I don’t have a schematic right now, and I don’t have time for it as I have to show a working project next week, the schematic and other documents will be done later. It is wired correctly, as I tried the same wiring but with other ports and components off, only the sensors were turned on and displaying their values which went correctly. Basically I am using 12V 6A DC PSU to power Arduino and other 12V components, then it is run through voltage step-down to 5V on a breadboard (it is also connected to Arduino GND just in case), from which I run 5V components. Board is UNO R3. I can post the code later today, but wanted to make this thread now as someone might have had similar issue and will be able to tell right away. Also, I tested the WL converter output for Voltage in the circuit while everything was running, and it did output correct values (~3V when dry, and ~0,4V when wet), but the Arduino just wont read it… Same for SM’s, but with Analog values…