Combine a Yocto-Altimeter with a YoctoHub-Ethernet to get an autonomous appliance with built-in network connectivity:
The Yocto-Altimeter device is a USB altimeter : it will give you an altitude estimate based on atmospheric pressure. The Yocto-Altimeter is precise enough to detect 25cm 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.
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The YoctoHub-Ethernet is a Fast-Ethernet module that can host three Yoctopuce modules to access them remotely. It can be powered either by a USB Micro-B cable, or directly from the Ethernet cable (PoE compatible with 802.3af standard).
Three Yoctopuce modules can be connected directly, one of which can be fixed directly on the YoctoHub-Ethernet and connected using a Board2Board-127 connector. More devices can be connected thanks to the YoctoHub-Shield extension. The YoctoHub-Ethernet can power Yoctopuce devices up to 2A.
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