Waterfall Designer is a utility for creating and editing custom waterfall colour palettes. A live waterfall display is shown while editing so you can see the effect of your changes in real time. Profiles are saved as files in the WATERFALLS/ directory on the SD card and can be applied to replace the active waterfall colour scheme.

Note: Changes made while editing are previewed live but are automatically reverted when you leave the app — unless you explicitly press Apply. Only after pressing Apply is the palette permanently set as the active colour scheme.

Workflow

1. Press New to start a fresh profile, or Open to load an existing one from WATERFALLS/.
2. Select a signal level entry from the list (0–255, representing signal strength).
3. Press Edit color to open the colour picker and assign an RGB colour to that level.
4. Use Add level / Remove level to insert or delete colour stops in the palette.
5. Press Save to write the current profile back to its file in WATERFALLS/.
6. Press Apply to set this profile as the active waterfall colour scheme and exit.

Controls

• New: Creates a new empty profile.
• Open: Opens the file manager to load a profile from WATERFALLS/.
• Save: Saves the current profile to disk. The filename is shown after saving.
• Add level (+): Adds a new colour stop to the palette.
• Remove level (−): Removes the currently selected colour stop.
• Edit color: Opens the colour picker sub-view for the selected level.
• Apply: Applies the current profile as the active waterfall palette and exits the app.

Colour Picker

When editing a colour stop the following fields are available:

• Index: The signal level this colour applies to (0–255). 0 = weakest signal (background), 255 = strongest.
• R / G / B: Red, Green, Blue components, each 0–255.
• Step: Increment size for encoder knob adjustments on the R/G/B fields.
• Save: Confirms the colour and returns to the main view.

RF Settings

The live waterfall display is fully functional while editing — you can tune to a real signal to judge how your palette looks on actual data.

• Frequency and frequency step: Standard RX frequency controls.
• RF Amp, LNA, VGA: Standard gain controls.

Files

Profile files are stored in WATERFALLS/ on the SD card. Settings are saved to rx_wtf_designer.ini.