Getting Arduino data to a web Page

Being new to Arduino I was a bit overwhelmed by the different ways to do things. So this is what I came up with!

I am using an Arduino UNO R3 clone but the connections I believe are the same for most Arduino’s or can be easily modified for your particular model. This project is the beginning of a UROV that I am building from the ground up and this is my first attempt to work with Arduino. I do not want to turn my UNO into a webserver if I can avoid it because of the shortage of memory and this project is just a few of the sensors that I want to use for my project. I am going to start out by using the premise that my project will eventually use RS485 to communicate serially from my UNO to the PC via a tether.

Based on this I am going to base all my efforts on Serially retrieving the data and processing it through comma separated variables (CSV). As I am just learning to use the Arduino I will start by figuring out how to retrieve data from a sensor and then start adding motors and other gadgets but this is my first step. I am going to start with the BMP 180 with the HMC5883L magnetometer for my project. I have included the sample code that should be easy to follow and modify for your projects. Like most people starting to use the Arduino it can be a little overwhelming with the amount of information on how to do different things with the Arduino so I fell back on some of the things that I am familiar with PHP, HTML, MySQL but Arduino and Processing is all new to me so some things could have probably been done more efficiently. I will say that knowledge of all of the software is a plus in any case. I am also using WAMP server but you can use any web development platform that includes a MySql database engine and PHP, I have been using WAMP for several years and accustomed to it.

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Getting Arduino data to a web Page

Connect the VCC pin to a 3.3V power source. The V1 of the sensor breakout cannot be used with anything higher than 3.3V so don’t use a 5V supply! V2 of the sensor board has a 3.3V regulator so you can connect it to either 3.3V or 5V if you do not have 3V available.

Connect GND to the ground pin.

Connect the i2c SCL clock pin to your i2c clock pin. On the classic Arduino Uno/Duemilanove/Diecimila/etc this is Analog pin #5

Connect the i2c SDA data pin to your i2c data pin. On the classic Arduino Uno/Duemilanove/Diecimila/etc this is Analog pin #4

Link to wiring diagram:

Software for the BMP085:

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