The touch sensor panels are passive PCB’s, which contains the touch sensors
that connects to the touch acquisition channels on the Touch MCU boards. The
touch sensors are available on a standardized card-edge connector and the
board is connected to the Touch MCU board using a flex cable delivered with
the kit.
See schematics for the QT600 MCU boards:
The card-edge connector has a standardized numbering fro the touch
sensors, with touch channel 0 starting on card-edge connector pin2, touch
channel 1 on pin 4, and so forth. For QTouch tm technology the sensor board
will not require any components, while for QMatrix tm must have resistors
between the X and Y lines connected to the sensors. To create a new custom
touch sensor board that can connect to any of the existing QT600 MCU boards,
add the card-edge connector and connect the sensors according to the above
mentioned numbering scheme.