Sensors中的主题 Re: PCF 8883

PCF 8883

jangerrits — Mon, 11 Jan 2016 07:40:35 GMT

Hi, I'm currently working on a project for Capacitive Touch-sensor behind a 0.3 mm Steel Cover.

I was wondering if anybody has experience with such a project.

Is the PCF 8883 suitable for doing the job ?

Re: PCF 8883

reyes — Tue, 19 Jan 2016 21:03:06 GMT

Hi Jan,

It should work properly, just an additional recommendation would be to avoid air gaps between the sensing plate and the dielectric (steel cover), in fact, if the sensing plate and the steel cover are touching this will increase the sensing area which means that the sensitivity would increase.

Here are some application notes that could be useful for this application:

AN10832 “PCF8883 and PCA8886 - capacitive proximity switch with auto-calibration” http://cache.nxp.com/documents/application_note/AN10832.pdf

AN11155 “General design guidelines for the NXP capacitive sensors” http://cache.nxp.com/documents/application_note/AN11155.pdf

Have a great day,
Jose

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Re: PCF 8883

jangerrits — Tue, 19 Jan 2016 21:23:50 GMT

Hi Jose

Thanks for your valuable answers it will help us a lot during the project !

Best regards and Have a nice day

Jan

Sent from iPad

Op 19 jan. 2016 om 22:04 heeft reyes <admin@community.freescale.com<mailto:admin@community.freescale.com>> het volgende geschreven:

NXP Community <http://jiveon.jivesoftware.com/mpss/c/-AA/PDcDAA/t.1ty/3bt7M5ChS56s4_IVFJG9WA/h0/eqhG5v9o4WV1pCmWaB03cUjBPgRj-2F3GoJUaXSZ409bQJ6kyiZ2Cef2qt-2B2uYN1YnWHaJNGi7m0dsLcrT7D0aEsRC9ydi8bGmPSoTrNqropzOzEJWlRcWGPjR3DG2V-2Fd9JgazgrYhAttaPsLKIUR-2FzQ-3D-3D>

PCF 8883

reply from Jose Alberto Reyes Morales<http://jiveon.jivesoftware.com/mpss/c/-AA/PDcDAA/t.1ty/3bt7M5ChS56s4_IVFJG9WA/h1/eqhG5v9o4WV1pCmWaB03cUjBPgRj-2F3GoJUaXSZ409bQnFOK00o-2FMItFkXWMeyx-2Fr-2BzmUjde-2BZny2kuFHrzaLsWAu7RZsM-2Bxn7-2B2e2pMMK9A-3D> in Sensors - View the full discussion<http://jiveon.jivesoftware.com/mpss/c/-AA/PDcDAA/t.1ty/3bt7M5ChS56s4_IVFJG9WA/h2/eqhG5v9o4WV1pCmWaB03cUjBPgRj-2F3GoJUaXSZ409bRIkJ0-2FxdZsf4dmjoFWbLvd2wKVAHG46aNpi1j8D3-2BDXOYfaINSEdo-2BM4Kef-2FDFK2Q-3D>