This video features a circuit that triggers a triac using a DC: https://www.youtube.com/watch?v=ZXXup79B6Gc
I would like to make a little modification on it it. The video says that I have to connect the "Neutral" of mains to "Negative" of the DC battery, this is a bad restriction for me because I want to connect AC mains at any direction (position), no matter where the hot(live) line is. Any Ideas? Can optoTriac do it?