I have 5 P-Q12 linear actuator that I want to use for my prosthetic hand and I wanted to control it using MyoWare sensor and that is connected to Arduino Uno rev. What is the best control board that I can use? Thank you
Pretty much every Arduino motor shield can work with that small motor. Older ones with L298n chips need extra voltage above the motor voltage.
Don't be afraid to run the 6V actuator on 12V. Just don't run it at 100% power for longer than a second.