Has anyone found gears that fit the shaft? The ones shown in "frequntly bought together" are for smaller round shafts.

for anyone looking for this, 5mm shaft, its "flat" part fits a rectangle 3mmx5mm.

Could i use the driver to control a slightly bigger pm55l-048? i would probably need to push 19v through the uln2003.

Yes, you can use the driver to control pm55l-048, the maxmum voltage of ULN2003 can reach 24V.

what is it supposed to do?

It, or they, do nothing - - until you connect a smart source of drive signals. The included "driver boards" are electrical signal drivers to boost the strength of those signals. You might connect these boards between the motors and an Arduino or a Raspberry Pi or some manual speed control circuits for the stepper motors. The signals have to be the rippling sequence of logic pulses needed by the stepper motors. Because these motors have 64:1 gears, you program 64 sequences to get the shaft to go one full turn. Naturally, the gears trade off speed (RPM) for strength (torque) of turning. They also gain precision of output shaft position, which can be moved in STEPS, or fractions, of 1 sixty-fourth of a turn. If your only interest is in speed control, not positioning, you may want to look into DC motors (or gearmotors) and 'H-bridge drivers' and PWM (Pulse Width Modulation) controls.

Do you have instructions on how to set it up/test it with arduino? (newbe)

Google: "arduino 28BYJ-48 sample code" You will get plenty of examples to get you started. Good luck.

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ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor with ULN2003 Driver Board

ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor with ULN2003 Driver Board

Product ID: 81603210

Details

Brand
ELEGOO
Material
Metal Plastic
Model Name
EL-SM-003
Speed
9.38 rpm
Voltage
5 volts

💡4 onboard LEDs for coil status

🔋5V unipolar stepper motors

⚙️5 matched motor-driver sets

₩40062

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Description

⚙️ Elevate your maker game with precision motion—because your projects deserve smooth moves!

OPTIMIZED FOR STABILITY - Designed for regulated 5V supply and synchronized grounds to minimize vibration and ensure whisper-quiet operation.
BUILD 5 PROJECTS AT ONCE - Five complete motor-driver sets let you prototype multiple ideas or keep spares ready for seamless innovation.
PLUG AND PLAY DRIVER BOARDS - ULN2003 boards simplify wiring with clear IN1-IN4 inputs and LED indicators for real-time coil activation feedback.
PRECISION LOW SPEED CONTROL - 1:64 geared stepper motors deliver smooth, accurate rotation at 9.38 RPM—perfect for clocks, gauges, and robotics.
ARDUINO COMPATIBLE READY TO GO - Standard interface and included jumper wires make integration into your automation or motion-control projects effortless.

The ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor kit includes five matched unipolar geared stepper motors and ULN2003 driver boards, optimized for low-speed, precise motion control at 9.38 RPM. Ideal for robotics, automation, and educational projects, each set features easy-to-use driver boards with LED coil indicators and comes with jumper wires for quick Arduino-compatible integration.

Specifications

ASIN	B01CP18J4A
Best Sellers Rank	#12,948 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in 3D Printer Interface & Driver Modules
Brand Name	ELEGOO
Customer Reviews	4.6 4.6 out of 5 stars (829)
Global Trade Identification Number	06976021760015
Included Components	Female to Male Cable
Item Highlight	Compatible with Arduino, Suitable for Robotics, Automation and Motion-Control Projects, Standard Interface, Direct Docking
Item Weight	0.21 kg
Manufacturer	ELEGOO
Material Type	Metal, Plastic, Glass/Acrylic
Model	EL-SM-003
Model Name	EL-SM-003
Number of Items	5
Number of Packs	5
Part Number	EL-SM-003
Speed	9.38 rpm
UPC	746591610357
Unit Count	5 Count
Voltage	5 volts

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₩40062

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Great experience from order to delivery. Highly recommended!

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