Infrared Plug ARM The only requirement is that

The only requirement is that the A4 and A5 lines be used for hardware I2C

The Standard kit has an RFM12B radio module with the low profile SMD crystal

The HYT131 package needs moderate soldering skills

and 4x 6-pin male headers to connect a JeeNode

and just 3

Infrared Plug ARM The only requirement is thatThe Infrared Plug is a small board which can send and receive modulated infrared signals, as commonly used by many remote controls and appliances around the house. The board uses a CMOS 555 timer chip to generate the 38 KHz carrier frequency, and requires no further adjustments due to the use of 1% precision parts. An on board transistor controls one or two IR emitter LEDs ( 50 mA for one LED, or 100 mA for two). The pre assembled version comes with