I have a use case where I should apply a push action and then rotate 45 degrees or so. I want to know what kind of motors I should look for! (google talks about servo motor / potentio motor, etc.). I want to listen from experts on this.
It is an IoT exercise I am working on with my software knowledge. I have Arduino Uno kit, but I can use a better / different one if needed.
I need suggestion on motors (different strengths), their precise control and a way to confirm the action completion.
Arduino is the easiest solution, they already have prepared templates for controlling a servo motor that lets you do what you want in no time. Basically you can just pass the angle value in an arduino function.
Servo motors are quite easy as well to control, for some projects i used some small plastic servos with plastic gears (the cheapest in the market), for testing purposes they totally do the job with no price:
http://www.micropik.com/PDF/SG90Servo.pdf
Better quality servo with metal gears:
https://www.adafruit.com/product/1142
There are some servos that don't have closed loop control, and can be used using the some PWM signals but acting with continuous rotation:
https://www.adafruit.com/product/154
Have fun !