hello!
I want to order some 28BYJ-48 Stepper Motors for general projects. i noticed they have 5V and 12v. If anyone has used both, can you advice which is better, or what the operational differences are.
I'll be using these with a Nano. I realize 5v is simpler since the Nano uses 5v, but I have no problem supplying 12v either. Is it worth spending more for the 12v?
Thanks
Max
12v motors have more ‘power’ and better RPM maximum speed.
However you can run a 5v motor from 12v if you install series dropping resistor to drop the 7 extra volts.
The instantaneous voltage across the coil is 12v with exponential decay to 5v; gives more torque.
You can run a 5V 28BYJ motor as a bipolar 12V motor, by severing the center tap. That allows you to use standard bipolar motor drivers, and also increases the available torque and power.
In fact, it works just fine to ignore the center tap and not bother with the modification, but the purists might object.
Thanks,
So you think I am better off ordering the 12v motors? They are a couple dollars more.
Right now, I'm trying to get a set of 5v motors and a Nano to run as a Polargraph. That is with the stock 2003 drivers at 5v.
Buy the motors that meet your specifications.
5V motor current = ~ 180mA, 12V = ~ 75ma.