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joyhaa
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re: How to develop Z-Wave devices
joyhaa   4/20/2013 4:01:56 PM
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Z-wave rules for HA(home automation), Zigbee is still _trying_ for SE(smart energy) after so many years, I worked on zigbee for a long while and hated that, it's too complicated for simply sensors, the protocol/profile design is terrible(i.e. no two profiles can co-exist on the same node), the only thing good about zigbee is that it has a fancy name, its spec is made by marketing folks instead of engineers.

joyhaa
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re: How to develop Z-Wave devices
joyhaa   10/12/2012 10:05:54 PM
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the problem is that: it's nearly a single vendor thing, unlike zigbee. z-wave is easier to implement while zigbee is not, however zigbee seems more open, also i don't think zwave support 6lowpan http://code.google.com/p/6lowpan/

ssfrr
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re: How to develop Z-Wave devices
ssfrr   10/11/2012 3:21:24 PM
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Overall a well-researched article by someone obviously familiar with Z-Wave. Nice overview. The link to the BuLogics website is giving me trouble because of the trailing slash. Full Disclosure: I work for BuLogics.

Tim Miner
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re: How to develop Z-Wave devices
Tim Miner   10/10/2012 3:59:44 PM
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I found the article to be packed with great information. However, the final edit semed to leave several run-on sentences that promoted confusion. Look at this example taken from the last portion of the article: 7. Conclusion The integration of Z-Wave hardware in own projects is quite... To my eye, the word "your" was probably intended to go between "in" and "own" but is missing. This kind of omission is sprinkled througout the article.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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