How to dump serial port output to a memory card for later analysis

Hello,

I am using Teensy 2.0. During lab testing, I can use PC to monitor my serial port information (serial.print) for algorithm development & debugging. However, I am running my code in the field without PC but still hope to capture all serial port print out information so I can analyze later in lab after hooking up PC. I am thinking of SD card for data logging which will involve to buy Micro SD module and need some hardware to be built to interface with the module. I wonder if there is a better way, say, USB interface with Teensy card with external memory, etc, to simplify the hardware development.

Any suggestion is very appreciated!!

Thanks.

Tony

For this sort of application, the open logger from spark fun may be a better solution than a Teensy. It's ready-made, small, and does the job. See the tutorial here:https://learn.sparkfun.com/tutorials/openlog-hookup-guide