The heart of the product is the BoardX Motherboard, essentially a blank slate with a mini solderless breadboard and a host of ports for plugging in add-ons. Those add-ons connect with standard header pins and can take the form of anything from a processor to sensor arrays. Only a few of these modular components have been designed so far: the AVR-X (an Arduino-compatible microcontroller), FRAM-X (512 byte chunks of stackable Ferroelectric RAM) and ADC-X (an 8-channel analog to digital converter). An ARM add-on is in development but, since the entire project is open source, anyone with the appropriate skill level is free to take a stab at creating their own add-ons. If you want to chip in towards the $20,000 goal it'll take at least $92 to get you a BoardX and AVR-X, but Greene will take donations as low as $1 (you'll just have to accept his unpublicized gratitude as your reward). $135 will get you the board and all the add-ons, while $500 will score you all the parts a month early plus a few extras and your name listed on the BoardX site.
Previous project update: Ray, the rather inventive and versatile solar charger is getting close to hitting its goal of 2,000 presale commitments. As of this writing its resting at 1,576.