PortaPack Mayhem — Custom Splash Screens

A collection of custom splash screens for the HackRF One + PortaPack running Mayhem firmware.

Preview

Screen	Preview
splash_name.bmp

---

What Is a Splash Screen?

The PortaPack displays a splash screen image on boot before loading the Mayhem UI. It is a 240×320 pixel BMP file stored on the SD card. Swapping it out is one of the easiest ways to personalise your device.

---

Requirements

• HackRF One
• PortaPack H1 or H2
• Mayhem firmware installed
• MicroSD card (FAT32 formatted)
• A way to write to the SD card (card reader / OTG adapter)

---

Installation

1. Download

Clone the repo or download the .bmp file you want:

git clone https://github.com/YOUR-USERNAME/YOUR-REPO-NAME.git

Or download a single file directly from the Releases tab.

2. Copy to SD Card

Place the splash screen BMP on the root of your PortaPack's SD card and rename it:

/splash.bmp

Your SD card root should look like this:

SD Card (root)
├── splash.bmp        ← your custom splash screen
├── FIRMWARE/
├── APPS/
└── ...

3. Boot

Eject the SD card, insert it into the PortaPack, and power on. Your custom splash screen will display on startup.

---

Image Specifications

All splash screens in this repo conform to the PortaPack Mayhem standard:

Property	Value
Format	BMP (Windows Bitmap)
Width	240 px
Height	320 px
Color Depth	24-bit RGB
File name	splash.bmp

Note: The PortaPack screen is 240×320 portrait orientation. Images that don't match this exact resolution may display incorrectly or fail to load.

---

Creating Your Own

Using GIMP

1. Open or create your image
2. Image → Scale Image → set to 240 × 320 px
3. File → Export As → name it splash.bmp
4. In the BMP export dialog select 24 bit color, no RLE compression
5. Copy to SD card root

Using ImageMagick (CLI)

# Convert any image to the correct format
convert input.png -resize 240x320! -type TrueColor splash.bmp

Using Python (Pillow)

from PIL import Image

img = Image.open("input.png").resize((240, 320))
img.convert("RGB").save("splash.bmp")

---

Reverting to Default

Delete splash.bmp from the SD card root. Mayhem will fall back to the built-in default splash on next boot.

---

Compatibility

Firmware	Compatible
Mayhem v1.x	Yes
Mayhem v2.x	Yes
Mayhem nightly	Yes
Stock HackRF firmware	No (PortaPack only)

Tested on PortaPack H2 with Mayhem firmware. Should work on H1 as well — open an issue if you encounter problems.

---

Contributing

Contributions welcome. If you have a splash screen to share:

1. Fork the repo
2. Add your .bmp file (240×320, 24-bit)
3. Add a preview image to /previews/
4. Update the preview table in this README
5. Open a pull request

Please keep submissions clean — no offensive imagery.

---

License

All splash screens in this repository are released under Creative Commons CC0 1.0 unless otherwise noted in the file's folder.

Do whatever you want with them.

---

Related Projects

• Mayhem Firmware — the PortaPack firmware these are made for
• HackRF One — the SDR hardware
• PortaPack — the companion hardware

---

Made for the HackRF / PortaPack community.