RFM12B Board prototyping The pre-assembled version comes with

The pre-assembled version comes with the SMD-sized DS3231 chip

All the power and signal lines are brought out to both sides of the board for daisy-chaining other i2c-conformant boards

even 24v strips are supported

such as the USB BUB

The PSIX and SPI/ISP headers are not included

RFM12B Board prototyping The pre-assembled version comes withThe RFM12B Board is a compact breakout board for HopeRF's RFM12B radio module, as featured on all JeeNodes and JeeLinks. If you are looking for an affordable way to add wireless communication to your Arduino (compatible) board, this is the board to get. The board works with a whole range of Arduino (compatible) boards, such as official Arduino boards (both 5V and 3. 3V versions), Freeduino, JeeNode SMD kit, RBBB and Boarduino. For ease of use, the