Encoders

Wheel encoders and disks for robot drive systems

An encoder is used to measure rotational speed of motors or wheels.

For light based encoders a series of markings or holes are made around the rotating disk that are used to break a light beam or change reflectivity that is detected using an infrared sensor.

Magnetic based encoders use a disk with alternating magnetic orientation as markings around it that are read by a Hall effect sensors.

 As the wheel rotates these markings or magnetic changes can be counted and computed against time to determine the rotational speed.

Encoders can be supplied fixed to motors or as separate items for adding to anything that rotates.

100:1 Metal Gearmotor 37Dx52L mm with 64 CPR Encoder

Code: MEC-30074

This 2.62" × 1.45" × 1.45" gearmotor is a powerful 12V motor with a 100:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 6400 counts per revolution of the gearbox’s output shaft. These units have a...

$50.95

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131:1 Metal Gearmotor 37Dx52L mm with 64 CPR Encoder

Code: MEC-30147

This 2.62" × 1.45" × 1.45" gearmotor is a powerful 12V motor with a 131.25:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 8400 counts per revolution of the gearbox’s output shaft. These units hav...

$50.95

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19:1 Metal Gearmotor 37Dx52L mm with 64 CPR Encoder

Code: MEC-30070

This 2.54" × 1.45" × 1.45" gearmotor is a powerful 12V motor with a 19:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 1216 counts per revolution of the gearbox’s output shaft. These units have a ...

$50.95

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29:1 Metal Gearmotor 37Dx52L mm with 64 CPR Encoder

Code: MEC-30174

This 2.54" × 1.45" × 1.45" gearmotor is a powerful 12V motor with a 29:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 1856 counts per revolution of the gearbox’s output shaft. These units have a ...

$50.95

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34:1 Metal Gearmotor 25Dx52L mm (Low Power) with 48 CPR encoder

Code: MEC-30151

This gearmotor uses a motor with extra-strong magnets and a 34:1 metal gearbox to deliver a lot of power in a relatively small package. It has an integrated 48 CPR quadrature encoder, which provides 1633 counts per revolution of the gearbox’s output shaft. These units have a 4 mm-diameter D-shape...

$43.95

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50:1 Metal Gearmotor 37Dx52L mm with 64 CPR Encoder

Code: MEC-30071

This 2.62" × 1.45" × 1.45" gearmotor is a powerful 12V motor with a 50:1 metal gearbox and an integrated quadrature encoder that provides a resolution of 64 counts per revolution of the motor shaft, which corresponds to 3200 counts per revolution of the gearbox’s output shaft. These units have a ...

$50.95

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75:1 Metal Gearmotor 25Dx54L mm (Low Power) with 48 CPR encoder

Code: MEC-30152

This gearmotor uses a motor with extra-strong magnets and a 75:1 metal gearbox to deliver a lot of power in a relatively small package. It has an integrated 48 CPR quadrature encoder, which provides 3592 counts per revolution of the gearbox’s output shaft. These units have a 4 mm-diameter D-shape...

$43.95

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Dagu Simple Encoder Kit - Two Encoders

Code: SEN-10056

The simple encoder kit from DAGU consists of two neodymium 8-pole magnets with rubber hubs and two hall-effect sensors terminated with 150mm (6inch) cable and 3 pin female servo headers.

$15.95

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Magnetic Encoder Pair Kit for Micro Metal Gearmotors, 12 CPR, 2.7-18V (HPCB compatible)

Code: SKU-003509

Add quadrature encoders to your micro metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft.

$10.95

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Pololu 42 x 19mm Wheel and Encoder Set

Code: MEC-30009

This set contains includes two 42 x 19 mm wheels, two matching extended brackets and two encoders. With the addition of two micro metal gear motors it forms a complete differential drive system for small robot with encoder feedback. Buy as a set and save!

$51.95

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Backorders: Not Available