The JeeLink is a fully assembled and ready-to-use USB-type “stick” which plugs directly into a PC, Mac or USB hub. It contains Atmel’s ATmega328p AVR microprocessor and HopeRF’s RFM12B wireless radio module. The processor chip is pre-flashed with the OptiBoot loader (compatible with the Arduino Uno) and the RF12demo sketch. See the JeeNode description for more details.
Unlike JeeNodes, JeeLinks do not have any external ports to connect plugs or other components. The JeeLink comes in a clear plastic case and is intended as interface between other JeeNodes and JeeLinks (via wireless) and an attached PC or Mac (via USB).
The JeeLink v3 also has 16 Mbit of flash memory, which can be used to collect data. An on-board accurate 10 ppm crystal helps keep track of time, even when the attached computer is off.
The on-board wireless radio module is the same as on JeeNodes. The standard JeeLink 868 comes with the ISM-band 868 MHz radio module (as used across Europe). *Chose this variant * unless you have a special compatibility requirement with equipment that uses a different ISM band.
For the 433 MHz ISM band, chose the JeeLink 433 option.
For the 915 MHz ISM band, refer to the Modern Device shop (US$ prices).
The documentation and full design details are freely available.