Number Input Widget

⚡ Control

The Number Input widget provides a text field pre-validated for numeric input. Users type a value directly and press Send (or Enter). Useful when Slider precision isn't enough or when the range is very large (e.g. frequency in Hz, timestamps, large counts).

Default size: 2 × 2 grid cells

---

Configuration

Property	Type	Default	Description
min	number	0	Input minimum (rejects values below)
max	number	1000	Input maximum (rejects values above)
step	number	1	Increment used by ▲/▼ spin buttons
placeholder	string	Enter value	Hint text when empty
unit	string	``	Unit suffix shown inside the field
Device	device	—	The device to write to
Pin	V0–V255	—	The virtual pin to write
Label	string	—	Widget label

---

Firmware example

VWIRE_RECEIVE(V0) {
  long freq = param.asLong();       // e.g. 433920000
  setRadioFrequency(freq);
  Vwire.virtualSend(V0, freq);     // echo confirmed value
}

---

Difference from Slider

Feature	Slider	Number Input
Input method	Drag	Type / spin
Best for	Range ≤ 1000	Large or non-linear ranges
Precision	Step-limited	Full numeric precision
Screen footprint	3×1 (wide)	2×2 (compact)

---

Validation

Values outside [min, max] are highlighted in red and not sent until corrected.
Non-numeric input is silently rejected.