G'day! I was able to connect RPi to MPPT 75-15 via VE.Direct to USB successfully, but following the Q&A on below page, I could not get RPi to recognise MPPT on pin 6, 8, 10. I have used a simple BSS138 based bi-directional level-shifted 5V from MPPT end to 3.3V RPi GPIO. Are there any other settings that have to be done on the RPi side? Any light from someone resolved similar issue is much appreciated!
Components: Raspberry Pi 3 B+ with Venus OS v2.62, MPPT 75/15 v1.54