Arduino 28BYJ48 5V Stepper Motor High Torque Stepper Motor with Gear Reduction, so it has good torque for its size, but relatively slow motion. These motors/drivers are made by the millions for A/C units, fans, duct controls etc. which is why they are so inexpensive. Available in 5V or 12V.

Details/ Specificatoins:

1. Model : 28BYJ-48
2. Number of Phase : 4
3. Speed Variation Ratio : 1/64
4. Stride Angle : 5.625 /64
5. Rated voltage : DC [5v – 12v]
6. DC resistance : 5v: 607%(25); 12v: 1307%(25)
7. Frequency : 100Hz
8. Idle In-traction Frequency : > 600Hz
9. Idle Out-traction Frequency : > 1000Hz
10. In-traction Torque >34.3mN.m(120Hz)
11. Self-positioning Torque : 5v: >29.3mN.m; 12v: >42.1mN.m
12. Friction torque : 600-1200 gf.cm
13. Pull in torque : 300 gf.cm
14. Insulated resistance >10M(500V)
15. Insulated electricity power : 600VAC/1mA/1s
16. Insulation grade : A
17. Rise in Temperature <40K(120Hz)
18. Noise <35dB(120Hz,No load,10cm)

Package Includes:

• 1 X Stepper motor
• 1 X uln2003 driver