Tentacle roles
==============

The `TENTACLE_MCU` has to specify a processor and the intended firmware variants.

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Tentacle role                Comment 
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`TENTACLE_MCU`               A microprocessor tentacle 
`TENTACLE_DEVICE_POTPOURRY`  A tentacle with several devices 
`TENTACLE_DAQ_SALEAE`        Dataaquisition and error provoking 
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