Connecting two ADXL345s to one Arduino

I'm getting this question more frequently than others on my previous post about ADXL345 and Arduino, so I've decided to answer it with a post of itself. So, how do you connect and read from two ADXL345s with a single Arduino board? It's pretty straight forward if you already have one ADXL345 running. If you don't, head here, set everything up and get back here because I'll be assuming that you have read it and familiar with the concepts from the previous post.

ADXL345 accelerometer breakout board + Arduino and Processing

Some time ago I've purchased an ADXL345 accelerometer breakout board from SparkFun.com. After some searching and datasheeting (that's an awful term, I know :D), I've finally came up with code, which will allow me to talk to the accelerometer using my Arduino and even pass the data on, to Processing (it's a fun language, covered in my previous post)



In this post I will cover the setup for the communication procedure between the ADXL345 and the Arduino and then, between the Arduino and Processing (ie your PC). All the sources are at the bottom of the post, as usual. (Code is now updated for Arduino 1.0.4)

Opening a PHP to Java socket

In a project I've been working on recently we needed to integrate a functionality we have in a few Java classes we developed in to a PHP script. If those specific classes could be wrapped in a simple command-line app, it would not have been a problem, as you can execute command-line apps from PHP easily. But! These specific Java classes took very long time to load (around two seconds!) before they could be used.