Instant Green Thumb #AdafruitIO #IoTuesday


From b_anz on

What it does:

The basics:

This device will water your plants for you. It was designed for outdoor use (balcony, terrace or any other place where the plants are not watered by rain) but will work indoors just as well.

The details:

  • The brains of the irrigation system is an Arduino Uno with sensors (see parts list)
  • At first it will measure the air temperature. If that is at least 5°C, the program will continue, otherwise it will stop, because it’s too cold for watering.
  • Then it will check if there’s enough water in the reservoir (e.g. a simple bucket) using an ultrasonic sensor. If there isn’t, the pump won’t switch on, because dry-running would damage it. If there is:
  • Next it will check if watering is even necessary using a soil moisture sensor. If watering isn’t required, nothing will happen obviously and the measuring cycle will repeat after a few minutes. If the soil is too dry:
  • The RF transmitter will switch on the remote control power socket for 10 seconds which will supply power to the pump, thus watering your plants.
  • The measuring cycle will repeat after a minute until soil moisture exceeds the given threshold value. This intermittent watering (10 seconds every minute) has proven to be better than continuous watering, because the water needs some time to sink down to the bottom of the planter, where the soil moisture sensor is positioned. With continuous watering, there would be already too much water in the planter before the sensor can detect it.
  • A timer switch between mains power and the device is recommended. A setting that provides power twice a day (mornings and evenings) will prevent watering around noon, which may cause damage to your plants and is a waste of water anyway.

Read more

AIO_Logo_150x150Here at Adafruit, we sell all of these amazing components, but we couldn’t find a good way to interact with them over the internet. There are certainly a lot of great services out there for datalogging, or communicating with your microcontroller over the web, but these services are either too complicated to get started, or they aren’t particularly fun to use. So, we decided to experiment with our own system, and that is how Adafruit IO got started.

To start, please visit, and take a look around. You can also visit our comprehensive tutorial located on the Adafruit Learning System.

To make it easy for people to get started using Arduino or ESP8266 we have starter packs with just about everything you may want to connect to the internet, with known-working WiFi modules!
ESP8266 Huzzah Kit
CC3000 Huzzah Kit

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.