This is the set I am buying, but as of now, haven't received it yet. Should be here during next week though.
BlueTooth wireless unit for the head. Around $150
Link to the ProducerFree software to use when using the head for panorama/photo shoots:
http://trac.gbiloba.org/papywizard/wiki/UserGuide2.xRelevant discussions of the Merlin heads:
(and a lot more in the first of the above 3 links)
http://www.brewzone.com/2008/11/diy-pano-headAs you can make off the discussions, the software from papywizard can be run from a Bluetooth compatible laptop or from Nokia internet tablets. The one's used for this are Nokia N770 and Nokia N800. Either one of those can be found on e-bay or other internet vending sites, from around 100 dollars (used) up to the new prices.The VIDEO (youtube)
The head uses 8x AA batteries. 8 batteries last for around 10 panoramas according to what I have been able to figure out by scavenging the net, and that is not enough for professional use. I am thinking about using 2 motorbike batteries (6 volts), serially connect these, have electronic control for the output at max 1000ma, and that should keep the head working all day without running out of energy. To make things even better, I am thinking about getting solar charger panel, that should be able to keep the motorcycle batteries fully charged ALL the time, something like THIS or THAT
As I understand it, the Austrian company might have the head without tripod (less problem/cost for transport) including the bluetooth unit, but without the Nokia and also without the software.
Hopefully people find this info helpful and interesting enough to dig deeper into it. There are other controllers available as well, without the need for the bluetooth equipment or the Nokia tablet or a laptop on-site.
I hope for this to be a good solution, since it allows for gigapanos to be shot as well, and should be good for use in relation to HDR photography. Will make some updates as time passes, and I have had a chance to actually try it out.