Longruner 5x Geared Stepper Motor 28byj 48 Uln2003 5v Stepper Motor Uln2003 Driver Board for arduino LK67
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- A, B, C, D four-phase LED indicates the status of the stepper motor work.
- Stepper motor with a standard interface.
- Drive Module Board Size:1.26 inchsX1.38inchs.
- Motor diameter: 1.1 inches.Wire length：9.05 inchs.
- Stepping angle: 5.625 x 1/64.Reduction ratio: 1/64.
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|Color||Geared Stepper Motor|
|Package Height||1.7 x 4.8 x 6.5 inches|
|Shipping Weight||0.65 pounds|
Longruner 5x Geared Stepper Motor 28byj 48 Uln2003 5v Stepper Motor Uln2003 Driver Board for arduino LK67 Features: - A, B, C, D four-phase LED indicates the status of the stepper motor work. - Stepper motor with a standard interface, when used directly pluggable. - 5 line 4 phase can be used for ordinary. ULN2003 chip driver, connect to the 2 phase , support the development board，With convenient use, direct docking. - Rated Voltage: DC5V 4-phase - Insulation Resistance: >10MΩ (500V) - Dielectric Strength: 600V AC / 1mA / 1s - Step angle: 5.625 x 1/64 - DC Resistance: 200Ω±7% (25C) - Reduction ratio: 1/64 - Insulation Grade: A - No-load Pull in Frequency: >600Hz - No-load Pull out Frequency: >1000Hz - Pull in Torque: >34.3mN.m(120Hz) - Detent Torque: >34.3mN.m - Temperature Rise: 40K(120Hz) Package including: 5 set Uln2003 Stepper Motor + Driver Board
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First, I would say that I'm impressed with the packaging. After getting so many parts barely in a cheap plastic bag, this was like a breath of fresh air. Some thought and care went into this. Everything came in a hard plastic case, with the individual driver boards in sealed ESD-safe bags. Mine did come with a resistor color code reference card, which I didn't need but is nonetheless handy for the beginner.
Second is the motors themselves. Considering I paid a little over $12 for the whole box of 5 plus driver boards, I can't say I'm disappointed in their performance. I was able to build 2 circuit plotters and still have 1 motor left for another future project. It's plenty for someone that doesn't need as much now. If that is the case, you can consider it an investment since the cost per motor at this price is much lower than buying them one or two at a time.
Performance of the motors themselves has been quite good. Going strong at over 50 hours of non-continuous operation, and they haven't given out yet. They are quick and responsive to commands through the driver boards. If they don't seem to be responsive enough, consider swapping out the drivers first with something higher-end.Of course, that does mean spending more money, but the motors themselves don't seem to be a problem for me.
Programming for these is dead easy. There are tons of examples out there from simple to complex on the Internet. Github is a great resource for Arduino and PIC uC source code.
One thing you should keep in mind when building anything with these, or anything that draws a current load at 1mA/s or higher like these motors. The driver ICs can get fairly hot in short order, so consider putting a fan on them or keep them in an area with some airflow across their surface. Not doing this step can lower the lifespan of them quickly, and before you know it you'll be in the market for replacements.
If it's more torque than the specified 34.3mN.m that you need, I would recommend looking for something like a larger NEMA 17 stepper motor or higher with a good h-bridge to drive it via microcontroller.
You really can't go wrong with this kit, though. For smaller projects that don't require a lot of industrial-level torque but do require effective precision, you can't do much better for the price.