Looked up the ibm patents on capacitive keyboards. I was wrong about the unconnecred pad but still confused why it's there
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Yeah, seems these pcbs have no vias apart from where the controller connects which ig only needs drilling and no plating
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2Makes sense considering it was mostly created to be cheaper tham beam spring keyboards, i don't think there's any other capacitive keyboard with no vias, this indirect coupling prob reduces snr?
