Re: My NES Zapper Lightgun interface for a PC

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: Have you tried making a test program for this yet? : : Hi, : : Here is the prototype that I have used to interface : : a NES Zapper Lightgun to my PC. : : The goal of this electronic circuit is to boost : : the signal of the gun (2 PNP transistor 2N3906), : : filter the signal (CMOS 4093 ) and : : trigger Switch 4 of the Joystick A port (CMOS 4066). : : The gun trigger switch is connected to the Switch 1 of : : Joystick A. : : I have not tried to make a base to hold the gun. : : Ideally the gun can be attached to a base and to : : detect if the gun is moved from left to right or moved : : up or down, you must use 100 kiloOhm pots. : : Note: Mame simulate a video card that have a 60hz : : refresh rate, so to increase the gun precision, : : the monitor must also have a refresh rate of 60hz. : : For those having a TV in their cabinet, the TV already : : have a refresh rate of 60hz. : : The next step is to make a base for the gun and to modify Mame : : drivers to accept Joystick Switch 4 and to modify the emulated light : : gun to accept the NES Zapper one. : : I think that this circuit can be easily modified to interface most : : lightgun to a PC. (usually a light gun need power , have a trigger and have an output). : : Switch 4 is trigged when the gun see a white spot : : (as small a a dime at four feet) on the TV / monitor. : : Switch 1 is already implemented in Mame. : : Here is the URL: : : http://server36.hypermart.net/regisma/NES_Zapper_Lightgun_PC_Interface.GIF : : Do not hesitate to contact me for more info... : : thanks : : Reg : : regismalt@netscape.net

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