TP229 I2C Module has 16 capacitive inputs and gives you the ability to use the Keypad Capacitive Touch 16 keys of RobotDYN without wasting a lot of input pins from your microcontroller.
with this module you will be able to use the i2C Protocol to read your Keypad Status and Know what has been pressed, The module has two working modes. Module use only 16 key modes. For connection to microcontrollers (Arduino, Raspberry, STM) use the I2C interface.