From Capsil Wiki
The BTnode Rev3  is a compact dual radio device used for fast proto-typing of sensor and ad-hoc networks. It makes use of the Atmel AVR microcontroller and is very simliar to the Crossbow Mica2 mote, differing in the amount of SRAM (256K) and the addition of the BluetoothTM radio .
|Sensing:||Generic sensor board extensions|
Class 2 BluetoothTM Radio
|Storage:||3x60 kByte low power SRAM.|
BTnode Rev3 is mainly used as a research platform in mobile and ad-hoc connected networks (MANETs) and distributed sensor networks.. It is currently being used in two key projects:
The standard power supply for the BTnode Rev3 are two primary/rechargeable AA batteries in the range of 2-3V DC. The device also contains a boost converter with an input range of 0.5-3.3V DC and an alternate supply input via the VDC_IN pin in the range of 3.6-5.0V DC.
- Primary Supply Linear LTC3429, 600mA max., 0.5-4.4V to 3.3V.
- Alternate Supply LT1962, 300mA max. 3.6-5.0V to 3.3V.
- Secondary Supply IO Default OFF.
- Secondary Supply BT Max. dissipation 80 mA. Default ON.
- Secondary Supply CC Max. dissipation 30 mA. Default OFF.
- Battery Charge Indicator
- On/Off Switch for the primary power supply.
- Current Access Shunts to all subsystems for in-situ power profiling (AVR, BT, CC).
|BTnode rev3 Bluetooth1||BTnode rev3 Low Power Radio1|
|Battery Supply||2 AA cells primary/rechargeable|
|Battery Capacity||2900 mAh|
|Minimum Vin||0.85 V|
|CPU sleep, Radio off||9.9 mW|
|CPU on, Radio off||39.6 mW|
|CPU on, Radio listen||92.4 mW||82.5 mW|
|CPU on, Radio RX/TX||105.6 mW||102.3 mW|
|CPU on, Bluetooth Inq||198 mW||---|
|CPU on, Radios both listening||135.3 mW|
|Max. Power||198 mW||102.3 mW|
Table source: 
1all values where measured on a live system running at 3.3V
For additional information on the BTnode, please see the following sites:
- BTnodes - A Distributed Environment for Prototyping Ad Hoc Networks
- BTnodes project page at Sourceforge
- BEUTEL Jan; KASTEN Oliver; MATTERN Friedemann; RÖMER Kay; SIEGEMUND Frank; THIELE Lothar; "Prototyping wireless sensor network applications with BTnodes", Lecture notes in computer science, Wireless sensor networks, Jan 2004, vol. 2920, pp. 323-338
- ↑ http://www.btnode.ethz.ch/pub/uploads/Documentation/btnode_rev3.22-antenna5.jpg
- ↑ http://www.btnode.ethz.ch/pub/uploads/Documentation/btnode_rev3.22-antenna5.jpg BTnode Rev3 with wire antenna