VKey Voltage Keypad Hookup Guide

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Contributors: Byron J.
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The VKey comes with the surface mount components assembled, but the PTH tactile switches are loose, and need to be soldered to the board.

Contents of the VKey package

Contents of the VKey package

The first step in hooking up the VKey is to solder in the key switches.

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Attaching the tact switches

Depending on how the board is to be mounted, different headers can be soldered to the board.

If the overall depth of the assembly is a concern, you can use a right angle header on the same side of the board as the tact switches.

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Right angle header on top of board

If clearance past the edge of the board is a concern, you can use a straight header soldered to the side opposite the switches.

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Straight header on back of board

And of course, you could always solder wires directly to the board in place of the header.

Connecting The VKey To An Arduino

VKey Conencted to Arduino

Basic hookup to an Arduino

It takes three wires to connect the VKey to an Arduino.

(VKey → Arduino)

  • V+ → 5V
  • Vout → A1 (or any other analog pin)
  • GND → GND