What stepper motor should I buy?

I am new to stepper motors and didn't have one. Just need to make sure that I will buy the correct stepper. My project is about DSLR camera pan + tilt and for slider, so it will be 3 steppers. Maybe can carry 1.5kg - 2kgI already have the following:Battery: Laptop powerbank USB1:5V/2.1A USB2: QC2.0 port 5V/2A 9V/2A 12V/ 2ADriver: Adafruit Motor Shield V2 for ArduinoArduino: DFRduino UNO R3And some 1:40 reduction gears from past projectAbout the stepper I'm planning to order in Bangood.com and here is my choices: 12-24v, 1.8 step, 0.5 amps, 20 resistance, 1000g.cm hold, 80g.cm detent 12-24v, 1.8 step, 0.28 amps, 26 resistance, 700g.cm hold, 60g.cm detent 12v , 1.8 step, 0.4 amps, 30 resistance, 28n.cm hold, 1.6n.cm detent 12v, 1.8 step, 0.4 amps, 30 resistance, 260mN.m hold, 12mN.m detentPlease let me know what should be best for my project. I'm not expert in steppers. If you have any suggestions that would be great.Thank you!

Postedby coreuploadera few seconds ago

Can I merge the"arduino bluetooth robot" project with a " sound responding robot " project?

I would like to make a robot that follows the sound of a clap but when it finds an obstacle it stop and it waits for a commant from the phone.

Askedby ΜαρίναΤ5 hours ago