I2C Connectivity
The I2C Connectivity displays a “zoom-in” view of the Digital Mass Flow Sensor to the Ardbox 20 Microprocessor. The elements include terminal blocks, jumper pins, 22 AWG wire, 4.7K Ohm resistors and Digital Mass Flow Sensors. Power connections of 5VDC coming from the Power Terminal Block connect to five Digital Mass Flow Sensors, which are then connected to the Ground Terminal Block. Additionally, the five Digital Mass Flow Sensors show the connections of the SDA and SCL Terminal Block to the Ardbox 20 Microprocessor with the 4.7K resistors attached. As stated before, the original design included four Digital Mass Flow Sensors with one mechanical in- line flow sensor. The system now includes an additional Digital Mass Flow Sensor totaling to five Digital Mass Flow sensor.

Analog Connectivity
The figure below displays the wiring schematic for the analog connectivity between the sensors and Ardbox. The replaced pressure transducer or the Honeywell PX2 is shown with its connections to the microprocessors. The use of four Prosense Digital Pressure Transmitters are shown as well that are connected with load resistors to the proper pins found in the Ardbox 20.
