Just got this in an email and it looks pretty interesting, particularly as it’s DIY friendly.
Coming Soon To Kickstarter
On September 16th 2019 we will be launching a Kickstarter campaign for an exciting new family of touch sensors that work with Bela and other maker platforms!
Mark your diaries for September 16th 2019 when we’ll launch our new set of tools which make it easier than ever to integrate touch sensing into your music, art and interactive projects. In the meantime stay tuned for more details.
See you on Kickstarter! <3
The Bela Team
Also from the github it looks like it speaks i2c: