Folks, it’s not looking great. I think that the irRemote library that I’m using is using the same timer as the servo library, so I made a test sketch without remote control. The servo and sound work great in that sketch, but the motor still won’t turn on. I’ve tried using another motor driver and changing my power supply, but the thing won’t turn on. The motor itself isn’t busted - I checked - but there’s something going on. Over the next few days, I’ll do some more in-depth debugging for that, and try to reintegrate the remote control. My sister is going to camp for the next two weeks, though, so once I make the remote control work I’ll leave it alone until she gets back.