMP seems to just fill the splash screen:

[fxnn404]

Thanks you for finding out the exact size. But do you mean 320 x 640 pixels or 320 x 460 pixels like shown in the Splash?

[gozillah]

Sorry for the typo in my comment's initial text (I corrected it). It is 320 x 460. On top of the splash is the 320 x 20 Mayhem header that brings the total to 320 x 480 which is one implementation of the 2 x 3 proportion.

Try my 320 x 460 AI-generated "Radio Waves" Splash.bmp

[fxnn404]

Thank you for the clarification! Your Splash looks amazing, I will try it. What AI did you use to create this .bmp with the right format?

[gozillah]

I used ChatGPT with the following prompt: Create an artistic, colourful graphic in 320 x 460 aspect ratio (portrait format) on the topic of "Radio Waves".

The resulting .png picture had an aspect ratio of 1024 x 1536, so like 320 x 480 and not 320 x 460 as I had requested. I squeezed it in the vertical dimension (480 -> 460), resized and reformatted it to .bmp with Microsoft Paint. Maybe I could have asked ChatGPT straight for a .bmp picture.

[fxnn404]

Yeah, no. ChatGPT can't create specific dimensions or formats I think (at least not this specific one). I just used an online converter and it worked fine (I don't have Paint or other software that does the job). Again thank you very much, now I got a Splash selected and it works perfectly!