Design Con 2015
Breaking News
Newest First | Oldest First | Threaded View
User Rank
re: Do wireless bike speedometers have a standard?
BicycleBill   6/10/2010 6:12:52 PM
Thanks to both of you for your comments, both of you make good points. But I still technically curious about the frequencies and data formats used in the basic, non-ANT+ unit.--Bill

User Rank
re: Do wireless bike speedometers have a standard?
WKetel   6/2/2010 5:12:49 PM
Bill, you purchase a system from a source, and if it is made correctly it works. The units that have a stronger magnet generating the power pulse for the remote sensor transmitter can indeed have the whole thing set in epoxy, since there would be no battery to replace. Unlike TV remotes, I would prefer that the communications not be universal, in order to reduce the value of the pieces to would-be thieves. That is a problem here, where even a plain bike will wander if it is not securely locked up. The sensor that I like best uses 2 magnets at 180 degrees on the rear rim, and the sense pickup bolted to the frame, so that it is out of the way and out of harms way. Not as light as some, but that has never been a problem for me. A simple charging circuit and after a short distance the CMOS counter would display speed fairly well. And it was not really wireless.

User Rank
re: Do wireless bike speedometers have a standard?
JohnAmschler   6/2/2010 4:23:44 PM
Hey Bill, ANT+ Sport is quickly becoming the de facto standard out there. Garmin, PowerTap, EnkiSports, DigiFit, Tanita (scales) and others use the chip/comm standard; meanwhile, I've heard Polar uses the chip with a proprietary comm scheme. More info about the 2.4GHz ANT+ Transmitter: Disclaimer - I don't work for, nor am I affiliated with ANT+. I'm an athlete and engineer who has been using the products for years and hope to see it in phones soon. Luckily TI is working with them to do just this:

Top Comments of the Week
Flash Poll
Like Us on Facebook Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Max Maxfield

Recommended Reads From the Engineer's Bookshelf
Max Maxfield
I'm not sure if I read more than most folks or not, but I do I know that I spend quite a lot of time reading. I hate to be idle, so I always have a book or two somewhere about my person -- ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...