Now the velostat sensor is the sensor design of choice, experiments began.

Based on research, the first sensor design is based around copper tape tapped onto each side of a piece of velostat, with an outer layer of neoprene.

However, this did not show consistent results, or show any clear resistance change that would indicate touch.

Then, another sensor was developed, where both pieces of copper tape were taped onto the same side of the velostat sheet. This sensor also, showed the same problem.

Then, a sensor was designed to have the velostat tapped to the copper, with the bare copper side directly touching the velostat instead of relying on the ‘conductive’ tape on the copper.

This sensor did show perfect representation of the pressure as part of a potential divider circuit.

This showed the velostat could perform in the role required and indicated the copper tape was the issue and not the velostat itself.

Then, a velostat sensor in the more conventional method of copper on each side was used, but the copper facing inwards. This also worked perfectly.