Teardown: Fitbit Zip Packs Lots of Functionality Into Small, Water-Tight Package

Return to Article

View Comments: Oldest First|Newest First|Threaded View
<<  <  Page 2/2
User Rank
Some question about the fitbit dongle
BlueHorse   6/6/2013 9:56:11 AM


It's a really nice article, love it. It helped me to know more about the device.

I also have a fit bit and it works great, However there are some things i dont understand.

As it usages a NRF8001 and it is a Bluetooth Low Energy, So how is it able to sync with Dongle as well as the smart phone's? Is it the Dongle which helping to do this? Is the dongle Dual mode, so that it can talk with Classic Bluetooth as well as Low Power?

Also when i plug in the dongle in my laptop i dont see it as a normal bluetooth device it appears as a human interface device in device manager. Isn't the dongle a bluetooth device? If yes why doesn't it show up as a bluetooth device?

I am really curious about it and looking forward to hear from someone.


Thanks in advance :)


User Rank
Re: The teardown and the commentary
gregoski   8/21/2014 11:00:20 AM
Hi Rich,

This teardown was extremely helpful to me.  I am conducting a reliability study with 20 Fitbit Zips using a mechanical step machine.  I have two questions.  The first is whether I can have permission to use the internal picture you posted (I would provide the reference back to this teardown and credit you).  The second is whether you would be willing to identify the exact location of the mems accelerometer on the board.  You mentioned it is a 3mm x 3mm part that can easily be mistaken for one of the passives.

For the article I am showing the teardown of an actigraph 7140 that used a piezo-electric type accelerometer and I want to show the insides of the zip along with a MIT schematic of the Capacitance Acceleromer. 

I look forward to your correspondence.


<<  <  Page 2/2
Partner Zone
More Blogs
Remote monitoring now looks beyond the individual motor or conveyor and instead views the process from end to end.
At ARM TechCon 2016, CEO Simon Segars will discuss how he sees billions of devices scaling to trillions as IoT applications proliferate. We know it’s happening. How do we prepare?
Highly regarded engineer and physicist Ransom Stephens speaks with Design News about his extensive science and engineering background, the serious yet funny study of neuroscience, and how one primes their brain for innovation.
It's your turn to cast your vote for one of these 12 finalists to win the ARM TechCon Reader's Choice Award for the most innovative product of the past year.
While supercapacitors and rechargeable Lithium-ion batteries both store energy, these two technologies are very different in their design and in their performance capabilities.
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 10 - 14, Embedded System Design Techniques™: Getting Started Developing Professional Embedded Software
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10

Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Course September 27-29:
Sponsored by 3M
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service