12V Steppper Motor

Hi, I'm new to arduino codes and circuits. The fact is that I have a 12V stepper motor and I am using an Arduino NANO with an expansion board (similar to the MKR2 UNO ADAPTER board), this has 3V3 and 5V outputs, and as you may have already realized, I need to power the motor power driver with 12V for it to move, but the problem is that I am sourcing the expansion board with a 9V PP3 battery. So my question would be if it is possible to connect the battery in series with a 3V3 output, thus giving me 12V output, enough to power the driver.

I suppose you could, effectively elevating the 9V Gnd to 3.3V so, the positive would measure 12.3.

HOWEVER: the 3.3V output on a real Nano comes from the FT232 chip that provides the USB interface, and is only good for 50mA. A 9V battery only has total capacity of 300-400mAH. A stepper motor wil drain that pretty quick.

Do yourself a favor and get a 12V wallwart, or an 8-cell battery pack to create the 12V.

https://www.mpja.com/12-VDC-35A-Plug-Adapter-Netgear-Used/productinfo/35262+PS/
or
https://www.mpja.com/12-Volt-DC-Plug-Power-Supply-25A-Netgear/productinfo/33380+PS/
or
https://www.mpja.com/12-Volt-Plug-Power-Adapter-2A/productinfo/34142+PS/
depending on how much current the stepper needs. Can always go bigger than you rated, the stepper will only draw as much as it needs. (i.e., a 1A rated stepper will only draw 1A, even if a 3A supply is used).

enzorp5:
Hi, I'm new to arduino codes and circuits. The fact is that I have a 12V stepper motor

Please post a link to the specifications for your motor.

The motor will almost certainly work better with an 18v or 24 supply if you use a specialised stepper driver such as the DRV8825 which can limit the current to protect the motor.

A redundant laptop power supply would probably be suitable. I have one that produces 6 amps at 19v.

...R
Stepper Motor Basics
Simple Stepper Code

I finally realized that the problem for which the motor did not move was that the power driver was burned out, so I changed it for a new one and now everything works correctly, of course the motor does not move at the speed that It should because instead of feeding it with 12 volts I do it with 9V from the battery. Thanks for responding my thread, really, you helped a lot :).

Stepper motors don't have a voltage rating, only a current rating, resistance and inductance.

Please always provide a link to the datasheet or product page for any piece of hardware you
mention so we can find out what it is.

A 9V battery isn't suitable for powering any motor, let alone steppers.