Tools@hand fabrics by Micah Schippa
USB Hourglass random number generator by John Park
“It watches falling sand in an hourglass with an optical sensor. That data is sent via the Arduino USB output to the PC where it’s analyzed. This entropy is useful for all your random number needs. My favorite part: when the hourglass runs dry a servo motor flips it over and it starts again.”
via Boing Boing
this might have just replaced the lava lamp (LavaRnd) random number generator as my favorite RNG ever. for those playing at home, it’s now