Joysticks

Conventional Digital Joysticks

Stick diagram by JoyMonkey

Conventional joysticks are fairly simple devices without which Pac-Man would be ghost-fodder. When the joystick shaft is moved in any direction, the lower end of the stick is levered in the opposite direction and makes contact with switches, these switches are what tells Pac-Man to move and in which direction.

By using four switches at the base of the joystick, 8 directions can be achieved; Up, Down, Left and Right as well as the four corner positions. Joysticks like this are known as 8-way.

Some joysticks were designed to restrict the player from moving diagonally; for example, joysticks used in Pac-Man and Donkey Kong. Though it is possible to use an 8-way joystick for these games, it's not recommended, as accidentally hitting a diagonal with the joystick will cause Mario to stand still and Pac-Man won't know if he should go up or to the side. Joysticks like this are known as 4-way.

Other games, such as Defender, Joust, Mario Brothers and Galaga, used a 2-way joystick since movement was only necessary from left to right or up to down.

Standard 8-way only joysticks:

• Happ Competition, Happ Ultimate (can be ordered in 8 way, 4-way, or 2-way models, Wico 8-way Leafswitch Joystick (discontinued).

Standard 4-way only joysticks:

• Happ Ms.Pac/Galaga Reunion, Betson Ms.Pac/Galaga Reunion, Happ Ultimate (can be ordered in 8 way, 4-way, or 2-way models,Wico 4-Way Leafswitch (discontinued).

8-Way to 4-Way Switchable Joysticks

Many 8-way joysticks that are sold can also be set to work in 4-way mode. There are two basic methods to change modes:

1) Changing a restrictor plate that only allows the joystick handle to be pushed in certain directions; or:

2) Changing the actuator (that's the small piece on the bottom end of the joystick shaft that makes contact with the switches) to only allow contact with one switch at a time.

Restrictor plate changes convert the joystick to "true" 4-way operation, and will give the best play. Actuator changes do not keep the handle from moving into the diagonal positions, this method only keeps the switches from being activated. The result is a "dead spot" in the corners, where the stick can be pushed, but no switches are hit. This is not much better than playing in standard 8-way mode, and is not reccomended. Adjusting these joystick usually involves opening up your control panel so you can access the lower section of the joystick base. Some models using a restrictor plate can be easily changed by hand once the control panel is open, while some others require the use of basic tools, like a screwdriver.

Joysticks that can be set to 4-way or 8-way operation via an actuator swap include:

• Happ Super, Happ Perfect 360, X-Gaming Joystick (X-Arcade).

Joysticks that can be set to 4-way or 8-way operation via the restrictor plate include:

• Suzo 500 (aka Euro-Stik or Omni-Stik), Ultimarc T-Stik, Ultimarc Mag-Stik, Ultimarc J-Stik, Sanwa JLF-TP-8YT, Seimitsu LS-32.

In the last few years, some companies have added to this feature to allow the joystick to be switchable from above the control panel in some way. This makes it simple for anyone to switch the joystick between 4-way to 8-way from game to game, without having to access 'the guts' of the control panel.

Conventional joysticks that can be switched from above the control panel like this include:

• T-Stik Plus, Mag-Stik Plus, Omni-Stik Prodigy.

TRON joysticks

TRON arcade machines had 8-way trigger joysticks that were restricted to make it difficult to go diagonally. This was necessary because some of the four games in TRON were developed for 4-way sticks, while others were able to use 8-ways. More on TRON joysticks here.

Unconventional Digital Joysticks

Inside a Suzo Inductive Stick

Suzo Inductive Joystick

Instead of using conventional microswitches, Suzo Inductive sticks employ the use of a ferrite ring at the base of the joystick shaft. An oscillating magnetic field is induced in the ferrite ring by the main coil in the centre of the PCB around the opening. This oscillating field within the ferrite ring induces a current in one or more of the eight smaller coils on the PCB. The exact position of the joystick is determined by the strength of the current in each coil. A potentiometer can be adjusted so that diagonal positions are ignored (resulting in 4-way output) or that diagonals are accepted (resulting in 8-way output.) The sensitivity of 8-way operation can be refined using the potentiometer. It is completely silent and is easily switchable between 4-way and 8-way using the aforementioned pot located on the bottom plate of the joystick.

