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Speech Recognition using the Raspberry Pi

Speech Recognition using the Raspberry Pi
I've finally received my Raspberry Pi, and I've immediately gotten to work transferring the speech recognition system I used for the robotic arm to the pi. Due to its small size and low power requirements, the Raspberry Pi is an excellent platform for the Julius open-source speech recognition system. This opens up almost limitless possibilities for voice command applications. EDIT: I am no longer working on Julius/HTK for speech recognition. There do exist commercial offerings of electronic voice command modules, as well as voice command applications appearing in recent smartphones (i.e. In this tutorial, I will be demonstrating how to use the Raspberry Pi for a simple speech recognition system to control the Maplin USB Robotic Arm. Requirements: Raspberry Pi set up and running debian (please follow setup instructions from and preferably connected to the internetUSB microphone Since we are not using the GPU very much, we'll allocate less RAM for video memory. Software

Welcome 6 Android Apps Every Raspberry Pi Owner Should Use Ever found yourself plugging a keyboard into your Raspberry Pi because you could be bothered to boot your PC to SSH, or found yourself desperately trying to remember the tiny computer’s IP address on your network? There are a whole host of Android utilities that can be used by Raspberry Pi owners to make life easier, including a couple that are custom designed. We’ve collected six of them together, all of which are free to install to Android phones and tablets. AndFTP It’s not often necessary to move files to your Raspberry Pi, but if this is something you require, AndFTP is a free app with a paid upgrade supporting FTP, FTPS, SCP, and SFTP. Best of all, AndFTP isn’t limited to file transfer with your Raspberry Pi — you can use it to FTP to any supported device, whether that is your Pi or a web server. Of course, if your Pi is your web server, then AndFTP should definitely be installed on your Android device! RPiREF Fing ConnectBot Hacker’s Keyboard AndroidVNC What Do You Use? Let us know below!

16x32 RGB LED matrix panel ID: 420 - $79.95 : Adafruit Industries Bring a little bit of Times Square into your home with this 16 x 32 RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them on the sides of busses and bus stops, to display animations or short video clips. We thought they looked really cool so we picked up a few boxes of them from a factory. They have 512 bright RGB LEDs arranged in a 16x32 grid on the front. On the back there is a PCB with two IDC connectors (one input, one output: in theory you can chain these together) and 12 16-bit latches that allow you to drive the display with a 1:8 scan rate. These displays are 'chainable' - connect one output to the next input - but our Arduino example code does not support this (yet). These panels require 12 digital pins (6 bit data, 6 bit control) and a good 5V supply, up to 2A per panel. Keep in mind that these displays are designed to be driven by FPGAs or other high speed processors: they do not have built in PWM control of any kind.

Bionic Arduino – Introduction to Microcontrollers with Arduino Bionic Arduino is a set of four 3-hour classes in November 2007 hosted by Machine Project and taught by Tod E. Kurt. It is an introduction to microcontroller programming and interfacing with the real world using the Arduino physical computing platform. It focuses on building new physical senses and making motion with the building blocks of robotics, using Arduino as a platform. In the class, participants are shown and experiment with the Arduino’s capabilities and learn the basics of common microcontroller interfacing, such as: digital output to control lights and LEDs, digital input to read switches and buttons, analog output to control motor position or LED brightness, and analog input to read sensor inputs. The class assumes no previous electronics knowledge, though it does assume a little programming knowledge. Class description at Machine Project Class Notes Arduino Sketches Used in Class Processing Sketches Used in Class Parts Suppliers, New Parts Suppliers, Surplus

This is Wiring (and Arduino) The Wiring i/o board is a small, cheap standalone computer with many connection capabilities. It can be easily programmed in a variant of the Processing language, with a similar programming environment. The board can control all kinds of sensors and actuators. Sensors allow the board to acquire information from the surrounding environment (temperature sensors, light sensors, distance sensors, etc). Wiring is an open project initiated by Hernando Barragán (University of Los Andes, Architecture and Design School). Arduino was inpired by Wiring and is basically the same thing. One great thing about these i/o boards are the available libraries. This lecture introduces the Wiring and Arduino i/o boards to Media Technology students through simple examples that demonstrate how to connect and program the board. References to other websites and material are placed at the bottom of this page.

arduino meets processing - PUSHBUTTON The Arduino meets Processing project intends to make it as easy as possible for anyone to explore the world of physical computing. All you need is an Arduino board as well as the Arduino and Processing software, which you can download on their project websites. On this website we explain how to: set up electronic circuits with various kinds of sensors, control and measure the sensors with the Arduino board, send the data to the computer, and use the received values to generate computer graphics with Processing. For all examples you need some basic electronic equipment such as a breadboard , resistors, the sensors, and some wires. The following sensors are dealt with on this website: Digital Sensors Pushbutton Switch 8 switches Tilt sensor Accelerometer Analog Sensors Potentiometer LDR light sensor NTC temperature sensor Joystick Ultrasound Piezo element as knock sensor All examples contain a list of the parts as well as the Arduino and Processing files you need. 'G' turns the grid ON/OFF

The World Famous Index of Arduino & Freeduino Knowledge Arduino Tutorial: An Introductory Guide Update! Don’t miss our famous article: Top 40 Arduino Projects of the Web. Previously we introduced you to the Arduino and it’s awe-inspiring incredibleness. Now we’ll take you on an in depth plunge with enough resources and projects to keep you occupied for the next decade. The best place to get started would definitely be their comprehensive website. I strongly encourage you to browse their resources. They have vast tutorial, learning, hacking and reference sections. Arduino Tutorials: As usual, Instructables has plenty of tutorials also.If you’ve ever thought, “Can the arduino do…?” The Arduino uses the ATmega168.

Arduino Tutorial - Lesson 5 We've done a lot so far, blinking lights, printing messages...all of that stuff is output: signals coming from the Arduino. The next step is to start playing with input, with the Arduino responding to outside events. In this lesson we will begin with the most basic kind of input, a push-button switch! You're probably familiar with switches, there's tons of them in your house. On the left, the switch is open and no current flows. (thanks wikipedia!) In this photo, you can see the internals of a light switch. Light switches are great but we need something smaller. These little switches are a 1/4" on each side, cost about 25 cents, and can plug directly into a breadboard. Normally, the two wires are disconnected (normally open) but when you press the little button on top, they are mechanically connected. To get the buttons to sit better in the protoshield, you may want to straighten out the legs (just squish them with a pair of pliers) so that they look like the button on the left. Fig 5.2

Cheap Arduino Wireless Communications I was looking for a way to handle wireless communications between two Arduino boards. Other options like Xbee or Bluetooth were going to cost $50 to over $100. Then I found a cheap RF transmitter and receiver at Sparkfun. The total cost is only $9! Here are a few limitations to RF solution: Communications is only one way. The advantages are that it is cheap and it is pretty easy to use. Below are some images showing how I hooked up the receiver and transmitter to two different Arduino boards. Here’s a picture of the my actual bread boarded circuit. Since the receiver is constantly picking up random noise I add a few extra bytes to every data packet. I broke the Arduino code into two files. I did all of my initial testing without any of these improvement and everything worked fine with these devices inside the same room. Add an antenna. I got a lot of help from the transmitter/receiver data sheets, and from this article. I’ll mention an even cheaper idea I had while doing this. Permalink