Originally Posted by Ppeg34
I want upgrade my kettle to an e kettle but am realizing how expensive it can be to make one that automatically controls temperature.
My question is: Is it a cheaper alternative to buy a "dial" to control the amount of electricity flowing to the heating element? If this is already covered I apologize.
Basically I envision: Outlet -> cord -> "dial" -> cord -> heating element mounted to kettle.
You can use a pulse width modulator and an SSR to give you some rough control. I use this to control the strength of my boil. That will save you on the order of $50.
Search for Pulse Width Modulator or PWM and you'll find some links.
I use a DIY one that I built out of off-the-shelf electronics pieces. There are also some PWM kits that others have found for like $10 or something.
The SSR can be gotten on ebay for $15 or less, depending on how much of a load you are driving with it.
What is your budget, and how much power are you looking for inside the e-kettle? Is it just for heating water and trying to maintain a temp, or is it for boiling in, too?