Linda Arduino Sensor

report Arduino's sensor values with RocketIO::Linda

• https://github.com/shokai/linda-arduino-sensor
• write tuple ["sensor", "light", 120] and ["sensor", "temperature", 25] every second.

Dependencies

• Arduino Firmata
• Ruby 1.8.7 ~ 2.0.0
• EventMachine
• LindaBase

Install Dependencies

Install Rubygems

% gem install bundler foreman
% bundle install

Setup Arduino

Install Arduino Firmata v2.2

Arduino IDE -> [File] -> [Examples] -> [Firmata] -> [StandardFirmata]

sensors

• light
  • analog input 0
  • CdS and 330Ω
• temperature
  • analog input 1
  • LM35DZ

Run

set ENV var "LINDA_BASE" and "LINDA_SPACE"

% export LINDA_BASE=http://linda.example.com
% export LINDA_SPACE=test
% bundle exec ruby linda-arduino-sensor.rb

oneline

% LINDA_BASE=http://linda.example.com LINDA_SPACE=test  bundle exec ruby linda-arduino-sensor.rb

Install as Service

for launchd (Mac OSX)

% sudo foreman export launchd /Library/LaunchDaemons/ --app linda-arduino -u `whoami`
% sudo launchctl load -w /Library/LaunchDaemons/linda-arduino-arduino-1.plist

for upstart (Ubuntu)

% sudo foreman export upstart /etc/init/ --app linda-arduino -d `pwd` -u `whoami`
% sudo service linda-arduino start