hddtemp gives inconsistent values in it's current state, after some debugging I was able to resolve the issue by passing -w to the hddtemp command, this will wake-up the drive if it is in a sleep state to gather information.
I had some issues with the netcat / daemon implementation of the module.
netcat was stallingor sometimes netcat did not return the full output of hddtemp.
Running hddtemp directly without running it as a daemon is much more stable for me.
This new version also does not give any stdout output when hddtemp is not installed or when no disks can be found.
Running the script manually on a server does give stderr output for easy debugging.
