Hi JMC1965,
When You say:
On the breakout board I’ve made the following connections:-
You mean that You take 3.3 volt from regulators on breakboard or from external regulator?
I understand that You connected signal to pull up to 3.3V from on board regulators and
use external 3.3v only for optocoupler.
Is it right?
Thank You for your help ( and patience )
Regards
Antaeus