Button widget

What it does

Momentary or toggle actuator that writes a single scalar to a virtual pin. The canvas renders live state; the board reacts through a BLYNK_WRITE handler.

Pins

Semantics: Single virtual pin (V1..V127)
Writes to one virtual pin, V1..V127.
Default size: 2 x 1

Config fields

Field	Type	Default	Effect
`label`	text	—	Caption shown on the button face.
`mode`	select (switch / push)	switch	Toggle vs hold-to-press semantics.
`onValue`	text	1	Payload sent on press / turn-on.
`offValue`	text	0	Payload sent on release / turn-off.
`onLabel`	text	ON	Optional caption when latched on.
`offLabel`	text	OFF	Optional caption when latched off.
`color`	color	—	Accent for the active surface.
`offColor`	color	—	Accent for the off state.
`showPin`	boolean	true	Renders the V-pin badge on the tile.

Typical use

firmware.ino

BLYNK_WRITE(V1) {  int v = param.asInt();  digitalWrite(RELAY_PIN, v);}

iOS app

Yes — iOS Plynx renders buttons with identical switch/push semantics (Plynx/Views/Project/Dashboard/Widgets/ButtonView.swift).