tagliati

int ledPin = 13;
//led for visualization (use 13 for built-in led)

int speakerPin = 11;
//speaker connected to one of the PWM ports

#define c 261
#define d 294
#define e 329
#define f 349

sbright33

// This Arduino example demonstrates bidirectional operation of a 
// 28BYJ-48, which is readily available on eBay for $4.25 inc shipping,
// using a ULN2003 interface board to drive the stepper. The 28BYJ-48 
// motor is a 4-phase, 8-beat motor, geared down by a factor of 64. One 
// bipolar winding is on motor pins 1,3 and the other on motor pins 2,4. 
// Refer to the manufacturer's documentation of Changzhou Fulling 
// Motor Co., Ltd., among others.  The step angle is 5.625/64 and the 
// operating Frequency is 100pps. Current draw is 92mA.  
// Vin w USB power is 4.5v too slow for testing use 5v pin.
//#include <Narcoleptic.h>

pezz

Intro

Just some FYI, to get started:

• I'm using a 16 GB Sandisk SD card.
• I have a model B Pi, 512 MB RAM (not really relevant, thought I'd mention it).
• Monitor and keyboard connected to the Pi itself, for now.
• Network working, internet access.

dwilkins

#!/bin/bash
modprobe gpio-sunxi

echo 3 > /sys/class/gpio/export
pindir=`ls -d /sys/class/gpio/gpio3*`
directionfile="${pindir}/direction"
valuefile="${pindir}/value"

echo "Direction file is ${directionfile}"
echo "Value     file is ${valuefile}"

dypsilon

Backend Development

• node.js
  • Installation paths: use one of these techniques to install node and npm without having to sudo.
  • Node.js HOWTO: Install Node+NPM as user (not root) under Unix OSes
  • Felix's Node.js Guide
  • Creating a REST API using Node.js, Express, and MongoDB
  • Node Cellar Sample Application with Backbone.js, Twitter Bootstrap, Node.js, Express, and MongoDB
  • JavaScript Event Loop
• Node.js for PHP programmers

dypsilon

Vizualisation

• Photon
• CSS3 shapes
• Morris.js
• Cube
• Cubism.js
• D3.js
  • Introduction to D3
• Interactive D3 Tutorial

kljensen

Encrypting text fields in Mongoose is easy using Node's built-in crypto module. You might want to do this if you're using MongoDB as a service (see the recent MongoHQ security breach); or, if you're storing OAuth tokens that could, in the wrong hands, screw with somebody's account on a 3rd party service. (Of course, you should never encrypt passwords: those should be hashed.)

Imagine you have a Mongoose model like that shown below, which is modified only slighly from the example on the MongooseJS homepage.

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');

var User = mongoose.model('User', {
 name: String,

robotiko

Backend Development

• node.js
  • Installation paths: use one of these techniques to install node and npm without having to sudo.
  • Node.js HOWTO: Install Node+NPM as user (not root) under Unix OSes
  • Felix's Node.js Guide
  • Creating a REST API using Node.js, Express, and MongoDB
  • Node Cellar Sample Application with Backbone.js, Twitter Bootstrap, Node.js, Express, and MongoDB
  • JavaScript Event Loop
• Node.js for PHP programmers

Lekensteyn

#
# Makefile for the USB serial device drivers.
#

# Object file lists.

obj-$(CONFIG_USB_SERIAL)			+= usbserial.o

usbserial-y := usb-serial.o generic.o bus.o

julianduque

Primus + MQTT + Arduino == Internet of Things!

Server

1. Install dependencies

$ npm install