Power supply

I have two stepper motors with following specifications ,
Rated current 1.4A,
Voltage 8V,
I want to run this motors with Arduino uno and l293d
Module . Could you help me how much power needs to run this motors.
Thank you

Do you have something like the Adafruit motor shield?

Note that the K293D max current capacity is less than half of your motor’s rating. I would strongly suggest a modern stepper drivers instead. That not only could support the full rated current of the motor but can also support microstepping for much smoother movement.

Can you tell us more about what you are trying to accomplish?