Plans for uploading reference design for Capactive Touch applications?

RE: Plans for uploading reference design for Capactive Touch applications?

MartinBL — Mon, 22 Jan 2018 18:53:34 GMT

I suppose measuring the capacitances is useful, but I guess each sensor needs to be calibrated in software at application startup anyway (and probably every once in a while after that).

In MyPage we are happy to do review of components and design directly related to our ICs, their matching network and antenna.

RE: Plans for uploading reference design for Capactive Touch applications?

MANGO — Mon, 22 Jan 2018 16:30:26 GMT

Thanks for your time, Martin. I am referring other vendors' capacitive touch PCB designs.

One of the concern is that I don't have tools to measure Parasitic Capacitance and SNR after creating a capacitive touch PCB. Additionally, I was doubtful whether I can receive supports if I open a "MyPage Case" later on. So I was hoping to see a reference design from Nordic.

4th quarter of 2018 / 1st quarter of 2019. Plus, this is not an urgent project for me. So I thought maybe there could be some timeslots to both of us; me working with capacitive touch / devteam fixing the erratum 84 or creating a reference design.

Although you cannot assert the revision plan for erratum 84, hope to hear a plan for that later on. Also, does Nordic accepts this type of "MyPage Case" support?

-Regards, MANGO

RE: Plans for uploading reference design for Capactive Touch applications?

MartinBL — Mon, 22 Jan 2018 12:49:56 GMT

Hi,

The Touch sensor PCBs used in the blog post were not made by Nordic. If you look at the images you can google their serial numbers to find them. Not sure if you will find layout files though.
Unfortunately there are no immediate plans of fixing erratum 84. We recently released a second revision of the nRF52832, but other errata were prioritized.
As mentioned the PCBs weren't our designs, but I'm sure you will find other layouts and tutorials online showing you how to make touch buttons.