Capsense using spring

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BhSa_4078721
Level 2
Level 2
10 replies posted 10 questions asked 5 replies posted

Hi,

I came across the method to implement the capacitive touch using spring as a capsense sensor.

Can I get the any reference document to select the spring specification such as spring dimeter, spring height, thickness of metal spring, turns in spring.... and how it basically affect sensitivity.

I want to achieve sensitivity over 7mm thickness(4mm overlay + 3mm spacer) with around 12mm sensor area & 5mm distance between two sensors. There are multiple sensors on same board.

recommendation for selection criteria of spring would be highly appreciated.

Thanks in advance.

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1 Solution
BragadeeshV
Moderator
Moderator
Moderator
First question asked 1000 replies posted 750 replies posted

Hi BhSa_4078721​,

Please check the spring section in Pg 115 in Getting Started with CapSense application note for the guidelines to design CapSense sensors using springs

https://www.cypress.com/file/41076/download

Regards,

Bragadeesh

Regards,
Bragadeesh

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2 Replies
BragadeeshV
Moderator
Moderator
Moderator
First question asked 1000 replies posted 750 replies posted

Hi BhSa_4078721​,

Please check the spring section in Pg 115 in Getting Started with CapSense application note for the guidelines to design CapSense sensors using springs

https://www.cypress.com/file/41076/download

Regards,

Bragadeesh

Regards,
Bragadeesh
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Hi,

Thanks for the reply.

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