Thanks for your attention. You guys are the best!
@chris101, yes, the tilt trigger will only work when there is an input voltage of a certain value. I didn't want it turning on when the signal was super low. I'll show my work: a formula for the resistor dividers, anticipated behavior, and then actual outputs.
Yes, that's right, @alexpikkert! I'm sorry I didn't post a better schematic. I'm trying to make a wiring diagram someone can follow if they don't know how to read a schematic. I think I will connect pin 4 to pin 8 (VCC) after all.
Anyhoo, think of this as a preview for a mini challenge I'm putting together for us hardware Bitsters. How does a #555 Challenge sound? I have ideas, but I want to include other folks' ideas in the challenge, too. Let me know your thoughts...