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Topic: Need Help with ADXL 377 reading speed (sample rate) (Read 34 times) previous topic - next topic

chase_yuan

Oct 21, 2014, 09:37 pm Last Edit: Oct 21, 2014, 09:42 pm by CrossRoads
Hi, Everyone!
How many readings per second I can get the most theoreticallyfrom Arduino UNO with ADXL 377 sensor ?
Can I self replace the capacitors on the ADXL 377 sensors to achieve higher bandwith?or Can I order a customized accelerometer sensor from Ad fruit here? I want to have a high frequency sensor.
Thanks for reading my post and making any comments and suggestions.
[font/color nonsense cleaned up by moderator]

CrossRoads

#1
Oct 21, 2014, 09:48 pm Last Edit: Oct 21, 2014, 09:50 pm by CrossRoads
http://www.analog.com/static/imported-files/data_sheets/ADXL377.pdf
As the output is 3 voltage levels and not serial data in some format, I suppose you could use the internal ADC at ~ 3,300 10-bit samples of each channel per second.
Re: caps: probably.
"The user selects the bandwidth of the accelerometer using the CX, CY, and CZ capacitors at the XOUT, YOUT, and ZOUT pins. Bandwidths can be selected to suit the application, with a range of 0.5 Hz to 1300 Hz for the x-axis and y-axis and a range of 0.5 Hz to 1000 Hz for the z-axis."


Re: getting customized part from adafruit: not likely, but you can certainly ask.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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