Chapter II. Introduction

Table of Contents

1. WSN430 Kit Overview
2. WSN430 Features
3. Microcontroler MSP430 Features
4. RF CC1100 Features
5. External Components

This user's manual gives a description of the hardware WSN430 node features. WSN430 is a single board with communications, sensor and processing capabilities.

	This users's manual is not a software guide to programming the WSN430.
	The following resources are available regarding software: Links tab on the Worldsens web pages The WSIM manual gives several examples that run on the WSN430 node. MSP430 code examples provided by TI. The GCC toolchain for the Texas Instruments MS4P430 family.

1. WSN430 Kit Overview


	Read carefully the manual before powering on any WSN430 node since any erroneous manipulation may cause severe damage to the material.

The basic Worldsens WSN430 Kit contains the following items (See Figure II.1, “Worldsens WSN430 Basic Kit”):

10 WSN430 nodes in their box with a rechargeable PoLiFlex battery (See Figure II.6, “Worldsens WSN430 node”)
2 wall power DC adaptor supplies (See Figure II.3, “Power adaptor”)
1 JTAG/Serial multi connector (See Figure II.4, “JTAG multi connector”)
1 MSP430-JTAG cable (See Figure II.5, “JTAG cable”)

	ESD WARNING
	The WSN430 (Figure II.2, “Worldsens WSN430 node”) node is an electronic device and therefore can be damaged by Electrostatic Discharge (ESD). While handling these devices, follow ESD prevention procedures and use an ESD wrist strap.

WSN430 Kit.

Figure II.1. Worldsens WSN430 Basic Kit

Front side (left) and back side (right) of a WSN430 node. On the front side a windows allows to see the LEDs and the photodiodes.

Figure II.2. Worldsens WSN430 node

The switch MUST be on 6Volt and the polarity MUST be such that the plus is on the central pin. Please refer to the the power chapter. Be aware that any wrong voltage or wrong polarity could severely damage all the components.

Figure II.3. Power adaptor

The JTAG multi connector offers a 7PIN JTAG for the MSP430 and a serial connector.

Figure II.4. JTAG multi connector

JTAG cable for MSP430.

Figure II.5. JTAG cable


	Check that the WSN430 Kit is complete.

2. WSN430 Features

WSN430 is an ultra low power wireless module for sensor network applications. WorldSens sensor node (WSN430) is an ideal fit for low power, low cost, open source platform designed for deploying autonomous large scale sensor network applications. WSN430 offers many features like:

Ultra low power CC1100 multi channel RF transceiver in the globally compatible ISM band (315 to 915 Mhz) with an integrated onboard antenna;
8Mhz TI MSP 430 ultra low power 16bit RISC mixed-signal microcontroller; Cycle-accurate simulation
1MB external flash memory for data storage;
Support for several OS and real time OS (Contiki, FreeRTOS, TinyOS);
Two integrated photodiodes, one embedded temperature sensor and a standard ultra compact connector for optional sensor extension cards;
PoLiFlex battery with a linear charge management controller.

Front side (left) and back side (right) of a WSN430 node. On the front side a windows allows to see the LEDs and the photodiodes.

Figure II.6. Worldsens WSN430 node

WSN430 Block Diagram.

Figure II.7. Worldsens WSN430 Block Diagram

3. Microcontroler MSP430 Features

The WSN430 is based on 8Mhz TI MSP430-1611 ultra low power 16bit RISC mixed-signal microcontroller.

Table II.1. TI MPS430 Specification

	Specification	Remarks
Microcontroller	8Mhz / 16 bit RISC	TI MSP430-1611
Program flash memory	48KB
RAM	10KB
A/D Converter	12 bit ADC	8 channels, 6 (ACD0-5) on the standard extension cards connector
D/A Comparator	12 bit DAC	2 channels (DAC0-1) on the standard extension cards connector
Current draw	330 microA	Active mode (1Mhz, 2.2V)
	1.1microA	Standby mode
	0.2microA	Off mode (RAM Retention)
	Wake up time	0.6micros From standby mode

4. RF CC1100 Features

The WSN430 integrates the ultra low power CC1100 multi channel RF transceiver in the globally compatible ISM band (315 to 915 Mhz) with an integrated onboard antenna.

Table II.2. RF CC1100 Specifications

	Specification	Remarks
RF Transceiver	Chipcon CC1100 from TI
Frequency band	315 / 433 / 868 and 915 Mhz	ISM / SRD band
Output power	-30dBm to +10dBm	Output power is programmable and full range is available in all frequency bands
Receiver sensitivity	-88dBm	250kbps, 1% pck error rate, 62 Byte pck length
Current draw	16.2 mA	Rx mode, input at sensitivity limit, 250kbps
	15.1mA	Tx mode, 0dBm output power

5. External Components

The WSN430 also integrates several external components.

Table II.3. External Components

	Specification	Remarks
Flash memory	1MBytes	ST M25P80
Photo diodes	400nm to 1100nm and 750nm to 1100nm	SFH 2400 and SFH 2400 FA
Linear charge manager controller	Automatic end of charge and power down	MCP73861
Unique serial number	8-Bit Family code, 48-Bit Serial Number, 8-Bit CRC	DS2411
Battery	PoliFlex Cell, 830 mAh	VARTA, 18gr.s
Size	65 x 40 x 8 mm	Including the battery


Chapter I. About this document		Chapter III. WSN430 Schematic