Multirotors
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The document discusses multirotor drones and their components. It explains that multirotors come in many configurations including tricopters, quadcopters, hexacopters and octocopters. Common components include propellers, brushless motors, electronic speed controllers (ESCs), flight controllers, battery eliminator circuits (BECs), radios, and lithium polymer batteries. The document provides an overview of these parts and recommends some starter models and online hobby sites for building and flying multirotors.
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Setting up a quadcopter with PX4 1.x or Pixhawk (PX4 2.4.x) autopilot using open source flight control software.Making of Drone
Making of Dronemohanchandrakanth swarna
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This document provides details on the design and development of an autonomous quadcopter. It begins with an introduction to quadcopters and their potential uses. The document then outlines the goals of the project, which are to build, modify and improve an existing quadcopter kit to enable stable flight, GPS data gathering/storage, and auto-landing. Several chapters then describe the individual components, circuit connections, setup of the onboard flight controller, calibration processes, and flight testing procedures. Figures and diagrams are provided to illustrate key aspects. The conclusion discusses the future potential for drone technology.Travis Goodspeed - Not Quite ZigBee
Travis Goodspeed - Not Quite ZigBeeSource Conference
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The document discusses analyzing and exploiting unknown radio protocols. It begins by outlining the methodology, which includes dissecting devices to identify chipsets, determining modulation schemes and frequencies, and building custom transceivers. Examples are provided of exploiting protocols from remote controls, fitness trackers, and keyboards. Specific chips like the Nordic nRF24L01 and techniques like sniffing without promiscuous mode support are examined. The document concludes by demonstrating how to sniff Microsoft keyboard traffic using the GoodFET device and custom firmware.Frankencar - Agile is Not Just for Software
Frankencar - Agile is Not Just for SoftwareMatt Spradley
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Using agile techniques to build an outlaw pinewood derby car from scratch, no wimpy kits involved. The result is Frankencar! A 400 watt brushless motor powered, Arduino controlled torque monster that smokes the competition. Learn aspects of Agile that apply outside of software development. Uncover universal truths that will improve any project. Find other uses for a Dremel tool. But mostly, discover how you can apply your geekitude to something beyond software, even if youve never touched a soldering iron, and have a lot of fun doing it.Multipilot pres-ufficiale def
Multipilot pres-ufficiale defRoberto Navoni
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- The document describes the Multipilot 32, a flight controller board developed by LASER NAVIGATION.
- It has an ARM Cortex-M3 processor, 512KB flash memory, 64KB RAM, and interfaces for sensors, radios, motors and more.
- The board runs ChibiOS or VROS and supports projects like OpenPilot, AutoPilot and Paparazzi. It is compatible with many sensors, radios and brushless ESC/servos.
- Developers can use IDEs like CooCox, Eclipse, or commercial options, with libraries for sensor control, radio control and more.
- The Multipilot 32 is available for pre-More from Stoyan Zhekov (18)
ZeroMQ
ZeroMQStoyan Zhekov
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?MQ (ZeroMQ) provides a simple way to connect different codes across various transports like in-process, inter-process, TCP, and multicast. It uses a socket interface that supports common messaging patterns like request-reply, publish-subscribe, and task distribution. These sockets can be connected in a flexible topology to build scalable, concurrent applications that take advantage of multicore systems. ?MQ has language bindings for many languages and runs on most operating systems.Padrino - the Godfather of Sinatra
Padrino - the Godfather of SinatraStoyan Zhekov
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This document discusses various web frameworks and tools including Sinatra, Padrino, CoffeeScript, Sass, and Sprockets. It summarizes Padrino as a modular web framework built on Sinatra that aims to provide more features out of the box compared to Sinatra. Padrino includes generators to create projects, controllers, models and other components. It supports features like modular design, multiple apps, helpers for tags/assets/links, an optional mailer, and a development-friendly environment. The document presents Padrino as a fully-featured alternative to building applications with just Sinatra.Sequel
SequelStoyan Zhekov
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Sequel is a Ruby ORM and database toolkit that provides an ActiveRecord-like interface for working with databases. It supports SQLite, MySQL, PostgreSQL, and other databases. With Sequel, you can connect to databases, run SQL queries to retrieve and manipulate data, define models, and establish associations between models. Queries can be chained and return dataset objects. Sequel offers features like validations, hooks, migrations, and transactions for managing models and data.Deployment on Heroku
Deployment on HerokuStoyan Zhekov
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This document discusses deploying a Ruby on Rails application to Heroku. It covers the key steps of deployment including packaging the application with Bundler, using Git for updates, and scaling the application on Heroku dynos. Local deployment is discussed first for development using Pow and Foreman for scaling locally. Remote deployment on Heroku is then covered, highlighting how Heroku provides easy deployment to their PaaS with automatic scaling based on usage.Push the web with HTML5
Push the web with HTML5Stoyan Zhekov
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This document discusses new technologies for real-time communication on the web, including server-sent events, websockets, and eventsource. It provides an overview of these technologies, describing their capabilities, such as bi-directional communication, and how they address limitations of older methods like polling. Examples of code for implementing these technologies are also included.Foreman - Process manager for applications with multiple components
Foreman - Process manager for applications with multiple componentsStoyan Zhekov
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Splitting an app up in different processes is great for performance and scalability. The downside, however, is that it becomes much more complicated to get the app and all of its parts running.
