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PSoC 4 MCU

StPr_4549631
New Contributor

Hi all,

I'm currently looking for a solution to implement a capacitive sensor for a series of wearable devices comparable to ear buds. The product should support a capacitive touch slider with button press for user interaction. At the same time it should be possible to detect if the device is being worn by the customer via a capacitive touch sensor. 

Could you please recommend a suitable IC that can fulfill both functions at the same time?

We have been using the CY8C4014FNI-421AT for capacitive touch sensing (slider and button press) in the past and are very satisfied with the results. Could this IC also be used for the new application?

Thank you!
Stephan
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1 Solution
LinglingG_46
Moderator
Moderator

My advice is based on your specific product requirements. In this case, you provide too little information.

1: The first of all, What specific functions do you want to implement? Please describe in details.

2:It depends on the function you want to achieve about Whether to use the proximity function.

3:  What do you mean about the slider sensitivity and electrodes used for the on the head sensing? Which target you used to compare with the slider? The typical application for slider is that used for position detection.

Please refer to the following documents to have a new CAPSENSE design:

1:https://www.cypress.com/documentation/application-notes/an64846-getting-started-capsense

2:https://www.cypress.com/documentation/application-notes/an85951-psoc-4-and-psoc-6-mcu-capsense-desig...

 

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4 Replies
LinglingG_46
Moderator
Moderator

Yes, CY8C4014FNI-421 can be used for the new design.

 

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StPr_4549631
New Contributor

Hello LinglingG_46,

Thank you for your feedback. For the touch slider we foresee three Capsense electrodes. Could you please advice how the on the head detection could be implemented? Is this a proximity sensing application? 

Also, is it possible for the touch slider to have a different sensitivity than the electrodes used for the on the head sensing? Or would that require a second engine?

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StPr_4549631
New Contributor

Hello LinglingG_46,

Thank you for your feedback. For the touch slider we foresee three Capsense electrodes. Could you please advice how the on the head detection could be implemented? Is this a proximity sensing application? 

Also, is it possible for the touch slider to have a different sensitivity than the electrodes used for the on the head sensing? Or would that require a second engine?

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LinglingG_46
Moderator
Moderator

My advice is based on your specific product requirements. In this case, you provide too little information.

1: The first of all, What specific functions do you want to implement? Please describe in details.

2:It depends on the function you want to achieve about Whether to use the proximity function.

3:  What do you mean about the slider sensitivity and electrodes used for the on the head sensing? Which target you used to compare with the slider? The typical application for slider is that used for position detection.

Please refer to the following documents to have a new CAPSENSE design:

1:https://www.cypress.com/documentation/application-notes/an64846-getting-started-capsense

2:https://www.cypress.com/documentation/application-notes/an85951-psoc-4-and-psoc-6-mcu-capsense-desig...

 

View solution in original post

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