Quote:The advice does help, I'm usually trying to use the tip of my thumb (partly to avoid fat-fingering the center button), though I'm still finding the sensitivity rather low even if I use the pad of my thumb, I still have to press more than I'd like to get it to be reliable
We've recently merged a PR to make accidental centre button triggers less of an issue when scrolling (thanks again schrockwell!)
Quote:(I remember reading your campaign update about that, pretty neat stuff)
Aw thanks, I'm glad to hear it

Quote: I'm mainly wondering if it could be related to something like the distance between the touch wheel's cover and the PCB
It's possible, there is a bit of tape between the touch wheel cover and the PCB to help secure it, though we use a thin tape and put it in the "cat ears" corners to try minimise sensitivity loss. It's worth having a look if perhaps the tape is folded over itself making it a larger gap than it should be. Not all units got this tape though, so there's the possibility it's not there to begin with.
Quote:Just makes me wonder though, is it possible to adjust the sensitivity of the touch sensing in the firmware? Like, somewhere in the code to mess with, that would be interesting for me to play around with
We use a AT42QT2120 (data sheet can be found here: https://www.microchip.com/en-us/product/AT42QT2120) set to wheel mode. I'm not entirely sure if writing a lower threshold to the detect threshold register (5.16 in the datasheet) will affect the sensitivity when also set to wheel mode, but that is where I would start.