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Re: [Paparazzi-devel] Airspeed_ETS on Lisa/m 2

From: Tilman Baumann
Subject: Re: [Paparazzi-devel] Airspeed_ETS on Lisa/m 2
Date: Thu, 13 Sep 2012 23:35:46 +0100
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On 13/09/12 23:20, Tilman Baumann wrote:
The Eagletree Airspeed module is VCC +5V (And subsequently the i2c levels I suppose)
Lisas i2c(2) port is +3.3 volt though.

Has anyone done this before? Does the ETS module perhaps run on +3.3V? Or do I need to buy a level converter? Any tips which chip I should use? (nice and small SOIC package with few external parts so I can do dead bug style construction on the connector)

Oh well, that one was easy. If I need a level converter, the TI PCA9306DCTR seems to do the trick nicely. Just needs two pullups and a filter cap.
Will I need to do this?

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