Wireless, Mains-Rated Relay Module with an ESP01 and Arduino Cloud

ESP-01s are tiny boards that offer a few great IoT features, like WiFi connectivity. The small size makes them a great option for applications with limited physical space. We've been experimenting with combining an ESP-01, a mains rated relay, and the Arduino Cloud (cloud.arduino.cc), to give you a super compact and cheap way to make any appliance remote-controlled.
You'll need a free Arduino Cloud account to get started: cloud.arduino.cc

[@PhG1961]

What a wonderfull time and era we live in !

[@xWillyHD]

Good and basic start to use Arduino Cloud, Nice

[@ulfhille9336]

At time 3:22 you set the variable to Read Only. In the sketch you have it set to Read & Write. (Time 4:6). If you set the variable to Read only, you will not get this line in your code "void onRelayChange()". Have you done some changed that are not in your video?

[@juanbenavente7976]

3:21 The variable should be read and write. If not the setup doesn’t work. I tried myself. But the rest of the video is ok 👍

[@manoferreira2009]

On the serial adapter, what is the function of the red wire that is soldered and on which ports to solder?

[@gator_fz]

wow, that's awesome

[@girishpanchal9072]

Hi, thanks for nice video. Can I connect to esp01 which is on home wifi from my smartphone which is on other network maybe in some other region?

[@pasinduelectronic1955]

Can i connect multiple relay module for one dashboard

[@erment55]

I did it as described in the video and I could never get it to work.

[@wbruwan83]

how to turn on & off relay through firebase esp 01 , please need to code

[@AarshParashar]

Does adruino cloud have a subscription fee?

[@garymccrohan7247]

I can't get it to upload the code, it keeps timing out. I know it's the right port because it works in arduino IDE. Is there any settings I need to change?

[@adityaagarwal3010]

Have you made sure that the module is in programming mode? Make sure to put it into programming mode and pull the reset pin high.

[@awabmohamed9950]

In my case the relay just run 2s and stop