Scripting Things - Creating the Internet of Things with Perl
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The document discusses the Internet of Things (IoT) and its integration with Perl programming at the Pittsburgh Perl Workshop 2011. It highlights the importance of sensors and controllers in building IoT applications, emphasizing practical examples such as temperature and humidity monitoring, as well as digital and analog input/output mechanisms. The document encourages innovation by starting projects small, leveraging existing technologies, and suggests various project ideas while providing resources for further exploration.
![Q&A Hans Scharler [email_address] www.ioBridge.com](https://image.slidesharecdn.com/scriptingthings-111010211741-phpapp02/85/Scripting-Things-Creating-the-Internet-of-Things-with-Perl-37-320.jpg)
Scripting Things - Creating the Internet of Things with Perl
- 1. Scripting Things Pittsburgh Perl Workshop 2011 Carnegie Mellon University Hans Scharler www.ioBridge.com @scharler
- 2. Objectives Introduce the “Internet of Things” Learn how to Innovate Answer: Why Perl? Interface the Real-world Learn how to start a project Plant some ideas Answer Questions
- 3. The Internet of Things Sensors Controllers People Buildings Connectivity Applications Source: The Things People Things
- 4. The Internet of Things Is server monitoring too boring for the Internet of Things? NO… Write a simple script to monitor CPU and RAM utilization and push that data out to a web service to measure server uptime and performance IoT is only going to work in small steps. It starts with remote server monitoring and ends with SkyNet.
- 6. Innovation Example Temperature Sensing Temperature Sensing Humidity Sensing Humidity Sensing + Twitter Tweeting Humidor
- 8. The Benefits of Perl Parsing String Operations REGEX Native Serial Hardware Abstraction Connecting APIs CPAN
- 9. The Opportunity “ Imagine if we attach Perl to the emerging Internet of Things” --Hans Scharler “ Industry Leading Expert” Source: Hans Scharler
- 10. Perl’s Keys to Success Examples written in Perl CPAN module for Arduino® / ioBridge® Projects that use Perl to connect things
- 11. Interface to the Real World Digital I/O Analog Serial (via) Network Protocols
- 12. Digital I/O Digital = Discrete States (On/Off) I = Input O = Output Use Digital I/O to check if something is On / Off (input) or to turn something On / Off (output)
- 13. Digital Output Device generates some voltage to represent the “On” state – typically 5v Device generates some voltage to represent the “Off” state – typically 0v
- 14. Digital Output If something that you are hacking has a button or switch, you can just replace it with a Digital Output / Relay to operate that device (most of the time) “ 1100110001101” (bark)
- 15. Digital Input Read in voltage that represents the “On” state – typically 5v Read in voltage that represents the “Off” state – typically 0v
- 16. Digital Input Use Digital Inputs to see if something is opened / closed, up / down, or on / off Down Open On
- 17. Analog Input Varying voltages – typically from 0 to 5v Higher voltages indicate more of something Lower voltages indicate less of something Used for sensors Source: physicscentral.com
- 18. Analog Input: Temperature Source: physicscentral.com Voltage Time ->
- 19. Analog Input for Sensors Examples of Analog Input: Temperature Humidity Pressure Light Levels Distance / Range Volume Source: physicscentral.com
- 20. Serial Serial is a way of passing data one piece at a time between devices A little more complicated, but Serial has universal concepts: Databits – typically 8 Baud Rate / Speed – typically 9,600 or 19,200 Parity – typically “none” Stop Bits – typically 1
- 21. Serial Even more Serial Concepts… RS-232 Short distance communication Higher voltages – old serial ports on computers and modems UART Short distance commutations 0 to 5v Used with microcontrollers such as Arduino® RS-485 Long distance serial Used more by industrial control systems
- 22. Serial-over-USB Converts USB to UART Serial
- 23. Device::SerialPort ls -la /dev/tty* use Device::SerialPort; my $port = Device::SerialPort->new("/dev/tty.usbserial"); $port->baudrate(19200); $port->databits(8); $port->parity("none"); $port->stopbits(1); Find your serial device: Perl Setup: Settings must match on both sides
- 24. Device::SerialPort my $char = $port->lookfor(); print “$char \n”; $port->write(“Hello World"); Read Serial Data: Send Serial Data: See Also: Win32::SerialPort Firmata for Arduino: http://firmata.org/wiki/Download https://github.com/amimoto/perl-firmata
- 25. Network Protocols Abstraction of physical interface over network protocols Serial-over-Ethernet HTTP GET to get data from a Digital or Analog Input HTTP POST / PUT to control a Digital Output API to Device - “ioBridge”
- 26. Serial over Network Serial Serial Ethernet Ethernet Now you can go a long distance over UART serial
- 27. “ ioBridge” ioBridge IO-204 Ethernet Module Relay Thermostat Temperature Sensor HTTP POST “ turn on thermostat” HTTP GET “ temperature”
- 28. How to Start Start small Duplicate someone else's well documented project (check Instructables.com or Google) Break every project down to a list of basic concepts (Digital I/O, Analog, Serial, Network Protocols) Transform the basic design (make a change) Combine the design with other ideas (add Twitter) Finish big
- 29. What We Do Projects!
- 30. Internet Pet Feeders 2008 2009 2010
- 32. Platform Technologies Optimized TCP/IP Stack Portable Client Real-time Streaming, Web Sockets, Comet Application Design Platform API Abstraction Visualizations
- 34. Control Heating/Cooling Based on Current Position and Weather Track Your Location With Google Latitude
- 35. iPhone Controlled Beer Cannon Mini Fridge Beer Cannon by Ryan Rusnak Over 1 million YouTube Views Demo’d Live on TV In the June 2011 issue of Popular Science Featured on JUNKies -- TV Show on Discovery Science
- 36. Learn more… My blog - http://iamshadowlord.com “ Thermd” Perl Module - http://www.klein.com/thermd Arduino - http://www.arduino.cc ioBridge – http://www.iobridge.com Instructables – http://www.instructables.com
- 37. Q&A Hans Scharler [email_address] www.ioBridge.com