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enginevib
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Aircraft Avionics Built in Ruby
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# Aircraft Avionics Built in Ruby [](https://travis-ci.org/eduardordm/enginevib)  [Watch a video of this gem running in real time in vxworks, IPad is used just as a terminal client](https://www.youtube.com/watch?v=QomYmohntKg) Foreword: This was built for a talk in RubyConf Brasil 2015, no changes will be made I guess. Displays the engine vibration levels as provided by a 0->10 sensor. Sensor must be calibrated. This program can be used with other sensors like: Speedometer, accelerometer and so forth. I personally tested it with a pitot system and it worked perfectly with sensors calibrated to work with Lyncoming O235 engines. It can run in a RTOS, **read rtos.c to know how you can hook this gem into your specific RTOS.** You might need to get rid of Rubygems depending on the OS you are planning to run this code. This gem was tested in OSX, PREEMPT_RT, Xenomai Linux and a proprietary OS it works as intended. Warning: While you may use this inside an aircraft for testing purposes I advise you not to unless you are an experienced instructor or test pilot or passenger. Read /exe/openmic to learn how you can use your mic port to act as an analog data input (it's terrible). ### Caveats * Strip down the gem if you plan to run this in VxWorks; * io.rb needs some love; * Tests are there but they are not enough; * Needs a somewhat fast computer, Linksys WRT54 can't run this. * YOU NEED TO IMPLEMENT RTOS.C TO COMPLY WITH YOUR RTOS REQUIREMENTS. ### Specs * Deadline: ~30ms + verification tolerance * Avg execution time: < 6ms * Uses main loop (ticker) * Expects fresh data at serial port (it will buffer for one tick if data gets out of sync) ## Installation Add this line to your application's Gemfile: ```ruby gem 'enginevib' ``` And then execute: $ bundle Or install it yourself as: $ gem install enginevib ## Usage $ bundle exec enginevib -p $SERIAL_PORT The -s option enables IO simulation. ## Using a microphone as input Check out /exe/openmic to learn how you can use socat and create a virtual serial port that reads data from your mic. ## DTrace Outputs dtrace to log.txt: $ sudo dtrace -s ./dtrace/script.d -o ./tmp/log.txt -c "`rbenv which ruby` `pwd`/bin/enginevib -p /dev/ttys007" ## Development This was built for a talk in RubyConf Brasil 2015, no changes will be made. ## License The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
