Hewlett-Packard Development Company, L.p.

Mark Jon Westlund

Duane A Koehler

Algird M Gudaitis

Jerrod Houston Tyler

Ed Tucker

David J Gembala

An example system includes a primary device and at least one auxiliary device connected in series with the primary device. The auxiliary device has an identifier indicative of a position of the auxiliary device in the series. The identifier is based on a resistance value associated with the auxiliary device, the resistance value being based at least in part on an upstream device in the series.

Auxiliary device identification

A circuit includes a capacitive-type humidity sensor. The circuit provides start and stop signals to a processor in accordance with a charge voltage across the sensor. The processor performs a counting function to derive an integer count value in response to the start and stop signals. The processor uses the integer count value to determine parameters for controlling an ink-jetting print engine. Printing speed can be controlled in accordance with ambient humidity and/or temperature so that the printed media are sufficiently dried before handling by a user or other operations.

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Vancouver, WA, United States of America

Mark Jon Westlund