LEGO PF elements now avaliable
LEGO Shop-at-Home has updated their products recently. Perhaps most interesting there are some new PF elements among them, as well as the existing PF motors but you can now buy them on a "piece by piece" basis. It seems there is also a "hybrid" PF cable, that appear to function as both a PF extenssion cable as well as a cross-over cable to the older 9V system. The grand Technic Bulldozer may not be available... but at least now all the PF parts are (they've also been added to LEGO Digital Designer for that matter. It appears I need to browse S@H more often... and after I already put in my last order, too. Oh well, perhaps I need another order... For folks wanting new sensors, there's a lot of offerings at S@H as well: the standard four (US, light, sound, & touch), but also the Acceleration, IRSeeker, IRLink, Gyro, Color, & Compass sensor.
The hybrid cable seems like a better solution in the cases where the PF motors and the NXT brick are components of the same robot.
I suppose that the hybrid cable could be connected to a NXT converter cable ( supplied with the EDU Base Kit) so that that the NXT brick can operate the PF motors. Of course, a custom NXT-G block would have to be made available...
I wonder if that type of configuration would offer a little more control of the PF motors then the IR Link solution. I.E. with the IR-Link there is a bit of a latency between running the PF motors and stopping them even when you place a PF stop command block directly after PF run block.
There have been some really good reviews on the PF motors from bluetoothkiwi et al.
try googling ( bluetoothkiwi and pf )
I didn't try it but it should be possible to do this (using two converter cables) and this will make the latency problem go away. You should also be able to adjust the power to the motors. I don't think it will require a new block; the block that allows you to use legacy 9V motors should be fine for this.
I just tried it and it worked beautifully! I used two cables...the NXT converter cable and the hybrid cable (I had it in my Science and Tech Kit from LEGO Education). I used the legacy 9V motor block.
Anyhow, I'm not sure how much of a lag time you were seeing w/ the IR system but this seems great to my non-engineering mind.