Multiple Sensor Board

Hi guys, I have a project that needs multiple sensors like pH Sensors, 2 temp sensors, and ultrasonic sensor. I created an interface board for them. Will there be a complication with the multiple sensor, because my pH sensor had different value when sensing together with the other sensors, unlike when I use it alone i have the desired value. Thank you! Attached below the circuit board that I created.

What sensors?
How are they connected?
What has that board layout got to do with anything?

In general each sensor will be connected to a different input, either analogue or digital depending on the sensor. That is why the sensor’s outputs do not get mixed up.

Please post code, details of sensors (links to data sheets), circuit diagram, actual outputs.