Relay Board (for 220v AC) and PWM AC?

Other Hardware General Electronics
1

Hi everyone,

Should be a quick question.
I just got a new Office and my first project will be some "home automation" using the Arduino as the brains.

I'm looking for a decent Relay Board (or just Relays I could use and make my own board).
Also, how would I go about PWM AC voltage? for light dimming and other stuff, what kind of components should i be looking at?

2

Also, how would I go about PWM AC voltage? for light dimming and other stuff, what kind of components should i be looking at?

You can't directly drive an AC load with PWM, what you can do is get a solid state relay that has proportional control. These are normally 10V, so you. Put the arduino's PWM output through a transistor to get it up to 10V then smooth it with an RC and apply it to the SSR's proportional input.