12 Appendix: QT2 Surface Sensor Design Specifications
The QT2 Xplained Pro features a 4 x 4 mutual capacitive touch surface. The sensor nodes for the touchpad are formed using the Flooded-X design layout. The QT2 Xplained Pro touchpad can be used as a touch surface, and it can also be configured as a 4 x 4 button array.
| Parameters | Value |
|---|---|
| Row pitch | 7.5 mm |
| Column pitch | 10 mm |
| Y-electrode width | 0.5 mm |
| YY separation | 4.5 mm |
| X-electrode width | 8 mm |
| X-electrode spacing | 2 mm |
| Front panel thickness | 0.5 mm |
| Front panel material | Lexan (PC) |
