Getting Started

A Guide by Humans, for Humans.

Tutorial - Arduino LED Blinks

Welcome!

After completing this tutorial, you will be familiar with the most important concepts needed to play with Artoo and Arduino. If you are new to this world, don't worry; this tutorial should cover all you need to make it work.

Requirements

Installing Arduino

Windows

Follow this guide to Setup Arduino on Windows

MacOS

Follow this guide to Setup Arduino on Mac OS X

Linux

Open a terminal and run the following command:

sudo apt-get install arduino

or

  1. Download Arduino IDE.
  2. Extract the downloaded package.

How to connect

First plug the Arduino into your computer via the USB/serial port. A dialog box will appear telling you that a new network interface has been detected. Click "Network Preferences...", and when it opens, simply click "Apply".

Install the artoo-arduino gem:

$ gem install artoo-arduino

Once plugged in, use the `gort scan serial` command to find out your connection info and serial port address:

$ gort scan serial

Use the `gort arduino install` command to install avrdude, this will allow us to upload firmata to the arduino:

$ gort arduino install

Once the avrdude uploader is installed we upload the firmata protocol to the arduino, use the arduino serial port address found when you ran `artoo connect scan -t serial`, or leave it blank to use the default address `/dev/ttyACM0`:

$ gort arduino upload firmata /dev/ttyACM0

Finally change code to the correct serial port

connection :arduino, adaptor: :firmata, port: '/dev/ttyACM0' # linux

Running the examples

If you installed the gem, you'll have to download the "Blink Led" example separately:

If you cloned the repository, you can access the example in the following folder: examples/blink_led.rb

Now, let's run the example:

$ ruby examples/firmata_blink_led.rb

The LED should be blinking in your arduino board.

Congratulations you have successfully completed this tutorial!