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Arduino Tutorials - Ethernet+SD

Arduino Tutorials - Ethernet+SD
Whatsit? We just got the latest version of the Arduino Ethernet shield with a MicroSD card slot and I promised Bill Greiman I'd try out the latest version of his SdFatLib library so I decided to code up a simple Webified file browser. Its a quicky project and demonstrates what you can do, but it isn't 100% perfect so you should be ready to modify it if you'd like to do other stuff, 'K? This is a good beginning to a logging web-monitor, or remote storage system. Get familiar Initializing Micro-SD card on an Ethernet shield The latest Arduino Ethernet shield comes with a handy MicroSD card slot so that you can store and retrieve data through the shield. Be sure to have the very latest version of SdFatLib , as you'll need some of the newer capabilities! First thing to note is that the SS (Slave Select) pin for the card is digital 4 (although as of the writing of this mini-tutorial, the schematic hasn't been updated, you'll have to trust me!) uint8_t r = card.init(SPI_HALF_SPEED); To: List files

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playground - Twitter Library Twitter Library for Arduino Author: NeoCat Be advised that this library does not tweet directly from your Arduino. It sends your tweets to a website, which then tweets it from there. However, username/password will NOT be sent to the site by OAuth mechanism. You can invalidate the OAuth token for this library anytime at 1.3.0 2011-12-04: Support IDE 1.0. Système Adafruit apprentissage Introducing Bluefruit EZ-Link The ultimate serial Bluetooth link & wireless Arduino programmer We are excited to add another product to our growing Adafruit Bluefruit line, this time its the Bluefruit EZ-Link: the best Bluetooth Serial Link device ever made. Getting Data From The Web – Arduino + Ethernet Yesterday we covered how you would go about controlling pins of your arduino over the internet using the Arduino Ethernet Shield set up as a server. Today we are going to take a look at using the shield as a client to get information off of a web page, and report back. I used this method a few months ago when I made the Nixie Twitter follower counter dubbed Twixie. The ethernet shield can be used to access any non-password protected site with ease, but getting the information back to you is the hard part. For Twixie I created a special php page that queried the twitter API and displayed only the twitter count.

Extended EEPROM library for Arduino For my ongoing clock project, I want to persistently store some data. That is, store data that is retained after turning off the Arduino. The processor on the Arduino board comes with on-board EEPROM. In the case of the Arduino Uno, the processor is the Atmega328, equipped with 1 glorious KByte of EEPROM memory. The AVR libraries that come with the ATmega implements a relatively broad set of functions for reading, writing and management of the EEPROM (for a description see the AVR user manual). Using an Arduino + Ethernet Shield to Update a ThingSpeak Channel Using an Arduino + Ethernet Shield to Update a ThingSpeak Channel This tutorial demonstrates how to use the Arduino to read in the analog input and update a ThingSpeak Channel by sending an HTTP POST via the Arduino Ethernet Shield or the Arduino Ethernet (all-in-one). The analog input can be the output of a sensor, like a light sensor or temperature sensor. ThingSpeak Client Arduino Sketch

Ovidiu Predescu's Weblog: Arduino Tiny Web Server - part 3 Update (September 3rd, 2011): The code is on Github: A zip file of the latest version of Arduino TinyWebServer can be found here What is it? Home Automation with Arduino Home Automation with Arduino is a complete resource to start building your own home automation systems based on the Arduino platform. By using this product, you will learn how to automate your home using DIY home automation systems. I also designed the book so it will inspire you to get your own ideas and start designing & building your own home automation systems. In this product, I will show you how to use the Arduino platform for home automation. You will learn how to interface commonly used home automation sensors & actuators to Arduino.

Cheap 2-Way Bluetooth Connection Between Arduino and PC In the guide, I will explain how I managed to send data back and forth between a PC and Arduino via a cheap Bluetooth HC-05 transceiver, which can be found for less than $10 on ebay with the breakout board. The version I have used in this project does not have a breakout board so it's little cheaper but more difficult to solder. I strongly recommend buying the module with the breakout board.