Here are some links for resources that we have found usfull:

Partners:

JEM Innovations is a product development and engineering company we work with.

Electronics Resources:

SparkFun Electronics is a supplier of electronic components and modules.
DigiKey is an electronic component supplier.
Mouser is another electronic component supplier.
Atmel Semiconductors is the maker of the AVR micro-controller, memories and other useful devices.
NXP Semiconductors is the maker of the LPC series ARM micro-controllers (formerly Phillips).

Java Resources:

Java home page at Sun
Mobile & Embedded community, with open source community projects.
Boulder Java Users Group is a great collection of very smart & passionate Java developers.
Denver Java User Group is another great group of smart & passionate Java developers.
Systronix is the makers of the JStamp, JVM on a chip, and other interesting projects.