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1047_2B Phidget Encoder High Speed 4-Input

£91.80 £76.50

Read up to four encoders simultaneously with this Phidget. Includes 4 digital inputs for reading limit switches.


Due to parts and components going obsolete and becoming unavailable, the 1047_2B has moved to a new processor that is not supported under Phidget21. If you're using our old libraries you must upgrade to Phidget22 before you can make use of this Phidget.

The PhidgetEncoder Highspeed 4-Input 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.


  • Four digital inputs for reading limit switches or buttons
  • Works with all 0-5V quadrature encoders - simultaneously read four incremental encoders with line driver, open collector, or push-pull output circuits
  • Read at speeds of up to 250,000 quadrature cycles per second
  • Power Saving Options - You can turn it off via software when it's not turning. While disabled, this board draws 30mA of current.
  • Reports a timestamp in milliseconds for each position change event, for easy velocity calculation.

Comes Packaged with



  • Hardware mounting kit
  • 4x M3 Bolts (2cm Length)
  • 4x Plastic spacers (5mm Length)
  • 4x M3 Nuts


Product Specifications

Encoder Interface

API Object Name


Number of Encoder Inputs


Count Rate Max

1E+06 pulses/s

Encoder Interface Resolution


Sampling Interval Min

0.008 s/sample

Sampling Interval Max

60 s/sample

Encoder Input Low Voltage Max

1.1 V DC

Encoder Input High Voltage Min

2 V DC

USB Speed

Full Speed


Controlled By

USB (Mini-USB)

API Object Name


Electrical Properties

Encoder Pull-up Resistance

10 kΩ

Current Consumption Max

500 mA

Current Consumption Max (per encoder)

200 mA

Current Consumption Min

10 mA

USB Voltage Min

4.5 V DC

USB Voltage Max

5.3 V DC

Physical Properties

Recommended Wire Size

16 - 26 AWG

Operating Temperature Min

-40 °C

Operating Temperature Max

85 °C

Digital Inputs

Number of Digital Inputs


Pull-up Resistance

15 kΩ

Low Voltage Max (True)

1 V DC

High Voltage Min (False)

1.8 V DC

Low Voltage Trigger Length Min

4 ms

High Voltage Trigger Length Min

16 ms

Digital Input Voltage Max

5.3 V DC