ELEGOO 5 Sets 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Board for 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.

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.