
Controlling Motors • Chapter 3 51
a Control Center unit, you can safely use them to run your motors. Don’t
use non-LEGO electricity sources.They might harm your motors.
In some cases, you want to control more than a single motor from the same
RCX output port. Is this safe for your RCX and your motors? Yes, and with no
risk of damaging either item.The only thing to point out is that the RCX has a
current-limiting device behind each port that prevents your motor from drawing
too much current to avoid any possible damage during stall situations.When you
connect two or more motors to the same port, they must share the maximum
available current, thus limiting ...