Single rail + ballscrew, can it be done?

[Desertboy]

OK
https://www.aliexpress.com/item/1005006394416452.html

Could I buy the kit and a longer belt, then 2040 profile 800mm and make a longer one

I want about 70cm of camera travel if I can

not sure if that's Nema 14 or 17 but it doesn't matter both will have enough torque and can be driven by an A4988

[m.marino]

OK
https://www.aliexpress.com/item/1005006394416452.html

Could I buy the kit and a longer belt, then 2040 profile 800mm and make a longer one

I want about 70cm of camera travel if I can

not sure if that's Nema 14 or 17 but it doesn't matter both will have enough torque and can be driven by an A4988

Do you have access to a 3D printer? As what you stating is basically buying it for the motor, controller and mounting sections. A motor controller you can get that will work with either an Arduino or Raspberry pi. Motors are cheap these days and the mounting brackets can easily be designed in a simple CAD program. You might be able to find this on printables.com, Cults3D, or such. While you will have to do the building and assembly yourself, you will know very well all the parts and what could go wrong.

Just an option, not meaning any judgement. Best of Luck.