The USB Hourglass combines a sand timer with a rotating mechanism and an optical beam through the center of the timer to observe the falling sand. The amount of light reaching a detector is digitized at frequent intervals and processed by a microcontroller to determine when to rotate the hourglass. The digitized light levels are also sent by USB to a host PC where they can be used as a source of random entropy. Power is supplied over the USB cable.
Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to take the step from physical prototyping to actual product. We are creating this software in the spirit of Processing and Arduino, developing a tool that allows users to document their Arduino and other electronic-based prototypes, share them with others, teach electronics in a classroom, and to create a pcb layout for manufacturing.
Make your own Arduino Shield. This is Coool.
之前看過這個東西 不過沒啥感覺 星期一把機器送去xx醫學院後 這兩天又看到這個報導後 忽然覺得自己的機器像恐龍時代的東西 因為Michelle提到 實驗需要用到的Reagent的量因為吸管的限制 因此Reagent量都很大(幾10到幾百uL) 如果有像上圖的東西的話 量的需求就很少 同樣的Reagent可以做的實驗比較多 實驗規模也小很多 這些話讓我聯想到IBM 360 vs Apple II的故事
"For the past 25 years, engineers—myself included—have been trying to suppress vortex induced vibrations. But now at Michigan we're doing the opposite. We enhance the vibrations and harness this powerful and destructive force in nature," said VIVACE developer Michael Bernitsas, a professor in the U-M Department of Naval Architecture and Marine Engineering.
Fish have long known how to put the vortices that cause these vibrations to good use.
Recent Comments