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Sensor Size and Design

When designing painted sensors with Electric Paint to attached to the Touch Board there is a basic rule of thumb that can help. The size of the trigger (i.e. your hand or finger) should be relatively large in comparison to the sensor. This rule can be broken when doing touch sensing, but is more important to note when designing large proximity sensors. By hatching the sensor, instead of filling in the whole shape, you keep the amount of conductive matter low in comparison to the trigger but at the same time keeping the sensing area large. That said there is no better way then experiencing this correlation by painting several different sensors and testing their behaviour.

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