PLAN / USE CASE:
I'm planning to build a 360° turntable with a Nema17 step motor, that is controlled by an arduino uno r3, A4988 step motor driver and is supplied with a 12V 2A external wall adapter. (arduino is powered separately via usb or onboard dc power socket)
I'm not planning to run the stepper motor at "high" speeds, since I want to film and photograph objects that are rotating fairly slowly (around 6 to 10rpm). When taking photographs, the stepper motor will be stopped every time I want to take a photo.Not sure if this is the correct context for this kind of problem. If not, feel free to direct me!
USED PARTS & DATASHEETS:
Disclaimer - I did not build anything yet, because the parts have yet to arrive.
I oriented myself on this source
(I am assuming that I did a lot of things wrong, because I'm really new to this!)
1. Power supply:
- Will the power supply be sufficient enough to run the A4988 and the Nema17?
- if not, what would you recommend and how did you calculate it?
2. Step motor:
- Is it correct, that the step motor has a holding torque of around 3,67kg-cm?
- Are the rated voltage and rated current really "only" 2,4V and 1,3A? And should I power it with a 12V power supply?
- Do I need anything else, if I want to run the motor at low speeds or does it support that, in combination with the driver, from the start?
3. Step motor driver:
- Do you have experience with this particular step driver?
- Are there other drivers, that would be better suited for my goal?
Are there any other things that I really should pay attention too, if shopping for other parts or while building the circuit? - don't want to fry everything with the first try EDIT:
In another forum I got the question, why I want to build the "system" from scratch and why I couldn't just copy what someone else has already done. - like these guys [LINK
My answer: I want to learn the dos and don'ts of the hard-/ software I use. I want to be able to calculate the necessary factors myself so I can make changes to the setup when I want, without running into a new information/ knowledge gap every time. Thank you very much for your help on this, really means a lot!