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PSoC™ 4

jcsb1994
Level 4
50 sign-ins 25 replies posted 25 sign-ins
Level 4

Hi all,

I am trying to optimize the resolution of a capsense board I have that works with a 5 by 8 CSX matrix. It works very well, with dimensions of 2.5mm electrode side length, and 0.5mm gap between each electrode

jcsb1994_1-1622836584011.png

 

jcsb1994_0-1622836391961.png

I plan on turning this into a 6x9 matrix, but I am unsure about where I should cut first:

1. should I keep the electrode size to gap distance ratio the same (i.e. make the electrodes 2mm side length and the gap 0.4mm)

2. Or should I instead reduce mainly the electrode size (i.e. 1.8mm side length with the gap kept at 0.5mm)

3. Or else should I try to optimize the electrode size and reduce the gap between them? (maybe 2.2mm side length with 0.25mm gaps)

If you can explain why one is favorable over the other, it would be perfect!!

I am asking this because I did not find any guidelines in the capsense design guide specifically for these dimensions. Please refer me to any doc if you think of any

Thank you!!

 

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1 Solution
LinglingG_46
Moderator
Moderator 750 replies posted First comment on KBA 500 replies posted
Moderator

It is recommend that reduce the gap  to 0.15mm, Others are equally distributed to the length of the side.

Generally, we recommend the following sizes to our customers:

LinglingG_46_0-1623210940674.png

 

 

 

 

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4 Replies
LinglingG_46
Moderator
Moderator 750 replies posted First comment on KBA 500 replies posted
Moderator

It is recommend that reduce the gap  to 0.15mm, Others are equally distributed to the length of the side.

Generally, we recommend the following sizes to our customers:

LinglingG_46_0-1623210940674.png

 

 

 

 

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jcsb1994
Level 4
50 sign-ins 25 replies posted 25 sign-ins
Level 4

Thank you, you answered my question, however I was wondering what do you refer to as "bridge width?"

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LinglingG_46
Moderator
Moderator 750 replies posted First comment on KBA 500 replies posted
Moderator

Please check the previous response: bridge 0.1mm-0.15mm.

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jcsb1994
Level 4
50 sign-ins 25 replies posted 25 sign-ins
Level 4

@LinglingG_46 wrote:

Please check the previous response: bridge 0.1mm-0.15mm.


I meant what does bridge mean, but I finally found it meant solder mask bridge. thanks.

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