Foreman is an attempt to make this easier. Using foreman you can declare the various processes that are needed to run your application using a Procfile.Social Network for spare parts
Social Network for spare partsStoyan Zhekov
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A short presentation for Startup Weekend event in Kyoto. My idea was to create a social network (group of interested people) for exchanging spare parts information. Features: PubSub - subscribe once and get real-time notifications when something, you are searching for is available.Using XMPP Presence stanzas for real-time parking information
Using XMPP Presence stanzas for real-time parking informationStoyan Zhekov
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A short presentation for Startup Weekend event in Kyoto. I had an idea to track available parking spaces via XMPP Presence stanzas.Ruby cooking
Ruby cookingStoyan Zhekov
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Chef is an open source systems integration framework built to bring the benefits of configuration management to your entire infrastructure.Websockets with ruby
Websockets with rubyStoyan Zhekov
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The document discusses websockets and how they enable real-time, bidirectional communication between browsers and servers over a single TCP connection. It provides an overview of current HTTP limitations, introduces websockets as an improvement, and discusses browser support, implementations in Ruby, security considerations, and potential uses like chat, games, and real-time notifications.EventMachine
EventMachineStoyan Zhekov
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EventMachine is a library for Ruby, C++, and Java programs. It provides event-driven I/O using the Reactor pattern.Webhooks - glue for the web (japanese)
Webhooks - glue for the web (japanese)Stoyan Zhekov
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34 Ruby/Rails㏊v.
Credits: some of the images inside are from the Jeff Lindsay's presentations "Web Hooks and the Programmable World of Tomorrow" and "Using Web Hooks" (see the presenter notes below the slides)Webhooks - glue for the web
Webhooks - glue for the webStoyan Zhekov
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Presentation for the 34th Ruby-Kansai meeting. Credits: some of the images inside are from the Jeff Lindsay's presentations "Web Hooks and the Programmable World of Tomorrow" and "Using Web Hooks" (see the presenter notes below the slides)
Microblogging via XMPP
Microblogging via XMPPStoyan Zhekov
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The document discusses microblogging using the XMPP protocol. It provides background on XMPP, describes how it can enable microblogging in near real-time, and outlines the speaker's microblogging application built with Ruby that uses an XMPP bot, EventMachine for concurrency, Sequel as an ORM, and Ramaze as a web framework. Key features of the application include models for users, micros, and relations between them, an API for accessing data, and a plugin architecture for the XMPP bot.Ruby off Rails (english)
Ruby off Rails (english)Stoyan Zhekov
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The document discusses Ruby on Rails and alternatives for building web applications in Ruby. It covers concepts like coupling and cohesion in software design. It then introduces Rack, an interface between web servers and Ruby frameworks, and how it helped connect different Ruby frameworks like Sinatra, Merb, and Ramaze. It provides examples of using Rack with the Sequel ORM and Thin web server to build simple web applications in Ruby.Ruby off Rails (japanese)
Ruby off Rails (japanese)Stoyan Zhekov
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This document discusses Ruby on Rails and web application architecture. It introduces concepts like coupling and cohesion, different ORM tools including Sequel, and how Rack provides a standard interface for web frameworks. Rack allows different frameworks like Sinatra, Merb and Rails to integrate together and be deployed on common web servers using different protocols. The document also discusses how to build scalable Rack applications.Rails Deployment with NginX
Rails Deployment with NginXStoyan Zhekov
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This document provides an overview of deploying Rails applications with NginX. It discusses using Mongrel as a web server for Rails and how NginX can be used as a reverse proxy for load balancing across Mongrel instances. The document also covers NginX configuration options and optimizations for serving static files, caching, and balancing requests across backends.Recently uploaded (14)
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Multirotors
- 1. Multirotors by Stoyan Zhekov 1
- 2. Drones? 2
- 3. SkyNet? 3
- 4. Ethernet of things (EOT)? 4
- 5. How it starts? 5
- 6. GY-521 6
- 7. 3 AXIS ! 7
- 8. 3 axis = Flying ! 8
- 9. Lets dream! 9
- 10. Parrot AR.Drone 10
- 11. Apple Store! 11
- 12. Keep it real! 12
- 13. Product vs Platform 13
- 14. Platform ? Cheap, Available ? Easy maintain - parts, cheap and available ? Easy changes ? Scalable ? Community 14
- 15. FPV vs Acro 15
- 16. A bit of theory Aerodynamics 16
- 17. Lifting! 17
- 18. Torque (momentum) ? 18
- 19. Torque! 19
- 20. 20
- 21. Helicopters single rotor 21
- 22. Helicopter ?! 22
- 23. MULTIrotors 23
- 24. Tricopter 24
- 25. Quadcopter 25
- 26. Hexacopter 26
- 27. Octocopter 27
- 28. This is madness!! 28
- 29. Common parts 29
- 30. Propellers CW vs CCW 30
- 31. LiPo Lithium Polymer battery 31
- 32. Brushless motors 32
- 33. ESC Electronic speed control 33
- 34. Flight Controller Axis, Sensors, DOF 34
- 35. Flight Controller ? 3 axis - gyro only ? 6 axis - gyro + accelerometers ? 10 DOF - 3 x gyro, 3 x acc, 3 x compas, baro 35
- 36. Flight Controller 36
- 38. MultiWii 38
- 39. Radio Transmitter (Tx) / Receiver (Rx) 39
- 40. Radio ? Freq - 2.4Ghz ? Protocols - FlySky, DSMX (Sp), DEVO (Wk) ? Channels - > 4 ? Modes - Mode 2 ? RTF , BNF 40
- 41. Turnigy 9XR 41
- 42. Turnigy 9XR 42
- 43. er9x 43
- 44. Size matters! Small is good?! 44
- 45. 45
- 46. 46
- 47. 47
- 48. 48
- 49. Useful Sites ? http://www.banggood.com/ ? http://www.aliexpress.com/ ? http://www.hobbyking.com/ ? http://www.rcgroups.com/ 49
- 50. kick start - SYMA X1 50
- 51. kick start (2) - V9x9 51
- 52. 52
- 53. Lets ?y! 53