The ASDX sensor of Honeywell exist in many variations. Check the datasheet of your type for all the details. The I2C_ASDX library can read the sensor and give the pressure in millibar, bar or PSI or ...
The I2CKeyPad8x8 library implements the reading of a 8x8 keypad by means of a PCF8575. Smaller keypads, meaning less columns or rows (e.g. 5x4) can be read with it too. Sometimes you need to control ...