Build Instructions

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• 1

  Step 1

  Getting Started

  Hardware

  I've decided to use the Arduino MKR1000 as the hardware platform for this project, for a few reasons...

  • Similarly sized form factor to dash button.

  • 100% Arduino IDE compatible.

  • Utilizes the Atmel ATWINC1500 WiFi Module(TLS capable w/ onboard SHA-256 encryption).

  • ARM SAMD21 Cortex-M0 (256KB of Flash : ) ).

  • LiPo Battery JST plug for portability.

  That being said this library should work well with any ATWINC1500 WiFi enabled Arduino that uses the WiFi 101 library. Other options could include an Arduino Zero or Due sporting the WiFi101 shield, an Adafruit MO WiFi Feather, or really any Arduino with sufficient space, and Atmel's ATWINC1500 WiFi module.

  Here's what you'll need...

  Arduino MKR1000 w/ header pins, push button,

  female-male jumpers, resistor LiPo battery, breadboard

  The battery is of course optional and the resistor can be of any value really. We're just using it to pull down one of the push button pins to ground. The small push button will have 4 pins that are organized into two pairs. You'll want to bridge the gap in the breadboard by placing the button so that the longer gap between pins is utilized to span the space between the two sides of the breadboard.
  

• 2

  Step 2

  Time to wire up the breadboard like so...

  Fritzing Breadboard View

  Any digital I/O pin will do for the pushbutton. Just remember to set

  const int dashButton = 14;     //DIO number of the pushbutton pin 

  to whichever pin you end up choosing. I've used jumper cables and a smaller breadboard so my final configuration looks like this...
  

  Breadboard Arduino Dash Button

  If you feel like making this a bit more portable you can grab a prototype board, and a header plug to create a sort of push button shield for the MKR1000.

  Dash Button Shield

  
  

• 3

  Step 3

  Software

  The initial setup procedure and configuration does involve a good amount of steps but once you are set up and configured the development process becomes that much easier. I've written a full fledged getting started guide in the readme/wiki pages located at the AmazonDRS GitHub repo which I'll paraphrase in this section. If you haven't set up "Login with Amazon", AWS SNS, your dash device, or stepped through the authCodeGrant example sketch head over to the repo wiki and follow along. By the time you come back you should have...

  • Imported the AmazonDRS library into your Arduino IDE, as well as the Arduino Wifi101 and ArduinoJson libraries.

  • Created your LWA Security Profile, created a Dash Replenishment Device, and your Amazon Web Services Simple Notification Service configuration.

  • Completed the LWA Authorization Code Grant process and exchanged your auth_code for your refresh token by running the authCodeGrant example sketch.

  • Updated the AmazonTokens.h header file in your AmazonDRS library 'src' directory with values for...client id, client secret, refresh token, and redirect uri.

  If you've made it this far you're ready to test your new Arduino dash button! Let's take a look at the sketch in detail.

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