Do you feel your employer would inform you that they are interviewing potential replacements for your position? I wouldn't feel obligated to tell them I was looking for another job, but wouldn't deny it if they came out and asked.
Your computer (presumably a laptop) is probably turning off your USB ports to conserve power. Try disabling the "selective suspend" feature.
In Device Manager, find your device and locate the parent USB hub that it is connected to. From properties, go to the Power Management tab and make sure...
A little late, but here it is anyway:
1) Create a PLC timer (TON) that is enabled when the fan is on. Later you can adjust the timer settings to get the animation desired. Start with 0 to 3 in full seconds.
2) You want this timer to automatically reset itself, so insert an XIO instruction...
Definitely ask for the raise. All they can do is say no. I'm in the same field as you (with less experience) and I'm in a very inexpensive city. That said, I would probably not accept a salary under $50k/yr.
As you all know, first prize is a Cadillac Eldorado. Anybody want to see second prize? Second prize is a set of steak knives. Third prize is you're fired.