PhidgetEncoder HighSpeed

The PhidgetEncoder Highspeed interfaces with any 5V quadrature encoder. A quadrature encoder is the most commonly used feedback device for a DC or stepper motor. With an encoder, you can keep track of how far your motor has turned, which then allows you to control the position and velocity in your code. This Phidget connects to your computer via USB.

Features

• Read at speeds of up to 500,000 quadrature cycles per second
• High compatibility - line driver, open collector, or push-pull with configurable resistor values
• Supports index channel, if present
• Reports a timestamp in milliseconds for each position change event, for easy velocity calculation
• Get encoder data at speeds of up to 125 Hz
• Mounting hardware included

Guides

Encoder Guide

Encoders measure the movement of mechanical parts. This guide discusses how

Product Specifications

Board Properties
Controlled By	USB (Mini-USB)
API Object Name	Encoder
Encoder Interface
Number of Encoder Inputs	1
Count Rate Max	1E+06 pulses/s
Encoder Interface Resolution	x4
Sampling Interval Min	0.008 s/sample
Sampling Interval Max	1 s/sample
Encoder Input Low Voltage Max	1.7 V DC
Encoder Input High Voltage Min	2.1 V DC
Pull-down Resistance (Line Driver)	2.2 kΩ or 10 kΩ
Pull-up Resistance (Open Collector)	2.2 kΩ or 10 kΩ
USB Speed	High Speed
Electrical Properties
Current Consumption Max	500 mA
Current Consumption Min	55 mA
USB Voltage Min	4.5 V DC
USB Voltage Max	5.3 V DC
Physical Properties
Operating Temperature Min	-40 °C
Operating Temperature Max	85 °C
Customs Information
Canadian HS Export Code	8471.80.00
American HTS Import Code	8471.80.40.00
Country of Origin	CN (China)

Documents

• Encoder Guide
• Mechanical Drawings
• Download 3D Step File

Product History

Date	Board Revision	Device Version	Packaging Revision	Comment
January 2005	0	300		Product Release
November 2009	1	302		Increased pull-up resistance from 1kO to 2.2kO
January 2010	2	302		Replaced USB connector with Mini-USB connector, made board slightly smaller.
January 2018	2	302	B	Removed cables from packaging.
June 2021	3	400	B	Added IOMode support. Updated obsolete components on board; no longer supports Phidget21
May 2023	3	401	B	USB bug fixes