Rollitup

Is Arduino like a Cherry Pi?

you mean Raspberry Pi? it's to transform 0-5v pwm on a digital pin to 0-10v pwm or analog

yes, the opamp or an NPN transistor with a separate 10-12v supply works for boosting the 5v pwm to 10v pwm. if you want a prebuilt multi channel booster check out : Robo Tank website in their parts section.