DIY Smart Plant Pot





Introduction: DIY Smart Plant Pot

hello world,

please support our mission;

it was one year ago that i have published the plant pot - world's first stand alone smart plant pot that can email you when it's thirsty, cold, hot, sleeping etc.

a lot has changed since the first release. today I would like to share with you our latest and most stable version yet.

the plant pot is still,

open source hardware + software

solder-free, suitable for any age group

an all around educational tool

once completed the end user will know how to build circuits, write code and end up with a finished device that can teach you how to garden. no prior electronics or gardening experience needed.!!


here is a list of what we will be using;

wifi microcontroller - updated to wifi nodemcu

battery pack


RGB led module

temperature/humidity module

light sensor

water sensor

jumper wires



-- project kits available --


let's build..>

kits are now available on ebay, including the frame + all electronics. comment or message here or on facebook for more info

Step 1: Glue the Frame

download the laser cut frame here;

download 3D printed covers here;

ponoko online laser:


the assembly is very straight forward. hot glue one piece at a time, making sure all your joints are water sealed to protect the electronics


don't forget to place the magnets for the door

Step 2: Water Sensor

before inserting the water sensor, first carefully bend the connector legs to a 90 degree angle, this will help when wiring the circuit.


after this put the sensor in to the leg slots and hot glue the openings so they are water sealed as well.

Step 3: Battery and Arduino

the powerbank comes with a short usb cable that you can use to power the microcontroller.


for a more discrete look, you can hack the power bank and connect it to the microcontroller internally on the breadboard.

Step 4: Temperature, Light Sensors + RGB LED

now hot glue the remaining sensors, light and temperature.


RGB LED goes on the magnetic door.

Step 5: Wiring + Code

wire according to the schematics above

connect the usb cable to laptop

scroll down to upload sketch,

remember to change wifi settings on lines 18 & 19

choose "lillypad arduino usb" and the correct COM port and click ->run on arduino

you should see the data uploading on your thingspeak channel now (allow upto 2 minutes)


line 22 is the online webpage address so we can see the plant data on the internet;

1. go to & fill out the form to create an account

2. once the account is created, the page will change to your channels, click "new channel"

3. change the channel name and type in the fields that you want to record (temperature, light, humidity etc.) - save channel

4. click to "API Keys" tab and copy your write API key, this will be inserted into the code. - we are now ready to upload and capture data to our online channel where it will be graphed automatically and can be downloaded later on in excel format. - after you have created your channel you can also set e-mail alerts where the web page will automatically tweet "alarms" -

5. go to and create an account

6. go to and create a "new react"

7. name your react and change the alarm values, choose thing tweet as your action and add a twitter account (link your accounts). condition type: numeric, test frequency: on data insertion etc.. for more help:

8. once your react is saved and your twitter account is linked everything should be working, and you should be getting the alarms on your twitter channel/phone.


you can adjust light, temperature and water levels within the code (lines 119, 129 & 144) you will learn about the pattern of the location where your plant pot will be staying. and eventually get the settings just right. the pre-set numbers should be good for many plants. read more here;

Step 6: Paint + Logo

make sure to put tape around the openings to protect the electronics. i have used white matte textured spray paint. apply minimum 3 coats waiting in between minimum 30 minutes. make sure to paint outside.!!


download the official logo here;

Step 7: Soil + Seeds or Plants

it is now time to add soil and seeds or plants depending on which route you would like to take.. here are a few good instructables on how to start plants from seeds;



here is another instructable on showing you how to transplant an already grown plant;

Step 8: Conclusion

my dream is to teach the world how to garden and build electronics. combining the two just makes things better. i believe that in the future (very near) all plant pots will be "smart"


i already have a few companies as competitors, million dollar companies.. however the plant pot still stands as the most advanced one of them all because it is made by YOU and the open source community we have here at !!


thank you everybody for your support. please favorite and share this post with friends + family. also like us on


love & peace




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    do you have the coding in wifi shield ?

    hello, sry for late response. there are too many different possibilities why it might not be connecting. do you get sensor data readings.? your wiring maybe wrong..

    if the wiring was wrong at first, sometimes it does brick the board. that's a possibility. i'm pretty sure name with spaces are ok. at home i have spaces and it connects.


    please consider upgrading to nodemcu board, $5. i havent done a new instructables yet about this topic but if you follow the facebook page you can see more recent updates; &


    hope this helps..

    what is the ideal moisture limit for a plant when it is watered sufficiently??

    where zero being full moisture and 1023 being no moisture(readings in my sensor are reverse)

    when its not reversed, 0 being the driest. i set mine to <300..

    so in your case you can try >700 - to get a good adjustment. fully water the soil, until water comes out of the bottom of pot. and then don't water for 3-5days and check the numbers once/day same time at 3rd day and on. you will understand the number

    Is it possible to connect a ds18b20 sensor to this as well? I've tried a number of different wiring and code methods. Anyone able to do a guide on how to do this? I have my plant pot using water from my fish tank and I want to read the water temp with my smart pot.

    Could you upload the 3D covers template in .stl instead of .skp form?

    i wrote on Facebook if my teacher accept this project i'll start. thx for everything.

    My sensor readings don't make any sense,

    Temp: 1023
    Light: 877
    Water: 876

    I don't know what units any of these are in, I'd like to be able to see Temp in C. Anyone know what units these sensors are in?