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@aufdenkampe thanks for the info. Neil is doing some amazing things but I have a short timeframe to deploy 10 sites, hence I am opting for the DIY approach. Also, our electrical technician had around 40 PCBs printed by DFRobot, so I have most of the DIY components at my fingertips. I just have to wade through the unreliable adapter board issue.
I’m not sure what you mean regarding not soldering anything into the wingshield. The TTL RS485 adapter seems to be soldered to the wingshield in the image below?
FYI I have had success talking to my Y511-A turbidity sensor. Do you know if the issues with the brush interval have been fixed, I.e can you set the brush interval to save power, or does it just default to every time the board fires up?
James