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Small 5 V stepper motor with integrated 1/16 reduction gearbox and mounting plate

Adafruit

Adafruit ADA-858 Small Reduction Stepper Motor 5VDC 48-Step 1/16 Gearing

SKU CH-T66F-P4FAA

A unipolar stepper motor with a 1/16 reduction gearset delivering 513 steps per revolution at 5 VDC

  • TypeOther
  • Compact 1/16 gearing delivers 513 steps per revolution
  • 48-step resolution enables precise positioning at 11.25° increments
  • 5 VDC operation suits low-voltage microcontroller projects
  • Flattened shaft accepts set-screw attachments for secure coupling
  • Built-in mounting plate with two holes simplifies mechanical integration

First Stepper Motor

This small reduction stepper motor is designed for beginners and hobbyists building low-speed motion projects. It operates at 5 VDC and includes a built-in mounting plate with two holes for easy installation. The flattened shaft allows secure attachment with a set-screw. It pairs directly with the Adafruit Motor Shield for Arduino.

Sustained Load Behaviour

The integral 1/16 reduction gearing multiplies the base 32 steps to 513 steps per revolution, delivering higher torque at lower speeds. Continuous operation at 5 V should stay under 25 RPM to avoid missed steps. Over-driving to 9 VDC can reach about 50 RPM but increases heat and wear. Micro-stepping or interleaved modes are not practical because the gear train makes rotation excessively slow.

Gearing Constraints

The 1/16.032 gear ratio means each output revolution requires 513 steps, limiting maximum practical speed. The gear train introduces mechanical resistance so the shaft cannot be turned as smoothly by hand as an un-geared motor. Single or double stepping modes are recommended; finer stepping modes would take too long per revolution. The motor is uni-polar with a centre-tap wiring arrangement.

Highlights

  • Compact 1/16 gearing delivers 513 steps per revolution
  • 48-step resolution enables precise positioning at 11.25° increments
  • 5 VDC operation suits low-voltage microcontroller projects
  • Flattened shaft accepts set-screw attachments for secure coupling
  • Built-in mounting plate with two holes simplifies mechanical integration

Specifications

BrandAdafruit Industries
ModelADAID-858
Part NumberADA-858
TypeOther

Questions about this item

How much heat or noise does the 5 V stepper produce when run continuously at 25 RPM?

At 5 V the motor stays under 25 RPM and draws modest current, so it runs cool and quiet enough for desktop use.

Which driver or shield must I already have to control this uni-polar motor?

It connects directly to an Adafruit Motor Shield for Arduino using the red, orange, pink, blue and yellow leads.

Will the 1/16 reduction gear set mesh with my existing 5 mm shaft couplers?

The output shaft is flattened, so a set-screw coupler for D-shafts fits without modification.

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