Getting iPhone push notifications from objects in your physical world is possible using an Arduino with an Ethernet Shield, a PHP-enabled web server and an iPhone app called Prowl. In this video, I show how to set up a mailbox so that it pings your phone when snail mail is delivered, but it’s very easy to adapt this project to whatever suits your needs.
Prowl is an iPhone app with the sole purpose of delivering push notifications to you from your computer via Growl or from online services with the API. In order to connect the Arduino to Prowl’s API, we need a PHP proxy server. This is because Prowl’s API requires an SSL connection, which the Arduino isn’t capable of making. Luckily, setting up the server is easy because all of the hard work has already been done by the fine people behind the ProwlPHP class. All you need to do is paste your Prowl API key into the example code and change the example text to the alert that you want to send. When your Arduino requests the URL of that example script from your web server, the alert is pushed to your phone almost instantaneously.
For the code on the Arduino, I simply adapted the WebClient example that’s included with the Arduino IDE. I changed the server address, the URL, and the basic structure of the code so that it requested our ProwlPHP script’s URL when it sensed a “high” signal from the switch. I also added serial output for debugging. You can check out the code I used for this project on Google Code or just download the Zip file.
There are a lot of great uses for this project. You could have push alerts delivered to your iPhone when you leave your garage door open, when someone opens your front gate, when the temperature drops below freezing, or when your home power usage exceeds a certain level. Whatever kind of switch or sensor you can hook up to your microprocessor can trigger a push alert. I’m eager to see how you decide to implement iPhone push alerts into your projects.
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 code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Maker Business — The sustainability of open source software
Wearables — The final environment
Electronics — Voltage drop from cables
Biohacking — Three DIY Photobioreactor Designs for Algae Growing
Python for Microcontrollers — Python snakes its way to Codecademy, beta 7, games, calculators, turning 6 and more! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF @Adafruit
Sorry, the comment form is closed at this time.