Dpd mars gun is the next gen of light guns

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Howard_Casto:
I don't know if the ir lasers are safe even dimmed or I would have already done it. In regards to the camera, like I said, the ps3 camera uses custom drivers.... we don't want that because if a windows update breaks the drivers we are at the mercy of whoever wrote those drivers to get it working again. imho it needs to be a HID camera so no drivers are necessary and, theoretically at least, it'll work for years to come without hassle.

640x480 sounds adequate, but I don't know if it is. With the camera mounted perfectly where the monitor is straight on and fills the screen we have a resolution of 640x480... which will work for most games, but realistically, to mount the camera on a standard mame cab while getting the whole screen in there, the alignment isn't going to be ideal.... It'll view the monitor at an angle, possibly an extreme angle, which means that one side of the monitor is only going to take up a percentage of the screen, and whatever percentage that is, it'll be the maximum resolution of that area. So realistically you'll probably get a useable resolution of 320x240, which, again, is probably ok for old games, but it might not be enough for newer pc games. Mind you there aren't a lot of pc based games, but occasionally we'll get a gem released like typing (house) of the dead overkill. That games logic is 640x480 (the resolution of the wii, where it was originally released) so we've potentially halved the gun's resolution.

I do think it's doable, but it'll be more complex than you think. If you guys want to get together a parts list I would be willing to try, but I don't want to spend a lot of money. Assuming these guns are released, they don't seem super expensive to me.

Titchgamer:
I dont think IR lasers are dangerous per se.
I have a large IR laser torch on my night vision scope.

But what they do is white out camera optics unless they are dimmed or filtered.
Much the same effect as if you shone a torch in your eye.

Thats the thing I suspect will give issues with IR lasers used for tracking as well as false input from sunlight etc.

Howard_Casto:
I dunno… infra red radiation is pretty bad for the retinas... I just don't know how bad. From my experiments with visible lasers, you'll get a nice tight dot 99.9% of the time, but if the pointer is at an extreme angle, or maybe you hit your bezel or something you might get a flash in the eye. With visible lasers this isn't a big deal as you'll just blink, but with an ir laser you'll just keep your eye open because you can't see it.

Anyway, ideally we need a hid camera with good resolution and frame rate that maybe plays nice with Arduino or the pi. I could use a software driver initially, but ideally it'd be nice to get someone to help me and take my parsing code and get it to work on an Arduino so it'd be a hardware device... that'd just increase compatibility and reduce the overhead on the pc. I've been thinking about it, and assuming the camera is mounted so that the monitor image is only skewed on one side I think I can translate dot position to proper coordinates in an efficient manner. 2p support would be more complex, but one thing at a time.

Titchgamer:
Well basicly if you use a Class 1 IR laser you are fine in terms of danger to your eyes.

Class 2 is unlikely to damage your eyes but could do if you do something stupid with it.

Class 3 ono isa bad idea.

SammyWI:

--- Quote from: Titchgamer on March 14, 2019, 05:18:23 pm ---Well basicly if you use a Class 1 IR laser you are fine in terms of danger to your eyes.

Class 2 is unlikely to damage your eyes but could do if you do something stupid with it.

Class 3 ono isa bad idea.

--- End quote ---

The class 1, 2 and 3 apply only to visible lasers not IR. Lack of any blink reflex for IR throws things off. I haven't been able to find any IR specific guidelines like the 1, 2, 3 classes. And now there is a newer classification system even for visible. I've been using both IR and visible lasers for my virtual range project and with the powers I'm using (fit class 1 and 2 above) I'm not worried. Just follow Tichgamers' advice above - don't do stupid things. I'm not worried about reflections off my projector screen and I have no mirrors in the area. No kids either to worry about.

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