The well known resistive pressure sensor made with velostat, but now with a twist: the same sensor can also be used to measure presence using capacitive sensing. By combining both sensing methods, the same hardware can work both as distance sensor and pressure sensor! We will briefly cover resistive sensing and capacitive sensing and then get our hands dirty by making such a sensor ourselves.
The workshop assumes you are familiar with Arduino and basic electronics such as a voltage divider.
Image from 2017 Pressure and Presence Sensing Workshop at eTextile Summer Camp 2017