Digilent 410-117P Bedienungsanleitung PDF herunterladen

™

Revision: October 31, 2011

Note: This document applies to REV A of the board.

1300 NE Henley Court, Suite 3

Pullman, WA 99163

(509) 334 6306 Voice | (509) 334 6300 Fax

Doc: 502-117 page 1 of 2

Overview

The PmodENC Rotary Encoder Module

features a rotary shaft encoder with integral

push-button that provides rotate-right, rotate-

left, and button-press outputs. The module also

includes a sliding switch that provides an on/off

output.

Features include:

• a rotary push-button shaft encoder

• a slide switch with a series resistor

• a 6-pin header

• small form factor (1.5” x 0.75”).

Functional Description

There are four outputs on the PmodENC

module, labeled A, B, BTN, and SWT. Outputs

A and B are the encoded outputs from the

rotary shaft encoder. In principle, the rotary

shaft encoder behaves like a cam connected to

a central shaft. Rotating the shaft operates two

push-button switches, as shown in Figure 2.

Depending on which way the shaft is rotated,

one of the switches closes before the other.

Likewise, as the rotation continues, one switch

opens before the other. When the shaft is

stationary (the detent position) both switches

are open (logic 1).

5 = GND

1 = A

2 = B

3 = BTN

4 = SWT

6 = VCC

Figure 1 PmodENC Pin Signals

Figure 2 Rotary Shaft Encoder Circuitry

1 2

Inhaltsverzeichnis

Seite 1 - Functional Description

PPmmooddEENNCC™™ RReeffeerreennccee MMaannuuaall Revision: October 31, 2011 Note: This document applies to REV A of the board. 1300 NE Henley Court

Seite 2 - PmodXYZ Reference Manual

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