Hi Andrei

just to get the ball rolling before some one how uses the arduino replies

looking at the photo it looks like it shows the Arduino nano

which has 14 Digital I/O Pins (of which 6 provide PWM output)
and 8 Analog Input Pins

many arduino kits either use 4 pins per stepper motor
via either 4 of the 7 darlinton transistors in a ULN2003 ic
( instead of all 8 in a ULN2803 I would use )

or a L298N dual "H" bridge IC that has 4 input pins and 2 enable pins

These solutions are OK if your learning to use the arduino

but a ready made stepper motor driver with just 2 inputs - step and direction
makes more sence to me as it save arduini pins - uses 2 instead of 4
and gives you control of the current through the motor coils

for low power motors have a look at the A4988 & DRV8825 used on 3d printers


how many motors do you need to control at once

radio transmitter & receiver modules are readily available
https://www.instructables.com/id/RF-...dule-and-Ardu/

John