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Capacitive sensor material have to be conductive. It doesn't really matter from what material sensor is made, so long it's conductive. Common conductor capacitive sensing materials include copper, ITO(Indium tin oxide), and silver ink. The resistance is also a big factor when choosing the correct material. ITO for example has a high resistance, which might need a PreScaler, which is used to slow down frequency in the CSD User Module for Capsense to facilitate optimum performance.
Sources
- 2010, Materials used for capacitive sensing http://www.cypress.com/?id=4&rID=36843
Acoustic camera
What is acoustic camera?
Acoustic camera is camera with an array of microphones. Array of microphones is basically a group of microphones. Acoustic illustrates the source and intensity of the sounds.
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