Any Arduino fans out there?

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Looking for anyone that wants to share their arduino project ideas or code. My arduino is currently in an autonomous vehicle waiting for more sensors, I have two infrared sensors but hope to add an ultrasonic sensor for better speed control.

i have always wanted to buy one, but cash has been tight lately so i ordered a kit with a few sensors and basic parts for my birthday, also got enough stuff laying around so i cant wait to get started.
i have yet to start learning the APL, mostly because i have a hard time finding any way to simulate the behavior of an arduino digitally.
i have been playing around with as many examples of robot programming that i could but i feel it will be hard to relate to without the devboard to actually see what happens.

I got my arduino uno for about $30. I mostly use if else statements and then change the values to get my robot to react to its environment the way I want it to. I use the servo library because I'm using a team losi rc truck and the signals can control the steering servos and the speed controller.

I use AVR microcontrollers, which are the hearts of Arduinos.

My current project is a digital-analog hybrid synth that will generate sound by varying the duty-cycle of a PWM-switched LED shining on a CdS photoresistor in a Wein-bridge oscillator. The photoresistor responds slowly to changes in light and is also very thermally sensitive (most optoelectronic components are), and I'm hoping this will give a cool quality to the sound. We shall see.

I'm also working on a switching power supply for my linear bargraph nixie clock (uses an IN-13 nixie). Currently it is powered by rectified mains, which is unsafe.

I'm into robot building, too. My 3kg autonomous sumo robot won third in Seattle Robothon 2007 (Powered by AVR, of course!). You guys might want to look into competitions in your area, it's really fun to watch something you built compete against other robots and a great way to share ideas, too.

I have some ideas for fighting robots and I thought it would be fun to have some made out of wood with extra arms and legs available so the little robots could really damage each other and it would be easy to fix afterward. Every robot needs a little mini skill saw to do some damage

If you're referring to the programming language used by the Arduino, (I assume you are calling it arduino programming language), then this is incorrect. While APL is the name of a different programming language (put APL into Wikipedia), this is not what the Arduino uses. the Arduino uses a modified version of C++. The modifications make the language higher- level and much easier for a beginner to learn.

I've had one for a couple years sitting around. I finally got around to using it for a project. It's basic, but it will use the inputs from the gear lever sensor on an automatic transmission, and turn on a LED to indicate what position (park, reverse,...) the transmission is in. I know, it's a lot of work to get rid of a perfectly functional indicator needle.

I've been playing with RepRaps (self-replicating rapid prototypers) a.k.a. 3D printers recently, and I hope to build myself one soon. The design I have seen uses Arduino's and PICAXE chips. I still have much to learn about them, but I'm a member of a "Makerspace" or "Hackerspace" where a couple of other members already have working machines.

I've one, but never did much with it, an arduino duemilanove. I'll get around to it one of these days.. But I love what I see in its potential.

I had an Arduino, however, I made a sonar for my younger sister (she has cortical vision impairment), and so now I no longer have it. To be honest, I would prefer to use a Microcontroller that is easier to integrate into circuitry and I even have a PIC32, however, interfacing with it is terrible, and the software in general isn't well documented and they do too much wrong (or at least in my own opinion).