1421 SparkFun PRT-12080 SparkFun NewCondition
VKey Voltage Keypad

VKey Voltage Keypad

12.77

Product Code : 1421

In Stock Now : 2
Incl. BTW: € 14,30 Excl. BTW: € 11,92

This is the VKey Voltage Keypad, a simple board that adds a keypad to your microcontroller project without using multiple I/O pins. This keypad has 12 pushbutton switches in a 3x4 array. The VKey operates by outputting an analogue voltage to encode which key has been pressed, which can be read by an analogue to digital converter on a microcontroller on a single input pin.

Traditional digital keypad interfacing techniques can require a large number of digital I/O lines. On a small controller, there may not be many I/O pins left for other tasks. The VKey operates at a voltage of 3.3-5.5V and features a dual opamp which is used as a current source and buffer amplifier.

Note: This is a partial kit that requires the push buttons to be soldered onto the board.

U bent wellicht ook geïnteresseerd in de volgende producten

Momentary Push Button Switch - 12mm Square

Momentary Push Button Switch - 12mm Square

Incl. BTW: € 0,52 Excl. BTW: € 0,43 Vanaf: € 0,41
Big Dome Push Button - Red

Big Dome Push Button - Red

Incl. BTW: € 8,95 Excl. BTW: € 7,46 Vanaf: € 8,05
Right Angle Tactile Button

Right Angle Tactile Button

Incl. BTW: € 0,48 Excl. BTW: € 0,40
Toggle Switch and Cover - Illuminated (Red)

Toggle Switch and Cover - Illuminated (Red)

Incl. BTW: € 3,17 Excl. BTW: € 2,64

Schrijf uw eigen review

Alleen geregistreerde gebruikers kunnen een review plaatsen. U kunt, inloggen of registreren