Slight clarification guys so just incase someone reads this they dont make any mistakes.
Yes the X-Drive can work with case + diodes.
However if the diode is case + you must
Isolate the diode from the case if you do use an X-Drive for a Case + diode as the X-Drive does not have a continuous + line going straight through. Being that you are using a C-Mount diode in that CNI module it is nearly impossible to do this without having to mess with alignment. In other words it is not worth the trouble.
So in your case it is not possible to use it.
A AMC Driver should be just fine. IN fact it is what some of the RPL's use.
I did make a round AMC driver for a couple builds and its designed for a Case + setup.
Unlike The Cheap AMC drivers you buy from DX or something they are setup for it to run case - when you put the battery in as the outer ring is CASE- on the driver and the spring in the center is +.... So if you go with this driver you will need to isolate the outer - ring from your case.(Like jay did in his C-Mount 650nm build)
http://laserpointerforums.com/f50/c-mount-red-mag-stubby-build-84462.html
On my AMC round driver the center spring pad is - and the outer ring (Or should i say the outer 2 pads on the inside of the board) connection is +. So its setup to put the battery in too as Case + so no need to isolate anything.
You can see the AMC driver here that i made:
Now i dont really sell these but i have a couple blank boards still left here if you want i can make you one for say $10. (its more expencive when you buy the chips in only 100pcs packages) Though my driver only has 6 AMC on it and if we use the 380mA chips that will get you ~2.3A..
CNI Diodes are either 2W or 3W for refrence in that module you have.
2W Runs at 1.8A +/-100mA
3W run at 2.2A +/- 100mA
I Pm'ed you for your other question you asked me about in PM so let me know then if you want it.
Or you can save a few bucks by getting the Other board version and just isolating it from the case.
It be the same thing.:beer: