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USB barometric altimeter with integrated data logger You can add Ethernet, Wireless or GSM connectivity to this device.
The Yocto-Altimeter-V2 device is a USB altimeter : it will give you an altitude estimate based on atmospheric pressure. The Yocto-Altimeter-V2 is precise enough to detect 10cm altitude changes. It will also give you the current pressure and temperature. Data can be recorded on the internal flash memory, in order to build a data history that can be retrieved later on over USB.
This circuit has been designed so that the sensor itself can be moved further away from the USB connector by a few meters: simply split the board into two parts and solder a 4-wire cable on the designated pads.
This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub-GSM.