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« on: April 23, 2014, 08:20:52 pm »
When you say power for the expander board - what I am trying to understand is whether you mean power just for switching to the zone outputs OR power to actually run the expander board logic ?
Because, if the power pin 1. is just supplying the 24v AC to the zone outputs this is ideal as it would allow presumably variable voltage and also DC to be switched to the zones if the expander board logic is actually powered from the main board of the bluespray. This would seem to make sense as you then only have to rectify the AC power to DC and regulate to the right logic voltage level once.
rgds,
Seedar.