zeRGBa

RGB

RGB color picker modeled after the classic Blynk-style control surface.

At a glance

Default8 x 5

Minimum5 x 3

Resizehorizontal

Pinrequired

Interactiveyes

Behavior

The app supports multiple color picker styles on top of the same payload.
Ideal for LED strips, ambient lighting and status palettes.
Typically paired with button presets or scenes.

Firmware contract

Read param[0], param[1], param[2] for red, green and blue channels.

On the app side this widget snaps to the 8-column square grid and uses horizontal resizing. Its raw type is RGB and the matching icon token in the app is paintpalette.fill.

Pin support: A configured pin is required before the widget becomes meaningful.

Transmission: Payload format depends on the widget type and the selected pinType.

Canvas preview

docs.widget.preview

51,204,204

zeRGBa

Widget contract

Property	Value
Raw type	RGB
Default size	8 x 5
Minimum size	5 x 3
Resize mode	horizontal
Pin requirement	required
Pin support	See behavior and firmware contract above
Interactive	yes
Transmission	Depends on the widget payload type

Allowed pin families

Bound to the configured pinType and limited by how the current app/connector serialize the widget payload.

Transport path

Payload leaves the canvas through the dashboard transport and lands on the selected virtual, digital or analog endpoint.

Operational limits

Server-side behavior may still depend on board library support and project policy.

Configuration surface

Color, label and position are stored in the dashboard profile.
Use the app-side widget config sheet to tune behavior per widget type.

Limits and caveats

Server-side behavior may still depend on board library support and project policy.

Firmware example

A minimal pattern that matches how this widget usually talks to the board.

ze-rgba.ino

123456BLYNK_WRITE(V3) {  int r = param[0].asInt();  int g = param[1].asInt();  int b = param[2].asInt();  setStripColor(r, g, b);}

Layout notes

Canvas footprint

8 x 5

Default footprint in the Plynx canvas before user resizing.

Resize floor

5 x 3

The minimum size accepted by the app during drag-resize.

Interaction model

Live input

Whether the user edits state directly or only reads it.

Related widgets

Button

Momentary or toggle actuator for a single virtual or hardware pin.

Styled Button

A richer button with distinct on/off labels and color states.

Slider

Horizontal continuous input with min, max and send strategy options.

Vertical Slider

Vertical range control for compact side panels and console-style layouts.