Thanks. That sounds interesting. I just read about SPDT latching relays. It was very helpful. I was searching for some stuff related to latched SPDT relays with arduino but couldn't find any. Please do let me know of any useful resources in this direction.
From what I understand, the following two options are available:
- Replace one of the switches in 2-way switch by the SPDT latched relay controlled by arduino
- Add SPDT latched relay controlled by arduino to the existing 2-way switch ending up 3-way switch
Please do let me know if I understood right.