This is my fairly simple set-up:
...all works well at first but the Raspberry Pi drops the USB connections somewhere between 1-3 hours. It seems that most of the time it drops all 3 but sometimes 1 or 2 will remain connected.
I have made 3 x VE.Direct connections from USB Serial cables to JST connectors
Link to USB Serial: https://www.amazon.co.uk/gp/product/B0B7F72WVW
For the MPPT & SmartShunt outside, I have spliced the connections into a 6-core cable to pass through the wall. In total the length of run is about 3-4m and the run to the Inverter is about 60cm.
Reading similar issues on these boards, I thought it might be not enough power on the USBs so I added a good quality USB hub but I'm having the same issues.
Have I stretched the connectivity with the Raspberry Pi beyond reasonable limits and should I just bite the bullet, buy the Cerbo GX, and run VE.Direct connectivity skipping the USB completely, or will this be subject to the same fragility?
Many thanks