Smart Socket

Introduction: Smart Socket

The smart socket provides an easy way to add old fashioned, non digital machines to become a bit smarter. For example, you can make it so your coffee machine makes you coffee every morning, right before you wake up. Currently it works by letting you program different timeframes in which different sockets would be active. So all you have to do is put in a start time and an end time for each socket, and turn on your machine with all the ingredients in it, waiting for power.

There's much more possible by attaching a simple microprocessor to a socket, and programmable times is just one of many possibilities.

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: Hooking Up Your Arduino

**Note: The resistors in the picture are not the correct values. they all need to be red|red|brown|gold.**

Step 2: Coding

The code setup I haven't quite figured out yet. Since you only have 3 buttons, you have to be smart about how you edit the start and end times of the sockets.

For the LCD display, download the liquidcrystal library ( the code provided in this tutorial.

For the buttons you want to use digitalRead() on the pins you're using for the buttons. Then you have to track the state of the LCD (What it is currently displaying), and the state of the buttons (depending on what LCD is displaying, the buttons should behave differently).

The rest of the code is in the image

**NOTE** code is not finished, project doesn't work yet

I attached the raw text. Feel free to use it however you want.

Step 3: Project Goals

The last part is connecting relays to your arduino, and turn them on whenever the time reaches the intervals. These are orange in the schematic. Note that they have to be pretty strong to be able to handle the power grid, so be careful.

Be the First to Share


    • Backyard Contest

      Backyard Contest
    • Silly Hats Speed Challenge

      Silly Hats Speed Challenge
    • Arduino Contest 2020

      Arduino Contest 2020



    3 years ago

    Cool, thanks for sharing :)