Digi Connect® Wi-ME
Module de serveur de périphériques 802.11b sécurisé
- Interface réseau sans fil 802.11b avec sécurité WPA2/802.11i
- Format d’empreintes commun pour la gamme de modules filaires et sans fil
- Interface série haut débit intégrée (UART)
- Radio pré-certifiée et températures de fonctionnement étendues
- Kits de développement pour le micrologiciel plug-and-play Digi et NET+OS®
- Descriptif produit
Le Digi Connect Wi-ME est un module embarqué sans fil 802.11b entièrement personnalisable, pérenne et sécurisé reposant sur la technologie NET+ARM 32 bits leader de Digi. Ces modules assurent une intégration 802.11b totalement transparente, qui élimine la complexité traditionnelle des tâches d'intégrations matérielles et logicielles, tout en offrant une sécurité LAN sans fil 802.11i/WPA2.
| Digi JumpStart Kits | Amérique du Nord: | International: | |
 Digi Connect Wi-ME Digi JumpStart Kit for NET+OS 7 w/Eclipse-based Digi ESP IDE, USB debugger, installation and setup support package Plus d'info |
DC-WME-NET |
DC-WME-NET |
 Nous contacter |
| Integration Kits | Amérique du Nord: | International: | |
 Digi Connect Wi-ME Integration Kit - Includes module w/plug-and-play firmware, antenna, development board, documentation, Integration CD, cables and power supply Plus d'info |
DC-WME-KT |
DC-WME-KT |
Nous contacter |
| Modules with Plug-and-Play Firmware | Amérique du Nord: | International: | |
| Digi Connect Wi-ME (single-unit pack with antenna) Plus d'info |
DC-WME-01T-S |
DC-WME-01T-S |
Nous contacter |
| Modules for NET+OS | Amérique du Nord: | International: | |
| Digi Connect Wi-ME (single-unit pack with antenna) Plus d'info |
DC-WME-01T-C |
DC-WME-01T-C |
Nous contacter |
| Specifications | Digi Connect ME® | Digi Connect® Wi-ME |
| Hardware | ||
| Processor Type | 32-bit Digi NS7520 processor | |
| ARM Core | ARM7TDMI | |
| Processor Speed | 55 MHz | |
| Memory Base Population | 2/4 MB NOR flash | 4 MB NOR flash |
| 8 MB SDRAM | ||
| Pins/Form Factor | RJ-45 connector style with 20-pin micro pin header (Samtec FTS-110-01-F-DV-TR) | |
| High-Speed TTL Serial Interface | Up to 230 Kbps data rate Full signal support for TXD, RXD, RTS, CTS, DTR, DSR and DCD Hardware/Software flow control |
|
| GPIO | Up to 10 shared with 1 external IRQ | |
| On-module Power Supervisor | • | |
| JTAG Interface | NET+OS development modules only (P/N DC-ME-01T-JT, DC-ME4-01T-JT) | |
| Wave-Solderable Design | No clean flux process | |
| Dimensions (L x W x H) | 1.445 in (36.7 mm) x 0.75 in (19.05 mm) x 0.854 in (21.69 mm) | 1.845 in (46.86 mm) x 0.75 in (19.05 mm) x 0.854 in (21.69 mm) |
| Network Interface - Wired | ||
| Standard | IEEE 802.3 | — |
| Physical Layer | 10/100Base-T | — |
| Data Rate | 10/100 Mbps (auto-sensing) | — |
| Mode | Full- or half-duplex (auto-sensing) | — |
| Connector | RJ-45 | — |
| Integrated Ethernet MAC/PHY | • | — |
| PoE Power Pass-Through | • | — |
| Network Interface – Wireless LAN | ||
| Standard | — | IEEE 802.11b |
| Frequency | — | 2.4 GHz |
| Data Rate | — | Up to 11 Mbps with automatic fallback |
| Modulation | — | CCK (11/5.5 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps) |
| Typical Transmit Power | — | 16 dBm typical |
| Receive Sensitivity | — | -66 dBm @ 11 Mbps |
| Connector | — | 1 x RP-SMA |
| WLAN Security | ||
| WEP (Wired Equivalent Privacy) | — | 64/128-bit encryption (RC4) |
| WPA/WPA2/802.11i | — | 128-bit TKIP/CCMP (AES) encryption Enterprise mode (802.1X): LEAP (WEP only), PEAP, TTLS, TLS; EAP-FAST, GTC, MD5, OTP, PAP, CHAP, MSCHAP, MSCHAPv2, TTLS-MSCHAPv2 Pre-shared key mode (PSK/Personal) |
| Environmental | ||
| Operating Temperature | -40° C to +85° C (-40° F to +185° F) | -30° C to +75° C (-22° F to +167° F) |
| Storage Temperature | -50° C to +125° C (-58° F to +257° F) | |
| Relative Humidity | 5% to 90% (non-condensing) | |
| Altitude | 12,000 feet (3,658 meters) | |
| Power Requirements (3.3V) | ||
| Maximum | 270 mA (891 mW) | 400 mA (1.32 W) |
| Regulatory Approvals | ||
| FCC Part 15 Class B, EN 55022 Class B | • | |
| EN 61000-3-2 and EN 61000-3-3 | • | |
| ICES-003 Class B, VCCI Class II, AS 3548 | • | |
| FCC Part 15 Sub C Section 15.247 | • | |
| IC RSS-210 Issue 5 Section 6.2.2(o) | • | |
| EN 300 328, EN 301 489-17 | • | |
| UL 60950-1, EN 60950 (EU) | • | |
| CSA C22.2, No. 60950 | • | |
| EN 55024 | • | |
Digi Connect Wi-ME - Front
Digi Connect Wi-ME - Bottom
Hardware
Software
Feature Specs
Overview
This sample application demonstrates how to create a fully web-enabled and intelligent weather data collection solution. It is built on a Digi Connect ME® embedded module that is connected to a basic and cost-effective weather instrument equipped with a temperature sensor to measure the current temperature and a cup anemometer with integrated wind vane to determine wind speed and direction. The weather instrument is mounted on the roof of the Digi corporate headquarters in Minnetonka, MN, USA.
Click the link below to access live weather information through your web browser.
Digi Connect ME weather station live demo
You can also obtain read-only access to the administration pages of the demo by logging in as user "demo" with password "demo".
The number of users that are allowed to access the live demo at the same time is limited. If you should not be able to view the demo at this time, please try again later.
Design and Implementation
The custom embedded NET+OS application running on the Digi Connect ME/Wi-ME module was created using the Digi JumpStart Kit for NET+OS and collects environmental data through the weather instrument's 1-Wire® interface. The information is then made available to web browsers by an integrated web server, which also allows the launch of a custom Java applet to visualize the data through a graphical user interface. The Java applet receives the weather data updates through a simple protocol that is based on standard UDP communication.
As the diagram above shows, the 1-Wire connection coming from the weather instrument is converted to RS-232 to feed directly to a standard Digi Connect ME/Wi-ME development board, which is used as a simple carrier board platform.
Further hardware integration is possible by designing a discrete solution with native 1-Wire interface components. The flexibility and simplicity of the 1-Wire bus also allows you to integrate additional inexpensive sensors, like barometric pressure, precipitation or humidity, without the need for external power supplies.
The embedded software and the Java applet can also be modified to offer additional functionality such as the logging and charting of historical data or the integration of additional sensor elements.
Developers Only
Please note that you need a Digi JumpStart Kit for NET+OS to compile the NET+OS portion of the application. Contact your local Digi sales office or distributor for information on how and where to purchase it.
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