The Wyolum machine ( these are the people who generously offered $3000 in innovation grants , with no strings attached ) is forging ahead with a new and improved version of I2SD . I just received their v3 prototype and it looks impressive. I must say it is the most feature-rich data logger / SD card backpack (here is the list of the competing products that I compared with). Like its predecessor, I2SD v3 is a software-compatible Arduino (ATmega328/16MHz) with extras. It has on-board microSD card, DS3231 extremely accurate real-time-clock with backup battery, infrared receiver and 2 LED indicators for errors or status. I2SDv3 comes assembled (all SMD), with the bootloader burnt in. Sketches can be uploaded through the FTDI connector. The board can be plugged directly into Arduino, using one row of headers (A0-A4-GND-RST), hence the name " buckler " (like a "semi-shield", got it?) I2SDv3 also offers header access to D4-D7 (v2 lacked that; my complaint wa...