Datasheet and related information (CC1101 based sensor node operating in the 865-867 MHz license free band (in India))

WiSense CC1101 based Sensor node

2014 WiSense (wisense.in)

Microcontroller Module (WSC2955)

MSP430G2955: 56 KB flash, 4KB SRAM Ultra low power microcontroller from TI Standby current (in LPM3) as low as 1 micro amp. Operating voltage: 1.8 V 3.6 V On-chip ADC and comparators SPI/GPIO interface to the radio module UART/I2C/SPI/1-wire/GPIO interface to sensors

o UART and SPI (hardware)o I2C and 1-wire (software)

On board serial (I2C) EEPROM (AT24MAC602) with hardwired and globally unique 48 bit and 64 bit addresses.

Optional on board serial to USB interface (to provide both power and serial connectivity) On chip power supply voltage measurement and temperature sensor Spy-Bi-Wire JTAG protocol for development On board high accuracy 32 kHz crystal On board pads for light sensor (TSL4531) and temperature sensor (LM75B) Two high quality low insertion force 2x6 2.54 mm pitch connectors (Samtec) 1 three pin right angled header (UART) Tx, Rx and Gnd 1 four pin right angled header (Spy-Bi-Wire) Vcc, Gnd, Test, Reset 2 LEDs 1 reset switch Dimensions: 42 mm x 42 mm x 19 mm Comes with four metal standoffs (Height - 12 mm, Dia 6 mm )

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Radio Module (WSR1101)

Two board module (Radio board and Base board)

Radio board

Low power sub-1 GHz radio (CC1101) from TI

Operates in the 865-867 MHz license free band (India only)

Data rate: 38.4 kbps Range: Over 300 meters in the

open (line of sight) Operating Voltage: 1.8 V 3.6 V Modulation: GFSK Sensitivity: -112 dBm @ 1.2 kBaud Max transmit power: +10.8 dBm Sleep mode current consumption is

less than 1 micro amp Microcontroller interface:

o SPI (MOSI/MISO/SCLK/CSn)

o GPIO (2 interrupt pins) Antenna connector: SMA Antenna: Whip (180 mm) Dimensions: 30 mm x 28 mm 2 1x7 2.54 mm pitch headers

(connection to base board)

Base board

Hosts the radio board. Base board can be plugged into

compatible boards such as the WSC2955.

1 CR2032 coin battery holder on the bottom side of the base board.

1 slide switch (power) 1 TSL45315 light sensor on the

base board. 1 LM75B temperature sensor on

the board. 2 2x6 2.54 mm pitch high quality

low insertion force connectors (Samtec)

2 1x7 2.54 mm pitch connector holes (connection to the radio board)

Dimensions: 42 mm x 42 mm x 19 mm

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Coordinator node connected to a laptop. The USB cable isproviding both power and serial connectivity. A simple application

(running under Cygwin) reads messages (from the USB)containing sensor data from remote nodes and pushes them to

the internet.

2014 WiSense (wisense.in)

WiSense Sensor node with three pluggable modules. The top mostmodule hosts several sensors (pressure, temperature, humidity, light etc.). The middle module is the radio module. In addition it hosts two sensors (light and temperature), a coin battery (CR2032) holder and a slide switch (for switching on/off the whole node). The module at the bottom is the microcontroller board. Note that the nodes can be plugged in any order.

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Graph of daily outdoor temperature data reported to Xively.com by a WiSense sensor node

2014 WiSense (wisense.in)