Yoctopuce YHUBSHL1, Руководство пользователя

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3. Connections
6 www.yoctopuce.com
You can chain several YoctoHub-Shields.
You do not need to put the YoctoHub at the end of the chain. Note, however, that the YoctoHub-
Wireless has a small design flaw: a tiny capacitor prevents you from pushing down completely the
Picoflex connector on one of the headers. Use the other header or take a cutter to notch the ribbon
cable connector.
Since the YoctoHub-Shield allows to build huge stacks of devices, it's tempting to have several
projects running at the same time on the same shield stack. However, a Yoctopuce hub is able to
manage only 8 connections in parallel. An application using the Yoctopuce API to access a hub
needs 2 connections, the first one for the set/get functions, and the second one to manage callbacks
and plug-and-play events. Therefore, you can have up to 4 applications talking to a hub at the same
time. Trying with more will cause a many connection errors. The VirtualHub counts as one
application.