This is just prototype of hi-hat controller. But I think that you can probably use it with many sound modules. I do not have Roland or Yamaha's cymbal pad so I have not tested it in combination.
I tested it with Roland's TD - 10 and it worked.
Now I am designing a cymbal pad so when I finish I will share it with a new controller.

Anyway, this is a prototype.
Perhaps depending on the shape of Jack, you may have to cut a part of the model.

This project is under development. I will release the detailed production process on this blog.
https://open-e-drums.tumblr.com/

Appropriate sponge foam
6.3mm audio jack
FSR - https://www.adafruit.com/product/1075