The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface. The ADXL345 is well suited to measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than 1.0°. Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. An integrated, patent pending 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor intervention. Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.
Features:
Ultralow power: as low as 40 μA in measurement mode and 0.1 μA in standby mode at VS = 2.5 V (typical)
Power consumption scales automatically with bandwidth
User-selectable resolution :
Fixed 10-bit resolution
Full resolution, where resolution increases with g range, up to 13-bit resolution at ±16 g (maintaining 4 mg/LSB scale factor in all g ranges)
Embedded, patent pending FIFO technology minimizes host processor load
Tap/double tap detection
Activity/inactivity monitoring
Free-fall detection
Supply voltage range: 2.0 V to 3.6 V
I/O voltage range: 1.7 V to VS
I2C interface
Measurement ranges selectable via serial command
Bandwidth selectable via serial command
Wide temperature range (−40°C to +85°C)
10,000 g shock survival
Documents:
Schematic: http://www.flytron.com/pdf/ADXL345_schematic.pdf
Datasheet (ADXL345): http://www.flytron.com/pdf/ADXL345_datasheet.pdf
Example Code (Arduino): http://www.flytron.com/pdf/ADXL345_example_code.zip
Price is US$ 24.95 (on sale, might not take long)
More information at the Flytron website: http://store.flytron.com/sensors/143-adxl345-accelerometer-breakout-board.html
Comments
I like this type of post. I find it useful. The context seems clear to me.
I feel that it is a little bit unfair for 3drobotics dealers and hardware designers to make negative comments. It seems there is conflict of interests :) Not being rude, just giving my opinion.
I will, as soon as the 3 products in my Flytron posts are mated together there will be a 9DOF product that I will use with my OpenLRS transmitter.
In my opinion, I think other people are interested in this kind of products too and Flytron is not a site where you look every day. If I hadn't posted about it, someone else would. I should have wrapped the 3 products in 1 blog post though.
Lesson learned!
Hi CrashingDutchman, if you want to post these without us sending negative comments just make sure you wrap them in a nice DIY way... build something with them, show some implementation and how it could relate to us... not just posting an add for product for sale... put context around it and we will feel better.
The main point here is to collaborate together to evolve our hobby.
I understand your concerns and I acknowledge them. Also, Chris mailed me about this. The only reason I posted these is that Flytron is doing good work for the Open Source (see their OpenLRS transmitter which the products I posted about can work with).
someone approved the post... Chris is too busy in preparation for London? let's try a military post! :)
I am with you Randy, this is not why I visit this great community/website.
hmm...yesterday it was a barometer, today it's a 3d accelerometer. Not sure this post is adding much value to the community. Looks like a plug for flytron and not even vaguely dressed up.