Introduction: Smart Lamp With ESP8266 & Amazon Echo

This Instructable guides you along with me in upgrading a vintage lamp with voice-control using an ESP8266 microntroller and Amazon Echo/Alexa. The Arduino code emulates a Belkin WeMo device using the fauxmoESP library, which makes setup a breeze.

For a full primer on the Arduino ESP8266 workflow, check out my free Instructables Internet of Things Class, and check out Paige's Lamps Class for more lighting inspiration and know-how. If you're new to Arduino, we have an intro class for that, too.

This project uses AC electricity, which could harm you or start a fire-- don't leave this project connected to power unattended, and if you don't know what you're doing, work under the supervision of someone who does.

For this project, you will need:

For my particular wooden lamp base:

  • Wood chisel and mallet
  • Vice
  • Hacksaw
  • Metal file
  • Drill/press with forstner bits
  • Sander wth 220 grit paper
  • Wood finish (with gloves, brush, etc.- read package instructions)

In addition to ESP8266 board support, you should install the following Arduino libraries (search in library manager or manually place folder in Arduino/libraries):

I learned about this method from this Adafruit tutorial: Easy Alexa (Echo) Control of your ESP8266 Huzzah, which has plenty more useful info about using this code in your own projects.

Step 1: Connect Relay

To control the AC portion of the circuit, I'm using a Power Relay FeatherWing-- just interrupt the hot lamp wire and plug the stripped ends into the Normally Open and Common screw terminals. Remember, if you don't know AC, find someone who does to supervise. My lamp had a switch along the cord, so I just removed it and used the wire that the switch had been controlling.

Don't forget to bridge one of the jumpers on the underside of the board, corresponding with the microcontroller pin you'll use on the ESP8266. I followed the setup tutorial for the Power Relay FeatherWing and bridged the jumper shown to control the relay with pin 13 on my Feather Huzzah ESP8266.

I always build a breadboard prototype of these types of circuits first, even if the ultimate goal is to get everything to fit in the wooden base of the lamp.

Step 2: Program Microcontroller & Test

The Arduino code for this project uses the example sketch for the fauxmoESP library, which emulates a Belkin WeMo device. Consequently, configuring your homebrew is exactly the same as the commercial device, which is a breeze in the Alexa app. For natural speech's sake, I've named my device "the light."

I decided later to add a power override switch so the lamp could be controlled independently of the voice commands. That's why it's not in the breadboard photos here, but appears later during the wood step. You don't strictly need the button to test the code, so you're all good either way. Watch the video embedded in Step 1 to see me explain how the button code works! Download the code from this step and plug in your own wifi network name and password, and customize the name of your device.

Step 3: Chisel Wood Base to Fit Components

After confirming that everything works, it's time to tackle the woodworking portion of this project. This lamp is held together by a threaded rod, which is easy to shorten with a saw or rotary tool cutoff wheel, then filed smooth so the adjuster flange can still be screwed on. I chiseled out the wood base to accomodate my components.

I sanded the wood base to remove any dings from messing with it, and finished it with some wood stain.

Step 4: Use It!

It feels natural to say "Alexa, turn the light on," so I felt extra clever in naming my smart light. To have multiple devices on the same network, you could tell them apart by naming them "the hallway light" or "the nightlight," for example. Is this really any better than purchasing a WeMo switch? If you've read this far in the Instructable, surely we can agree that it's just more fun to build your own, especially with the custom vintage lamp upgrade and all-in-one design.

What smart home projects do you have under your thinking cap? Let me know what you're working on in the comments below.

Comments

author
Danny Lu made it! (author)2017-07-19

I got the adafruit esp 8266 board, set everything up, and uploaded the program. But the echo dot is just not discovering it. Since it's a WeMo emulator, do I have to enable the WeMo skill? If so I don't have a WeMo switch, is there any way around it? (It only lets me enable the skill if I have a WeMo switch)

author
bekathwia made it! (author)bekathwia2017-07-22

The device does ultimately show up as a WeMo Switch, but I did not have to enable the WeMo skill to get it to show up in the app.

Before jumping to the app side, you might want to confirm that your ESP8266 is successfully joining your wifi (did you update the username and password in the sketch?). Resetting your board while the Serial Monitor is open should help you determine if it's just a network connection thing.

author
Danny Lu made it! (author)Danny Lu2017-07-22

The wifi is connected, in the end it says "STATION Mode, SSID: REBA, IP address: 192.168.200.11".

But whenever I try to discover devices it doesn't show anything. I'm using the Echo Dot. I'm thinking it's a new update that made it not connectable.

author
bekathwia made it! (author)bekathwia2017-07-23

It's hubris to assume because it's not working, it must be because of somebody else-- there are a lot of little twiddly things involved in troubleshooting IoT projects. Don't give up! I made this project one week ago and just checked-- I'm able to discover the device running this code again and again on my android device. Here are some more things to try:

-Is your Dot registered in your Alexa app? The app establishes the bridge between the voice commands and the ESP8266. If your house is anything like mine, there was some initial confusion about whose Amazon account was really connected to the Dot.

-Is your Alexa app up to date? Can you access Smart Home>Devices>Discover? Try resetting the ESP8266 during the app's discover process, and restarting your phone.

-Oh, and make sure your phone is on the same wifi network as the ESP8266.

If any of these solve the problem, please let me know and I'll add some troubleshooting info to the project-- as I mentioned, I didn't have any trouble discovering the device, a week ago or today.

author
Danny Lu made it! (author)Danny Lu2017-07-22

I'm also using the second generation Echo Dot.

author
UNSEPARABLE TECHSCIENTIFICS made it! (author)2017-07-18

NICE AND COOL, BUT IT IS SOMETHING EXPENSIVE TO BUY THESE MATERIALS IN AMAZON... I HAVE OTHER IDEA AND MORE CHEAPER...

THANKS FOR YOUR PROJECT ANYWAY!!!!

author
JohnZ1 made it! (author)2017-07-18

Is there a way to do this without Adafruit's overpriced components?

author
bekathwia made it! (author)bekathwia2017-07-18

Sure, use any ESP8266 microcontroller and relay you like! Pin configurations will vary. I like the easy plug and play nature of the Feather boards, and Adafruit's reliable board quality and customer support.

author
adillbeck made it! (author)adillbeck2017-07-18

Yes. I'm currently working on a project that uses an ESP8266-01 from China ($2) that will do the same thing for a pool pump. The Adafruit board looks nice, and makes it so you don't really have to do any soldering, but at $16 it's still just an ESP8266. If you want to just plug it together, upload the sketch, and have a working project then this solution is pretty good.

author
Helder4u made it! (author)2017-07-18

nice :)

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Bio: Becky Stern is a content creator at Instructables. She has authored hundreds of tutorials about everything from wearable electronics to knitting. Before joining Instructables, Becky ... More »
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