Powering Nano and stepper motor with a single supply - circuit design

Projects General Guidance
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Hi all, first post on the forum; I hope it's well-structured and appropriate. Thank you in advance for your advice and expertise. I'm a beginner in electronics, so go easy please!

I am aiming to run a two-phase bipolar stepper motor using a Trinamic TMC2100 SilentStepStick motor driver and an Arduino Nano V3 off a single power source, if possible. I'll be using the stepper to open and then close a curtain once per day. The motor is rated for 12V and 350 mA, and through the VIN pin the Nano can regulate 7-12V down to 5V which it runs on. The motor has 34 Ohms of internal resistance, and the motor driver has a current-adjusting potentiometer.

Question 1: Can I power both the Nano and the stepper off of a single DC power source, and if so, how should I go about it? Can I use a single 12V 500mA source and adjust the pot or add resistors to bring the current down to 350mA? Or should I use a larger PS (say 24V) and a voltage divider to power the two?

Question 2: Do I run the risk of bowning out the Nano because of noise spikes when the motor kicks in? And thus, would I be better off powering the two separately or adding another voltage regulator or other mechanism to alleviate this issue?

If you identify any other issues I may have overlooked please let me know as well! Thank you for your help.

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For moving a curtain you are better off with an ordinary DC motor.

For your stepper motor the current is 0.7A for the 2 phases @ 12V.

For best operation stepper motors require a higher voltage than rated and a current limiting driver.

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DrDiettrich:
For moving a curtain you are better off with an ordinary DC motor.

For your stepper motor the current is 0.7A for the 2 phases @ 12V.

For best operation stepper motors require a higher voltage than rated and a current limiting driver.

Ahh, thank you for the clarification on the current req. I'll look into a current limiting divider. I chose a stepper since I need precise, variable control of where the light falls to get good results in an experiment.

So, do you think a 12V 1A DC source would suffice for my application?