Please help me figure out my house's wiring - no ground or neutral in one room, extra wires in another

[harjms]

@szboatwright

• Do I need to ground the den switch? Is it grounded from the metal box? If it needs to be grounded, how do I go about doing that?
• How do I stop the flickering?
• How do I insure the lights stay off when I turn the switch off and don’t just go to the lowest dim setting?
• What is the purpose of the extra wire in the hall switch, and how do I go about installing the smart switch with it?

1. you could extend the ground wire (while keeping it wrapped around the green screw in the back of the box to tie into the switch. Or attach the ground wire to the switch and add another piece of ground wire back to the box to keep the box grounded.
2. You most likely need a bypass (Aeotec Bypass or similar; sold on Inovelli) as your switch is configured as a non-neutral switch. That should help with flickering as others have had similar results.
3. The bypass will also help with this.
4. this is a 3-way switch. You’ll need to locate the other half and we’ll be able to help you map it out for your switch connections.