I have got data coming in from serial output, brainwaves, through an arduino uno, being graphed in proccessing. I really need to know how to write the incoming data to a .txt file for use in matlab. the data is being printed in the proccessing window in the form

I need it exported to a .txt file in the form

51,0,0,535974,452180,176756,51753,264251,149330,47979,126161

followed by a line of the next 10 values.

Any help would be extremley helpful and i would be very grateful

Andy