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I'm building a balancing bot and I just saw this new gyro by Analog
Devices that will come out in a few days. There are three choices for
sensitivity settings as opposed to only one for the adxrs300 I am
currently using and it has a built-in 12 bit ADC. Is it worth
considering as an upgrade?

- Alex

ADIS16255 Programmable Low Power Gyroscope

Product Description

The ADIS16250/ADIS16255 are complete angular rate measurement systems
available in a single compact package enabled by Analog Devices, Inc.
iSensor™ integration. By enhancing Analog Devices iMEMS® sensor
technology with an embedded signal processing solution, the
ADIS16250/ADIS16255 provide factory-calibrated and tunable digital
sensor data in a convenient format that can be accessed using a simple
SPI serial interface. The ADIS16255 additionally provides an extended
temperature calibration. The SPI interface provides access to
measurements for the gyroscope, temperature, power supply, and one
auxiliary analog input. Easy access to calibrated digital sensor data
provides developers with a system-ready device, reducing development
time, cost, and program risk.

The device range can be digitally selected from three different
settings: ±80°/sec, ±160°/sec, and ±320°/sec. Unique characteristics
of the end system are accommodated easily through several built-in
features, including a single-command auto-zero recalibration function,
as well as configurable sample rate and frequency response. Additional
features can be used to further reduce system complexity, including:
# Configurable alarm function
# Auxiliary 12-bit ADC and DAC
# Two configurable digital I/O ports
# Digital self-test function

System power dissipation can be optimized via the ADIS16250/ ADIS16255
power management features, including an interrupt-driven wake-up. The
ADIS16250/ADIS16255 are available in an 11 mm × 11 mm × 5.5 mm,
laminate-based land grid array (LGA) package with a temperature range
of −40°C to +85°C.
# Applications: Instrumentation control
# Platform control and stabilization
# Motion control and analysis
# Avionics instrumentation
# Navigation
# Image stabilization
# Robotics


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> ... ADIS16255 Programmable Low Power Gyroscope
http://www.analog.com/en/prod/0%2C2877%2CADIS16255%2C00.html

Very nice features, but US$55! Not inexpensive, but rate gyros aren't
cheap yet; still, an ADXRS401 costs $22. The ADIS16250 or '251 look
attractive, and at US$42 vs $30 for an ADXRS300, might be a good return
on the higher cost - if the application can benefit from 14-bit rate
data or other features. It looks like the parts remove the gyro bias
and can provide an integrated position, too, so they'll take a good part
of the signal processing load. Intriguing devices.
Tom



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It looks like the ADIS16251 is available today. The packaging is a 20
terminal stacked LGA type (see link). Does anyone know where I can
find a socket for it? I want to try avoiding soldering.
http://www.analog.com/UploadedFiles/Packages/953157811CC_20_1.pdf

thanks,
Alex

--- In b...@yahoogroups.com, Tom Becker wrote:
>
> > ... ADIS16255 Programmable Low Power Gyroscope
> http://www.analog.com/en/prod/0%2C2877%2CADIS16255%2C00.html
>
> Very nice features, but US$55! Not inexpensive, but rate gyros aren't
> cheap yet; still, an ADXRS401 costs $22. The ADIS16250 or '251 look
> attractive, and at US$42 vs $30 for an ADXRS300, might be a good return
> on the higher cost - if the application can benefit from 14-bit rate
> data or other features. It looks like the parts remove the gyro bias
> and can provide an integrated position, too, so they'll take a good
part
> of the signal processing load. Intriguing devices.
> Tom
>



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How about this puppy?

http://www.analog.com/en/prod/0%2C2877%2CADIS16355%2C00.html

Vic
--

*____________________________________________________________________________________________*

*Victor Fraenckel
KC2GUI
victorf ATSIGN windreader DOT com**
*



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> ... How about this puppy?

Ouch! How about that $359 price?
Tom



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>> ... How about this puppy?
>Ouch! How about that $359 price?

Tom,

Plug and play has a lot to be said for it! Do you think the
functionality of the device can be duplicated for less money? I
doubt it. This puppy should work "right out of the box".

Vic
--

*____________________________________________________________________________________________*

*Victor Fraenckel
KC2GUI
victorf ATSIGN windreader DOT com**
*



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> ... This puppy should work "right out of the box".

It's a wonderfully complex and sophisticated device, Vic, no dispute,
and might be great in application. Working right out of the box depends
on the work, of course. I've got a magnetometer/2-accelerometer/2-gyro
project going now (and for the last two years); by far most of that time
has been spent on attitude _processing_, not attitude acquisition. As
it happens, a single component sensor system wouldn't have reduced that
effort but for a few initial days, I think. With other sources, it
would tell me where I am, but not where I'm going; that's the hard part,
in my experience.

Also, many of us are essentially experimenting inventors, routinely
pushing things to limits. A $360 loss due to a common development snafu
would be hard. I once thought that accidentally destroying a $5 IC was
expensive, then I melted a Honeywell compass part ($55) with hot air and
thought that was an expensive error. Now I know that will be cheap -
after the first of us reports that they just burned $360 (or next year's
$1000 part) in an instant, even with the great care we surely all
exert. Spooky.
Tom


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Back to the subject:

> ... Is it worth considering as an upgrade?

For a simple balancer, I think it is not worth the additional cost. I
believe other common devices will work well, too.
Tom


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hey, doesn't the PS3 have gyros in the controller (joystick) if so can they
be hacked ??

************************************** Get a sneak peek of the all-new AOL at
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[Non-text portions of this message have been removed]


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The wii does, and its blue tooth, all sorts of hacking is being done with
them.

_____

From: b...@yahoogroups.com [mailto:b...@yahoogroups.com] On Behalf Of
b...@aol.com
Sent: Sunday, August 12, 2007 12:01 PM
To: b...@yahoogroups.com
Subject: Re: [BasicX] Re: new gyro from analog devices

hey, doesn't the PS3 have gyros in the controller (joystick) if so can they
be hacked ??
.

22304/stime=1186935514/nc1=3848614/nc2=4507179/nc3=4025291>

[Non-text portions of this message have been removed]


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maybe I am confusing a gyro with a accelerometer.


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