[Previous] [Next] [Current Results] [Get Thread] [Author Profile] [Post] [Post] [Reply] [Image] [Image] ---------------------------------------------------------------------------- Article 298 of 369 Subject: Re: Projects for bored minds.... From: rls@ihgp7.ih.att.com (-Schieve,R.L.) Date: 1996/03/11 Message-Id: <4i1c9s$1ah@ssbunews.ih.att.com> Newsgroups: rec.games.video.arcade.collecting [More Headers] In article <4htjs7$5uk@main.freenet.hamilton.on.ca>, Doug Jefferys wrote: >-Schieve,R.L. (rls@ihgp7.ih.att.com) wrote: >: >: 11) A circuit that allows you to use a regular 8-way joystick in >: place of a Hall Effect joystick for games like Escape From the >: Planet of the Robot Monsters, and I Robot. > >Well, that's unlikely on the grounds that the 8-way stick isn't >an analog device. I'm disappointed in you Doug! ;-) Of course an 8-way stick is not an analog device but even though I don't have the smarts to design something I can conceive of how to do it. For instance when you make the transition from 45 degrees to 90 degrees the circuit would emulate a pot sweeping in that direction. Compare how games like Time Pilot or Time Pilot 84 play versus Bosconians that all use 8-way joysticks. Bosconians jumps the direction of the ship to where ever the joystick is pointing but the Time Pilots gradually turn your ship in the direction allowing you to shoot across the arc you are turning. >OTOH, a pair of 5K pots worked semi-OK when I tried using a Red Baron >joystick on EPRoM. A small modification also had to be made to the >EPRoM board to change the voltage references for the A/D converters, >but it sufficied for a "proof of concept" stage. > >Hmm, I just got a Food Fight. Anyone wanna sell me a pair of analog >sticks so I can do a better job of this and apply it to the Hall Effect >hack? (The spring strength on the Red Baron stick made EPRoM gameplay >extremely difficult - muscle cramps *really* aren't conducive to further >research :-) When I initially wired up a Food Fight board I didn't have an analog joystick but really wanted to play. I took an 8-way stick and wired 2 resistors in series across opposite joystick contacts and connected where the center tap of the pot would normally connect to where the two resistors were connected together. board input | | | +5---\/\/\/\-----O-----\/\/\/\---Ground | | | | | | | | -----X------ -----X------ ^ ^ up joystick switch down joystick switch A little crude but hopefully helpful. Anyway when the joystick was in the middle the input to the board was at 2.5 VDC. When the up joystick switch was closed the board input was at +5. When the bottom switch was closed the input was at ground. Another of the same circuits was used to left and right. Essentially this allowed me to play Food Fight but you could only move/throw in 8 directions. Kinda of like Robotron type controls for Food Fight. The game was reasonably playable but it was of course impossible to pick more than a few of the letters for the high score table where you have to throw food at the letters that surround you in a circle :-( Rick Schieve Richard.L.Schieve@att.com [Image] [Image] ---------------------------------------------------------------------------- [Previous] [Next] [Current Results] [Get Thread] [Author Profile] [Post] [Post] [Reply] ---------------------------------------------------------------------------- Home Ê Power Search Ê Post to Usenet Ê Ask DN Wizard Ê Help Why use DN? Ê|Ê Advertising Info Ê|Ê Press Releases Ê|Ê Jobs Ê|Ê Policy Stuff Copyright © 1995-97 Deja News, Inc. All rights reserved.