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

These are super easy to use and work great for the price. Unloaded they seem to need about 2.5 milliseconds for each step. As for reliability, I've used 3 out of the pack of 5 and all worked flawlessly. This is my second batch of these things and I've never had any trouble with them. One of them I tried running at 13.8 volts to get more torque for a particular job it was too weak for at 5V. It got hot enough to melt the PLA plastic I'd 3d printed to attach to it because I left it on too long. The driver chip was also very hot. Both worked fine after cooling down. Obviously you shouldn't do this and YMMV but I was really impressed the motor and driver survived that. You can run it as long as you want at 5V and it won't get hot.

I wanted to learn more about stepper motors when working with 3D printers. These were reasonably priced so i bought a few. First things first, usually foreign hobby electronics have extremely bad documentation. Elegoo is different and has all of the documentation you'll need to get the motor running including schematics and data sheets. That alone is a huge plus. The motors are easy to hook up and get running, just two powers wires and four control wires (pins 8, 9, 10, and 11 on the arduino) and you can use the Stepper library that is built in to the arduino ide to get the motor running. I can't remember the steps per revolution but these motors are gear reduced so they are extremely slow. I was hoping to build a micro camera gimbal but they are not quick enough so I'll have to think of any other use for them

These stepper motors are great for the price. They are very strong and sufficiently fast for any of my purposes. I read online that the reason they are so cheap is because they are mass produced for commercial uses, and it sounds totally plausible. These are great, versatile motors. Another reviewer mentioned that they run a bit hot, which I agree with. After a minute or so of continuous running, they start to get very warm, faster if you are running them fast or under load. Honestly, though, it's not much different than the other stepper motors I've been scavenging. For normal, non-continuous use applications, it should be fine. Although they are not super fast, I can't think of all that many applications when you would want a super fast stepper motor. With the amount of torque these have, you could gear it up anyway. I vaguely recall someone mentioning they were geared down inside the box, which seems plausible because the number of motor steps differs from the number of steps per revolution by like 32 or something, but honestly I can't remember. Sorry. If I end up taking one of these apart someday, I'll update. I won't take the time to make actual measurements for torque and speed because datasheets seem pretty readily available for these motors. The mounting holes are well placed and the cable is very convenient for quick and easy solderless connections. The motors are very sturdy and show no signs of wear despite my relentless abuse (on account of the low price). 5 Is a good number in a set. The ULN2003 driver modules are nice both for quickly testing and even for final installation, provided you are not strapped for space. The LEDs are useful for troubleshooting if you don't have much experience with stepper motors. In fact, if you don't have much experience with stepper motors, I highly recommend this set. It's cheap, versatile, and super easy to use. It's also convenient that these run on 5V. I think these take something like 500mA depending on speed, load, etc. , but I can't really remember well so that may be completely wrong. In any case, these are too big to run safely on the 5V pin of an arduino. All around, I highly recommend these stepper motors (or equivalents from other retailers) for a multitude of uses and there is a very good chance I'll be buying more of these in the future.

Nice packaging. Came with necessary cables to prototype. I used this with an ESP32 and a couple 5V power supplies to make some automatic curtain openers. Slow, but effective. Documentation could be better, but hey, they work.

A little slugish for what i am using it for. but over all its a great prodect

Todos los motores y controladores funcionan bien. Motores básicos con engranajes de plástico y sin mucho par, pero perfectos para aprender y diseñar. Además viene todo dentro de una caja de plástico ideal para almacenarlos y guardarlos. Lo recomiendo.

ottimo prezzo e buona qualità per i robot che crea mia figlia

Prodotto come da foto , perfettamente funzionante

bien presentados en cja con todo lo que se describe.

Kit completo para hacer funcionar sin otros aditivos, los motores. No le doy 5 estrellas porque podrían incluir un prospecto con los datos esquemáticos de los motores identificando las bobinas y relacionándolas con sus cables de salida, aunque esa información se consigue fácilmente por internet.