Anyone know how fast the Solenoids on the MINI RC can turn on and off?
Are you referring to the solenoids that you attach to the RC for pneumatics?
If you are, disgustingly fast; probably somewhere in the range of every 25 or 50ms. We’ve had problems before where we accidently coded something wrong, and it toggled the state of the pneumatic between open and closed as fast as possible. It makes nasty hissing noises at you.