Hackin' Devices with Ruby
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Showing a model for sensor integration (called Pachube.com), based on every-day of-the-shelf (and cheap) devices, integrating through a simple interface language (DSL) based on Ruby.
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Hackin' Devices with Ruby
- 1. Hackin' Devices with Ruby A Sensors to API to Feeds to Apps ¡°Show and Tell¡± Kit Plummer dozer software
- 2. Ubiquitous Computing Pervasive Computing Everything has a processor
- 3. Everything is connected Ambient Intelligence Sensitive to people
- 6. Devices -> Producers/Consumers Internet of Things
- 7. Producers Push To Where? Consumers Pull From Where? Consumers get pushed to is probably more right
- 8. Devices -> Sensors/Actuators Sensors Push
- 9. Actuators Pull? In a Web world, Yes.
- 10. In a Web world, No.
- 11. Full-duplex is possible Chat protocols (XMPP)
- 12. Webhooks
- 13. Devices ARE servers
- 14. What if... There was a SaaS that could receive data updates and make them available to the public through a standardize API, producing XML, JSON, or graphic visualizations (or PLI)
- 15. There was a SaaS that could provide a standard interface to publicly available sensors and actuators (from all over the world), via a standardized format and open API
- 17. Need Hardware! Sensor Check: Vernier Go!Temp USB Temp Sensor Embedded Platform Check: Gumstix Verdex <?xml version="1.0" encoding="iso-8859-1"?> <xsd:schema xmlns="http://www.eeml.org/xsd/005" elementFormDefault="qualified" targetNamespace="http://www.eeml.org/xsd/005" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:element name="eeml"> ...
- 18. Need Software! I <3 Ruby! Got Ruby 1.8.6 running on Gumstix ruby 1.8.6 (2008-08-11 patchlevel 287) [arm-linux-eabi] Pachube speaks EEML* over HTTP Wrote pachuber gem for Ruby access to API Access temp from Go!Temp via Ruby in Linux Thanks to Linux's USB ¡°device bus¡±: (*Extended Environments Markup Language) f = File.new("/dev/ldusb0") packet = f.read(8) f.close parsed_packet = packet.unpack('ccsss') temp = parsed_packet[2]/128
- 19. Posting to Pachube pachube_api_key = 'blahdyblahblah' LAT = 32.358098 LON = -110.980960 NAME = "Dozer Software" ELEVATION = 2545 temp = Temperature.temp() # Build the EEML XML env = EEML::Environment.new env.location = EEML::Location.new(:physical, :disposition => :fixed, :exposure => :outdoor, :ele => ELEVATION, :lat => LAT, :lon => LON, :name => NAME) data = EEML::Data.new(temp) data.tags << "temperature" data.unit = EEML::Unit.new("Celsius", :symbol => 'C', :type => :derivedSI) env << data # Create a connection to Pachube and update the feed pach = Pachube.new(pachube_api_key) resp = pach.update("/4077.xml", env.to_eeml)
- 20. ?
- 21. Got GPS? GPSBabel ( http://www.gpsbabel.org/ ) Can pull GPS info from USB-device $ gpsbabel -i garmin,get_posn -f usb: -o garmin_poi -F - class Location attr_accessor :lat, :lng def initialize() get_coordinates end def get_coordinates begin coordinates = {} # gpsbabel will return CSV coordinates "lng, lat, string, string" data = ` gpsbabel -i garmin,get_posn -f usb: -o garmin_poi -F - ` data = data.chop.split(',') self.lng = data[0].to_s self.lat = data[1].to_s rescue self.lat = "0" self.lng = "0" end end # get_coordinates end
- 24. Servos
- 25. Controls phidgets4r Ruby wrapper for C lib
- 26. Need help with more devices!
- 27. Driving a Servo... assert_nothing_raised { servo = Phidgets::Servo.new(-1, 2000) puts "device_id: #{servo.getDeviceID}" puts "device_name: #{servo.getDeviceName}" puts "status: #{servo.getDeviceStatus}" max = servo.getPositionMax(0) min = servo.getPositionMin(0) puts "min: #{min} - max: #{max}" servo.setPosition(0, 10.0) sleep 3 position = servo.getPosition(0) servo.close servo.delete }
- 28. Serve it Up! Sinatra: DSL for simple webapps
- 29. Live coding disaster to commence now...
- 30. Bug Labs BUG Modular Blocks for Base Processor Brick Hardware and software modularity Demo And Ruby ? Why Yes Please.