74HC195 is High-Speed CMOS Logic
Working voltage DC12V Maximum current 500 mA Operating Mode Normally Closed Inlet/Outlet Ports external diameter 3/4"(19mm) Materials Stainless Steel/Polyoxymethylene Filter Screen Stainless Steel Inlet Filter Temperature Limitations Maximum Fluid Temperature 120°C Pressure 0
It is commonly used with Future Electronics Egypt 8mm shaft to provide linear motion in horizontal direction
it can detect up to 15 gestures
The Arduino Site: "1-Wire" information
Piezo Sensor Element 27mm 74HC573 74HC195 is High-Speed CMOS LogicPiezo element is a sensor which is used to detect vibration, in this case, a knock on a door, table, or other solid surface. A piezo is an electronic device (sensor) that generates a voltage when it's physically deformed by a vibration, sound wave, or mechanical strain. Similarly, when you put a voltage across a piezo, it vibrates and creates a tone. Piezos can be used both to play tones and to detect tones. For more information on piezo electric