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RFBee User Manual v1.1 Table of contents 1 Overview ........................................................................................................................................................................... 2 1.1 Licensing .............................................................................................................................................................. 2 1.2 Specifications........................................................................................................................................................ 2 1.3 Electrical Characteristics ...................................................................................................................................... 3 1.4 Board layout ......................................................................................................................................................... 3 1.5 Microprocessor-Atmega168 ................................................................................................................................. 3 1.6 RF Transceiver-CC1101 ....................................................................................................................................... 3 1.7 Pin layout .............................................................................................................................................................. 4 1.8 Schematic.............................................................................................................................................................. 4 2 Hardware Installation ........................................................................................................................................................ 6 3 Configuration .................................................................................................................................................................... 8 3.1 Version .................................................................................................................................................................. 8 3.2 Out of the box ...................................................................................................................................................... 8 3.3 AT Commands ...................................................................................................................................................... 8 3.3.1 AT Format: ................................................................................................................................................... 8 3.3.2 Supported commands: ................................................................................................................................ 9 3.3.3 Output format ............................................................................................................................................. 11 3.4 Broadcasting ....................................................................................................................................................... 11 4 How to update firmware .................................................................................................................................................. 12 5 Revision History ............................................................................................................................................................. 13 Page 1 of 13 8/27/2010 1 Overview The RFBee is a RF module providing easy and flexible wireless data transmission between devices. It is based on a AVR Atmega168 working as a fully functional Arduino connected via SPI to a TI CC1101 RF transceiver. Features: Range: Indoor/Urban: up to 50m; Outdoor line-of-sight: up to 120m; Receiver Sensitivity: -95dBm RF Data Transmission Rate: 4,800bps; 76,800bps Working Frequency : 868MHz & 915MHz Communication type: Point to Point, or Point to Multipoint. Easy-to-Use Serial Interface and rich extendable ports Easy-to-Use AT Command: Set working mode, Serial Baud Rate, etc. Open source Hardware and Firmware Socket compatible with the Xbee, so you can plug it into any Xbee socket as a quick replacement. Note: only the Rx,Tx, VCC, GND pins are identical to the Xbee. RFbees will not communicate with Xbees, so RFbees need to be used on both ends of the wireless connection. 1.1 Licensing This documentation is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License 3.0. Source code of the Atmega 168 firmware used in the RFBee is licensed under GPL/LGPL, see source code files for details. 1.2 Specifications Specification Value Microprocessor Atmega168 PCB size 24.38mmx32.94mmx0.8mm Indicators No Power supply 3.3v IO counts 9 ADC input 7(6 multiplexing with IO) Program interface USB Connectivity Socket compatible with XBee Communication Protocol Uart(TTL) Operating Frequency Band ISM 868MHz & 915MHz Outline Dimension 24.38mmx32.94mmx15mm Page 2 of 13 8/27/2010