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Expander pi would not function on 1-wire pi plus

The Expander Pi is an Analogue, Digital and RTC development Interface for the Raspberry Pi

04/09/2015

Posted by:
altiw001

altiw001 Avatar

Hallo,
es steht in dem Datenblatt, dass expander pi nicht mit 1-Wire pi kompatible sind aber nichts von 1 wire pi plus.
ich habe festgestellt, dass der expander pi sich nicht meldet wenn ich ihn auf dem 1 -Wire pi plus stecke. ich benutze den Raspberry pi 2.
Als ich eine ältere Version des Raspberry pi benutzte hat sich doch der expander pi gemeldet.
woran kann es liegen?
mit freundlichen grüße

04/09/2015

Posted by:
andrew

andrew Avatar

Hello altiw001, the 1 Wire Plus uses the same circuit as the 1 Wire Pi and so they are not compatible with the Expander Pi due to the pull-up resistors on the 1 Wire boards being too low of a value to work with the level shifting chip on the Expander board.

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