@neilh20, yes all setups are the same. Some work fine, others have issues with dropping out. I have spare Mayflies and a spare CTD, but no spare turbidity sensor. Did you ever end up producing your Mayfly wings for the 0.5? This might just be another case of rubbish RS485/ttl’s.
I kinda wish my project was delayed by six months so I could get the version 1.0’s with the new modbus wing!