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Do you mean questions about this driver or questions in general ? Because I always have questions ! lolYou are welcome, Accutronitis. It sometimes takes me a day to respond to questions, so don't feel I'm snubbing you if you have more questions.
First, I'm assuming that you have a dead laser pointer and are trying to replace the laser diode and the driver. All the Thor M2 lasers I found were around 455nm, but the power output is different depending on which one you buy. Wiring a blue diode with the case positive is unusual, but no reason you can't do it that way. Personally I'd leave the case pin floating and not connected to anything at all. Is the driver in the photo the same one used in the original laser? If not, it might be too large to fit in the confined space you have in the host. If you are using a diode from a ca$io projector, it can be set to output between 1.5 and over 2 watts depending on which diode you are planning on using. Either way, with the pins facing you and the case pin (2) in the down position the pin on the right is the anode (positive) pin and the one on the left is the cathode (negative) pin. Then the connections will be the way I stated in my earlier post.
Most hosts are case negative. If your driver is continuous ground then what you will need to do is bridge the case pin and the negative pin of the diode together. This will supply your driver with the negative from the case of the host. If the driver is not continuous ground then you simply solder a jumper wire from case pin of diode to the drivers negative input side. No worries you will be fine. It seems scary but once all your components are in front of you it will be just fine.