I’m working on some wiring in my old House, but all the wires are the same color, which has made it tricky to figure out which one is the neutral wire. I WAnt to avoid any mistakes, so I’m hoping to get some guidance on how to correctly identify the neutral using a multimeter.

Hi everyone! I'm an electrical engineering student who is new to home automation projects but has started working on one and needs some advice. I WAnt to create a system where I can control the lights in my House wirelessly. Specifically, I’d like to have a WAll-mounted switch that can wirelessly communicate with an Arduino-based controller connected to the lights. The goal is to replace the traditional wired switches with wireless ones that can send on/off commands to the Arduino, which will then control a relay to turn the lights on or off. I've researc ...