Semi-success

Got new arduino, hooked servo to shower knob. It was able to turn the knob once the water was on, but it wasn't able to turn it on or turn it off all the way. Booo! It's also possible I'm not getting the full available torque because I'm powering the servo off the arduino instead of using a separate power supply. I'll try that later, though, because my next step is to get the servo to respond to the temperature sensor. Here's where it may get dicey, because I'm not really a programmer. But if I can't do it, I'm sure one of my programmer friends would find it simple. I love my friends.