robotiko

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.

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

Vizualisation

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,

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

Primus + MQTT + Arduino == Internet of Things!

Server

Install dependencies

$ npm install

	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

	// 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>

	#!/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}"

	#
	# 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