100,000 chiptunes in your pocket!

The SIDstick is a pocket-sized chiptunes player featuring:
* Removable Storage supporting microSD cards, 1 card can hold 20,000 songs
* 20+ hour battery life
* Super Hi-Quality hardware-based playback at 31kHz sample rate, >16 bit resolution
* Completely Open, hardware and software are available under the MIT license
* Upgradable with connections on the board

What Are Chiptunes?
Chiptunes are songs written to be synthesized in real-time. A lot of chiptunes are ripped from classic videogames, and some are new works. The SIDstick plays the most common variety of chiptunes, music written for playback on a SID chip. Probably the biggest collection of SID music is the High Voltage SID Collection, which has 36,000 SID tunes, free to download

Here's a demonstration of SIDstick:

Is It Hard to Use / Assemble?
No, it's pretty easy - there aren't a lot of components on the SIDstick, most of the magic happens within the microcontroller. The microSD card slot comes pre-assembled, so you don't need to do any surface mount soldering. Check out the howto for assembly and usage info.

Technical Details
Here are the details of SIDcog, the core audio processor;
* 31kHz sample rate
* >16bit resolution
* Full filter support - any combination of Lowpass, Bandpass and Highpass filter
* Full envelope support with a logarithmic release/decay curve. ( uses the same logarithmic approximation as a real SID)
* Supports all 4 waveform types
* 16 steps main volume
* Waveform reset bit works. (many Rob Hubbard tunes relies on this exact behaviour)
* Ring modulation
* Oscillator synchronization

SIDcog runs on a Parallax Propeller, an 8-core, 80MHz microcontroller, and can be reprogrammed with a PropPlug, connectors are on the board.

The SIDstick is the product of a group effort - Johannes Ahlebrand did the SIDcog core & desktop app, Jeff Ledger did the SD card interface and track / volume control. I did the circuit board layout. Thanks also to James Long from Lil' Brother SMT Assembly for the microSD board design and assembly services.

You'll need a few tools to build this project
(1) A soldering iron & solder
(2) Diagonal Cutters

You'll also need a 3xAA batteries and a microSD card to hold the songs you want to listen to. The SIDstick takes about 40 minutes to build.