[DIY] 만원으로, 구형 보일러를 스마트하게,,, 스마트폰으로 보일러 켜고 끄고,, Turn an old boiler into a smart boiler

I was thinking about how to make an old boiler into a smart boiler, but first I tried to physically configure only turning the boiler on and off. If we study more, the day will come when we can even control the temperature. If you need more detailed explanation, please refer to my blog below. Making an old boiler into a smart IoT boiler, controlling it with a smartphone https://nullpark.tistory.com/57