Arduino USB Host Shield V 2.0 (ADK for Arduino) Wireless RF Kit 433 Mhz They are all designed to

They are all designed to measure Barometric Pressure or Atmospheric pressure

CD4512 - 8 Channel Data Selector

and also for home repair

Board Dimensions (L x W) :174mm x 66mm

Both processors share all the in-chip peripherals and can run:

Arduino USB Host Shield V 2.0 (ADK for Arduino) Wireless RF Kit 433 Mhz They are all designed toIntroduction : USB Host Shield is an add on board for Arduino development platform. The shield provides USB Host interface, allowing full and low speed communication with USB devices keyboards, mice, joysticks, MIDI, digital cameras, Bluetooth, and many others. Thanks to new interface layout it is now compatible with more Arduinos not only UNO and Duemilanove, but also big Mega and Mega 2560 work with Standard variant of this shield out of the box. No