If you're looking for a fun project or just something to annoy someone - check out this project by EE and Arduino enthusiast Tim Pitman. He has created an Arduino-based "noise box synthesiser" that is a whole lot of blinky and noisy fun. It's much more than simple beeps - it has many features including a 16-step programmable sequencer with adjustable frequency and duration for each step; synthesizer with 4 output waveforms (sine, square, triangle and sawtooth); noise generation (sirens, laser beam, random noise); and special random sound modes. A group of LEDs on the enclosure indicate the current sequencing step and provide visual stimulation for younger users - for example:
This is a relatively simple project that would be fun for young and old - so visit Tim's website for all the details. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're new to Arduino, the first step is a solid board for your projects - our Freetronics Eleven - the Arduino-Uno compatible with low-profile USB socket, onboard prototyping space and easy to view LEDs: