Famicom 100Hz LCD Light Gun

[user34]

There is something so that to can I play again Duck Hunt on the LCD / plasma?

Sorry 4 my Bad English

[UglyJoe]

Won't work, I'm afraid.  The way the Famicom and Zapper talk to each has a dependency on a TV's 60Hz refresh rate.

[michaelthegreat]

Actually that while that is true for the snes, the nes/famicom lightguns can work with plasma/lcd screens. The issue isn't the technology, it's the timing and/or ghosting. A good screen with little/no ghosting or lag will work fine with a nes/famicom lightgun.

[133MHz]

You're right, but even a very very small decoder/scaler delay and your shots won't register.

[michaelthegreat]

True, won't work with everything. If your tv gives you the option to leave the picture small, try that. Try through your receiver and straight to the tv.

[Jero32]

Pretty sure the lightgun is made to work only with 60 hrtz. I know a guy (kevin horton) he made the so called "kevtendo" nintendo on an fpga anyway he told me once he had to modify his lightgun to work with the refresh rate of his vga monitor :-/

[michaelthegreat]

I'll try to take a video for you sometime, but the nes lightgun has no kind of scanline counter. There are timing issues in that most games will make the screen's targets go white then black. They go white so that the gun registers "white" where you aimed. Then they go black, so you can't cheat by shooting at a turned on lightbulb. If there's any kind of lag in your tv's upscaling, you won't be able to register hits because the picture will be behind when the nes expects the white then black.

This is the same reason that some people had trouble with Guitar Hero and their large tv's. If there's lag, the picture gets behind the music. This is why Guitar Hero 2 has a calibration option.

It could be that kevtris had to do some work to get the timing to work right. I dunno.

Now the snes light gun does scanline counting and will only work with a CRT.

[Jero32]

the mod doesn't work for lcd's but the lightgun DOES work at a certain refresh frequency. (and yes I know how it works)

[133MHz]

The Nintendo Light Gun has a simple low-pass filter capped at around 16 kHz (standard TVs work at 15.7 kHz), presumably to make it more immune to stray interference from fluorescent lights and such. Kevin Horton just replaced a resistor with one that bumped the filter to ~32 kHz, allowing the gun to work with his 31.5 kHz VGA monitor.

[Jero32]

See? I was right.....just didn't remember the exact details

[133MHz]

Both of you are right, it's just that you're talking about different things .

[PatMan33]

So that means it can be done?

[Jero32]

Not for lcd's or plasma's but for crt's yes.

[133MHz]

Yup, you can make the Zapper work with CRT VGA monitors by replacing a single resistor, but then you'd have to build the right interface to connect it to the computer, write the software/drivers to make it work, etc.

[user34]

So is the Famicom Light Gun not compatibel with LCD / plasma TV? Shame: (