Hello, I’m trying to set up a stepper motor that’s rated for 5v using an easyDriver and and Arduino. My only question right now is how much voltage is too much. I’d like to power it with a 2 cell lipo but don’t want to fry it because I have no back up. Is 7.2 volts too much? Should I use 4 AAs instead to be safe? I know the easyDriver can handle it it’s just the motor I’m worried about. Here’s a link to the motor.
https://www.digikey.com/en/products/det … D1B/417821
Thank you
In general it’s power that gets something too hot, sorry for continuing to state the obvious, but power is v * i. I highly doubt you’ll break down the insulation in the winding by over volt of 2.2v, I’d be more worried about flyback voltages if the winding goes open circuit damaging the winding insulation, but if you’re using a good stepper driver they handle that for you.
Page 9 of the A4988 datasheet (from big easy documents page) talks about PDM current control. More importantly for you is the elec. Characteristics on page 4 shows min operating voltage of 8V. You might want to study the information about the big easy closely.
Modern stepper drivers like the easydriver take care of motor voltage for you, all you need to do is set the current the motor operates best at and the driver will handle everything else for you. Just start with the current control all the way down and turn it up slowly until the motor operates well.
Also, more voltage is better than less, a 3 cell lipo will work longer and better for you than a 2 cell.
Awesome, thanks for the help.