I managed to build a system using Wemos D1 R1 connected to my website to retrieve data to power on or off a 5V relay. Now I would like to expand the project to control all my house outlet. Assuming I have, 5 rooms each of which has 5 electricity wires to control. My question is what is the best setup to achieve my goal in terms of efficiency and cost optimization. If I clone my current setup, I would be needing Wemos Module for every room that connecting separately to my Wifi and then to my server which seems too much for me. So what would you recommend?
Thoughts:
- Can I use one single central Wemos and then communicate to each room through ESP2866 or 433MHZ RF modules.
- I would be using at least 4 channel 5V relay Module. Could it be powered using 5V in Wemos or Arduino or should be powered with adapter
- If I want to control a fridge or AC or water heater, should I need SS Relay or any relay would suffice
- if SS Relay to be used, I have read that heat sink or fan should be included, is that a must?