The new MKR family of Arduino boards are going to change the landscape of rapid prototyping IoT solutions. The Arduino MKR GSM 1400 is a great solution for anyone looking to expand the scope of their IoT projects using cellular connectivity. By integrating a modem with a microcontroller a new all-in-one communication solution has started to emerge. This paired with the Twilio Programmable Wireless SIM makes it possible to communicate around the globe using Machine-to-Machine commands. “Things” can now be connected in ways previously impossible with WiFi or Bluetooth.
This tutorial demonstrates how to send a Machine-to-Machine Command from the Arduino MKR GSM 1400 to a server written in Go. When the Machine-to-Machine Command is received server-side an audio file will play a .mp3 saying “hello”. If you want to jump ahead the completed project can be found on the TwilioIoT GitHub.
What is the Arduino MKR GSM 1400? …
Following your passion and hard work are things I observed being around family when I was young. My grandfather passed away early in my life but his memory was always visible to me through the pictures hanging on the walls in my grandmother’s house.
One wall had an image of a worn leather boot and him climbing a telephone pole next to it. He, along with other family members, were responsible for putting up telephone lines across the northern part of Massachusetts for Bell Telephone.
Growing up in this environment I was always taught to problem-solve and was encouraged to seek solutions by observing the problem through the eyes of others. From the beginning I was equipped with curiosity and inspired to use it every day.
There were two principles I was told that make the world work: asking "why?" and communication.
As a kid I never …
Communication between the worlds of humans and machines doesn’t need to be apocalyptically hard or prohibitively expensive. In this project, we are going to build a voice call operated garage door opener with an ESP8266 dev board and a relay. In order to stitch all the parts together, we will use our visual workflow builder Studio and Sync for IoT.
Gather the Garage Door Hardware
Our final flow will use an ESP8266 to link your garage door to a communications flow via Sync for IoT. Here’s what you’ll need:
- One …
The Internet of Things certainly has potential – and for some applications it’s even currently performing. Smart farming is one of those fields (pun intended), where always-connected sensors can do better at crop monitoring than any human ever could. Watching moisture levels and other soil metrics is a perfect assignment for low-powered microcontrollers scattered throughout amber waves of grain.
Building a Smart Farm with Arduino, Twilio and Helium
Here in the Bay Area, lot sizes are measured in square footage not acreage – so excuse my diversion into hyperbole. At my house, I have a couple of 3’x6.5’ planter boxes where we grow herbs and root vegetables. Today, we’ll wire up a planter box …
If you’re anything like me, you’ve got an entire desk drawer full of hardware dev boards and sensors waiting patiently for a project. (Okay, fine, a garage storage rack.)
That’s why I was so excited when we announced we’re bringing Twilio’s Sync to IoT devices. Sync is Twilio’s real-time state synchronization product, allowing you to persist, update, and check variable state from anywhere the internet is found. We added MQTT over TLS support to Sync, opening up Sync’s super-scalable architecture to many of those aforementioned drawer hardware devices.
If you can’t tell, I’m over the moon at this development. Follow along with this blog post; we’re going to use an Espressif ESP8266 Dev Board, Sync for IoT, the Arduino IDE and billions of electrons to blink an LED from the command line.
Sync-ing Our Capabilities
Sync for IoT is currently in Developer Preview, so you’ll first …
At SIGNAL we launched Twilio Programmable Wireless which allows you to add cellular data to your IoT projects using a Twilio SIM card. The LinkIt ONE dev board in the SIGNAL hackpack is a perfect place to try out these new capabilities. In the next 5 minutes you’ll learn how to use the cellular functionality of this device using your Twilio SIM card.
What You’ll Need
Before we get to hacking there are a few things we need to get set up. First, we need to set up the LinkIt ONE board and make sure it is programmable using the Arduino IDE and the MediaTek LinkIt ONE SDK. The steps for getting this set up are outlined in this blog post. Once you’ve completed those steps you’ll want to also make sure to attach the cellular antenna if you haven’t already because it is needed for Twilio Programmable Wireless. …
Arduino is an amazing platform for building interactive hardware projects. In the next ten minutes we’ll get our first program running on the SeeedStudio LinkIt ONE development board.
If you’re coming to SIGNAL (you are coming to SIGNAL right? – use promo code BSCHOOLEY20 for 20% off your ticket) you’ll be receiving a LinkIt ONE in the Hackpack we’re giving to every attendee. Stop by the Hackpack station and we’ll help you get it up and running.
What is the LinkIT ONE?
The LinkIt ONE is a development board that is made by the collaboration of SeeedStudio and MediaTek. It features an ARM7 EJ-S™ processor on a board that is pin-out compatible with Arduino. Onboard you’ll find support for:
I found myself trapped in what seemed like a terrible dream. Visions of ghosts and bats blinking at me in the darkness were revealing what looked to be a foreign language. As I peered closer I caught a glimpse of what looked to be dollar signs and weird arrow shapes. Could it be? Yes, it was in fact my worst nightmare: having to work with a programming language I haven’t worked with in a long, long time. It was clear I was going to have to face this fear head on if I was ever going to escape…
Halloween has always been a fun holiday for me. People dress up in crazy costumes, everyone makes excuses for eating candy and every now and then you might just have to face your fears. It’s also a great time to hack on spooky projects that involve LEDs. My favorite gear …
I hate voicemail. That’s why I text my friends. Sorry, I should elaborate. I mean I text a Twilio number that interfaces with Arduino to translate my text message into morse code which is then tapped out by an old telegraph.
Is my means of communication uncommon? Yes.
Is it pretty rad? Yes.
Am I abusing sarcastic rhetorical questions? Most definitely.
Noam Zomerfeld, a design student at California College of the Arts, wanted to unpack how basic communication systems work. Instead of diving into communications apps and stacks, he went old school. He decided to build a rudimentary telegraph with just a piece of wood, batteries and wire. From there, brought the old school hardware (telegraphs still count as hardware) to the new school of APIs and Arduino interfaces.
Here’s how Noam’s telegraph works. Any passerby can text Noam’s Twilio number. The text string is parsed by an Arduino in …