Hi,
I don't understand clearly your problem.
But if you think that's the problem might be about using Pduino firmware, you sould try "Tata" firmware from Thomas Ouellet Fredericks, and see what happens : http://wiki.t-o-f.info/index.php?n=Tata.Tata
Just a suggestion.
Best,
-- Jérôme Abel http://impala.utopia.free.fr