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November 2008

November 30, 2008

CXL Series Accel featured on Japanese TV!

This short clip is taken from a Japanese National TV broadcast discussing the vibrations experienced during off road activities. This clip highlights how using Crossbow's CXL accelerometer mounted on the handlebars of a mountain bike, users were able to monitor the acceleration and shock the rider experienced while running the course. 



For more information on Crossbow's accelerometer products, click here.

November 10, 2008

802.15.4 vs ZigBee - What's the difference?

The Wireless Sensor Network Research group (WSNRG) has published a new article titled 802.15.4 vs ZigBee which helps people understand and distinguish between all the communications technologies that are used in the WSN field: 802.15.4, ZigBee, Mesh protocols, 2.4GHz, 868MHz and 900MHz bands… This document compares both IEEE 802.15.4 and ZigBee technologies while explaining the main characteristics of each.

To summarize 802.15.4 vs ZigBee: 

  • 802.15.4 is thought to be a protocol to get point to point and energy efficient communications.
  • ZigBee defines extra services (start topology routing, encryption, application services) over 802.15.4.
  • ZigBee creates semi-centralized networks where just the end devices can sleep
  • Different completely distributed mesh algorithms are being used over 802.15.4 which is the protocol used to create.

Read the article here.

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