Keypad

The Keypad class constructs an object that represents a single Keypad attached to the board.

Supported Keypads:

• VKEY
• Waveshare AD (Analog)
• MPR121
• MPR121QR2
• Grove QTouch (AT42QT1070)

Parameters

• General Options

  Property	Type	Value/Description	Default	Required
  controller	string	AT42QT1070, MPR121, MPR121QR2, QTOUCH, VKEY, ANALOG. The Name of the controller to use	ANALOG	Yes
  keys	array	Mapping of key values	By Device	No

• VKEY Options (controller: "VKEY")

  Property	Type	Value/Description	Default	Required
  pin	number, string	Analog pin		Yes

• ANALOG Options (controller: "ANALOG")

  Property	Type	Value/Description	Default	Required
  pin	number, string	Analog pin		Yes
  length	number	Number of keys (required only if keys is not specified)		Yes

Shape

Property Name	Description	Read Only
which	Value of key pressed from keys array	No
timestamp	Timestamp at time of key press	No

Component Initialization

API

Events

• hold The key has been held for holdtime milliseconds

• down, press The key has been pressed.

• up, release The key has been released.