Hi, just a quick check to make sure the hardware for my project of automatic curtains is correct. This is my first experience with arduino and hardware in general and I want to focus on learning the hardware and knowing what I'll need. I am planning on using a 36V max voltage 2A Nema 17 with a TMC2208 driver and Arduino nano. For power, I am planning on using a 12V/3A power supply with a buck converter for the logic power. Would these parts all be compatible or are there more optimal parts I could use? I also hope to try connecting the system to wifi and be able to control it through amazon echo. What other hardware might I need to accomplish this? Also, if there are any other tips you may have for starting off with hardware, please let me know 
Thanks!
Will it have enough torque to move the curtains when supplied with 12V?
Then I advise you to put the project on hold, and try some simpler projects first, to gain some experience. It is the only way to be able to work independently.
If some of those are a subset of your project, like utilizing Echo, then you will be ahead of the game in those areas...
Hi, @seojun_yn
Welcome to the forum.
Hi,
just a quick check to make sure the hardware for my project of automatic curtains is correct.
This is my first experience with arduino and hardware in general and I want to focus on learning the hardware and knowing what I'll need.
I am planning on using a 36V max voltage 2A Nema 17 with a TMC2208 driver and Arduino nano.
For power, I am planning on using a 12V/3A power supply with a buck converter for the logic power.
Would these parts all be compatible or are there more optimal parts I could use? I also hope to try connecting the system to wifi and be able to control it through amazon echo.
What other hardware might I need to accomplish this?
Also, if there are any other tips you may have for starting off with hardware, please let me know
Thanks!
Sorry but had to spread it out into some point from, makes it easier to read and will probably attract more readers.
Tom... 
Moved to the section Project Guidance to get more readers.
Are we talking about this kind of curtains
or this kind of curtains?
Big difference in the design specifications that you asked about...
Thanks, I appreciate it!
I was thinking some blackout curtains for a medium sized bedroom window.
I plan on using one medium sized blackout curtain for a bedroom window that is about 6' by 4'. Will 12V supply enough torque or should I go for a psu with a voltage closer to the 36V?
Maybe I just should have asked:
Will your motor have enough torque?
(ignore the reference to 12V)
From your description it sounds like you are thinking of using a NEMA 17 stepper motor? The only advantage of using a stepper in this sort of application is that you can control where it stops without any limit switches, through the number of steps. Against that, if moving at any speed they are horribly noisy, don't have much torque for their size, and are more expensive. I think you would be better off with a low cost DC geared motor though your power supply might be a bit underpowered. It could be driven even with the venerable L298 - people are rather rude about them on here but they are very cheap, you can buy one mounted on a little module for not much money, and they would happily drive a DC gear motor like this:
If you needed more torque:
Motor would drive a drum on which you wind the cord pulling the curtains - giving some extra gearing in effect. But you would need to do some simple experiments to measure how much force you need to pull the cord. Also it would need limit switches to tell it when to stop.
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