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Nordic Semiconductor: Inside Bluetooth low-energy technology

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dennism12
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
dennism12   7/29/2011 11:20:57 PM
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Great take off predicted for Bluetooth Low Energy .. See the trend - http://dennismathews.wordpress.com/category/connectivity-trends/

Steve.K
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
Steve.K   12/1/2010 6:40:52 AM
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Eewiz, You may be confusing dual mode chips with single mode chips. Dual mode chips are basically today's Bluetooth chips with additional circuitry for communicating with Bluetooth low energy single mode devices. It's true that when these operate they will consume about 90 percent of the power of a conventional Bluetooth chip. But the single mode chips - the really new part of Bluetooth low energy - operate at much lower power than conventional Bluetooth. Depending on the application these devices will be able to operate for months or years from coin cell batteries with capacities in the 200mAh range. Remember, they are primarily designed for "send[ing] low volumes of data (i.e. a few bytes) infrequently (for example, a few times per second to once every minute or more seldom)".

KeithSchaub
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
KeithSchaub   11/29/2010 9:24:59 PM
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Exactly, and one can imagine a plethora of new devices the could benefit from "rarely used" BLE. Anything involving periodic sampling - the health industry springs to mind - monitoring various signals such as heart rate, blood pressure, temperature, insulin levels, etc. It could also be useful for transmitting non-critical information.

Steve.K
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
Steve.K   11/29/2010 5:27:04 AM
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Or Nordic's Bluetooth low energy kit as featured on the Bluetooth SIG's website here: http://www.bluetooth.com/English/Products/Pages/Getting-Started-Bluetooth-Low-Energy-Technology.aspx

Berwin
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
Berwin   11/26/2010 9:54:17 AM
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Hi, you can get started on Bluetooth low energy with the CC2540DK-MINI kit: http://focus.ti.com/docs/toolsw/folders/print/cc2540dk-mini.html

karlto
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
karlto   11/25/2010 8:40:27 AM
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eewiz, The whole point is that LE reduces the start-up and connection times and therefore the duty cycle versus BR/EDR. Power improvements can be made in either the time domain or the current domain, and both are equally valid. Reducing the radio current is not the only way to reduce power. BTW, streaming data/media was never part of the design goals for BLE.

eewiz
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
eewiz   11/25/2010 7:12:05 AM
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Bluetooth LE is not really a low power device. If you keep the device ON(i.e continuous transmission), then it will consume almost same power as the normal bluetooth. The trick is to keep the device OFF for most of the time and switch ON when only needed. This is OK for some applications mentioned in the article, but is not very suited where realtime transmission is required. Trivia: Bluetooth LE was initially called Bluetooth ULP(ultra low power). They cleverly changed to Bluetooth LE after realizing the power was not much different :)

FDSTM32
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
FDSTM32   11/24/2010 9:03:51 AM
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is that any devlopement or starter kit using bluetooth ?

RF design
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
RF design   11/24/2010 6:56:43 AM
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The low energy Bluetooth is really helpful especially mobile health care product application. However the single mode chip can not interoperability with current classic Bluetooth enabled device. So the dual mode Bluetooth low energy chip must be developed as soon as possible to encourage mobile health care industry.

Robotics Developer
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re: Nordic Semiconductor: Inside Bluetooth low-energy technology
Robotics Developer   11/22/2010 10:20:35 PM
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Bluetooth seems to continue to grow and evolve all the time. The ULP flavor is a nice addition to the family and does seem to have a lot of potential for very low end devices needing some limited wireless communications. I could see this being used in farming both in fields and barns to enable low cost wireless live information updating. With the new ULP technology comes many options, I can't wait to see what products this will generate.

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