Arduino UNO Vibration Analysis HD

Used an Arduino UNO board, ADXL accelerometer, and a serial bluetooth adapter. Arduino program simply prints data from X Y and Z axis to the serial bluetooth adapter, then I import that data into windows via RealTerm software. I then use KST graphing software for the scope and FFT graphing. Both programs are free for windows. RealTerm writes to a windows notepad file that KST graphs the data from. Obviously this will never compare to the amount of precision data that legitimate vibration analysis equipment can provide, but I just wanted to show everyone what a 5 dollar board can do if you put your mind to it! The FFT portion of the graph is extremely useful for seeing vibration amplitude at different frequencies. With that type of info you can factor in your RPM of equipment and actually figure out where your issue is (i.e. a bearing with 30 rollers will take x amount of RPMs on the shaft to fully rotate, so if you have a bad roller in the bearing the frequency it vibrates at will be way different than your shaft RPM).... Enjoy and thanks for watching