The main purpose of the card is to work as an USB memory.

The firmware uses the internal flash of the microcontroller, so the capacity of the mass storage unit is only 24 KB max. Enough to put a cover letter and resume in HTML.
If more memory is needed, the current PCB and circuitry supports an external 8-pin SPI (or I2C) flash memory chip (up to 32MB!). Interesting for providing the project documentation or code!


In addition, the microcontroller firmware includes a bootloader that allows you to run small programs stored in the USB drive. These programs add functionalities to the card.

At the moment, the following applications are available:

* Datalogger:
Capture digital signals. Capturing modes (without compression / worst case):

o 8 channels @ 500KHz
o 4 channels @ 1MHz
o 2 channels @ 2MHz
o 1 channel @ 4MHz.

* Oscilloscope :
10 bits of resolution. Capture modes:

o 4 channels @ 67.5KHz
o 2 channels @ 125KHz;
o 1 channel @ 250KHz;