I am doing a project using Arduino Uno and ADXL 345. I am quite new to this and I came across this post in the link" : https://www.sparkfun.com/tutorials/240. Here, a user had posted the below question in the forum.
"Im trying to use this accelerometer to test various frequencies of vibration on a cantilevered beam and I wanted to know what the maximum vibration frequency I could find with using this accelerometer, connected to a 16MHz processor, connected to my laptop. I’m mainly a mechanical person, but after doing some research I found the following: Accelerometer has a maximum of 3200Hz output data rate (so maximum frequency would be 1600Hz) Processor can execute 16,000,000 instructions/sec so this probably is okay Communication rate is 9600 bits/sec so in the program above we read at a minimum 6 bytes for each axis, so that’s 24 bits, leaving you able to read 9600/24 = 400 reads/sec resulting in a one to be capable of reading vibrations at 200Hz. If I bump up the baud rate to 115200, I should be able to then read 4800 times a second, thus measuring 2400Hz vibrations?"
But I do not see any replies to this question. I feel the above analysis mostly makes sense. It would be helpful if someone could confirm that the above analysis is right. If not right , then why isn't it right?