Suzo Inductive Octagonal Restrictor

It has an octagonal restrictor to assist in locating the desired directions. There are 6 pins for the connection which are labeled on the bottom plate of the joystick: Ground/Earth; +5 VDC; Left; Right; Up; Down. It is a short throw joystick with a max travel of 5 degrees from centre. The joystick is designed to be undermounted without taking the joystick apart; this requires a hole in the panel 45 mm or 1 3/4". This joystick is no longer produced but as of May 2006 some were available from Groovy Game Gear and TNT Amusements.

Happ Perfect 360 (P360)

The Perfect 360 joystick is an optical joystick, which means that the position of the handle is read by optical switches, instead of conventional leaf switches or microswitches. This gives near-silent operation, as the handle & actuator never touch anything.

These sticks have a very smooth feel, largely due to the "no touch" action. P360 joysticks have a round restrictor, instead of the more common square restriction found on many other modern joysticks. This round restriction adds to the smoothness factor, because there are no corners to feel.

Connection- P360 joys require a little more effort to hook up- in addition to the Up, Down, Left, Right and Ground connections on standard joysticks, the P360 also needs a +5 volts connection. This is easy enough to get, as encoders such as the I-Pac and KeyWiz provide a +5v header. PC power supplies produce +5v on the red wire of the drive connectors. There is also +5v power available on USB & PS2 cables. +5 volt power is easy to find.

History- The Perfect 360 started out as an aftermarket add-on kit for Wico leafswitch joysticks. Models were later added to the product line to convert Happ Super, Competition, and Ultimate sticks, and possibly others as well. Happ eventually bought the rights to the P360 technology, and discontinued the kits. Happ began producing a complete stick instead, with the top half of a Wico joystick base (no longer sold by Wico by then) mated to a P360 bottom half.

Interchangability- P360 handles and Wico handles have been found to be interchangable. There are also replacement handles available from SlikStik. Wico Pear-top sticks used the same pivot cones and spacer sleeves.

49-Way Joysticks

Once used in a small handfull of Williams, Midway and Atari games, 49 way joysticks live in a no-man's land between digital and analog joysticks. 49-way joysticks do not, as the name might seem to imply, point in 49 different directions. The number 49 comes from the number of positions the stick can report to the game hardware, including positions somewhere between "dead center" and "pushed all the way". Imagine a 7x7 grid (that's 49 squares) and you've got it. Games that originally used this hardware benefited from the extra info the joystick could report by allowing the player to control the on-screen character with more precision- both in the form of better directional control (24 discrete directions possible, if you count dead center), and 3 levels of speed control, based on how far from center the stick was pushed. For example, in SiniStar, the player can make the ship move faster or slower, by varying how hard they push the stick, and the ship's movement is not limited to just 8 directions. Attempting to play this game (or others that originally used 49-way sticks) with a standard 8-way digital joystick tends to be frustrating- SiniStar is a very difficult game in the first place; take away the speed control and limit yourself to 8 directions, and it's really, really hard. More info on 49-way joysticks can be found at What are 49-Way joysticks? by URebelScum

Games that originally used 49-way joysticks include:

• SiniStar
• Blaster
• Arch Rivals
• Pigskin 621 A.D.
• Blitz
• Blitz '99
• Blitz 2000
• NFL Blitz 2000 Gold Edition
• NBA Showtime
• SportStation
• Gauntlet: Legends
• Gauntlet: Dark Legacy

For home gaming purposes, when paired with the GP Wiz49 controller from [www.groovygamegear.com GroovyGameGear], these analog style joysticks have become a popular all-around stick. Using the GP-Wiz's various DRS modes, these joysticks can be easily switched between 8-way, 4-way, 2-way (vertical), 2-way (horizontal) and diagonal (Q*Bert style) modes without having to physically change the joystick hardware. This allows these sticks to be used to play any digital joystick games well. In additon, the two 49-way modes allow play for games that originally used 49-way sticks (and have emulator support that goes beyond 8-ways- not all 49-way games do), and also will play well for some games that originally used analog or Hall-Effect joysticks.

There are three varieties of 49-way joystick: Williams, Midway, and Happ.

The Williams are easy to distinguish- they use a distinctive rubber centering "spider" on the bottom, and have balltop handles. Red balltops come from SiniStar; Orange come from Arch Rivals. There are also Williams optical sticks out there with Turquoise and Yellow balltops. These look like 49-ways, complete with centering spider. However, these sticks do not have as many optics, and the pin connector is different, with fewer pins. These sticks are 8-way only. Turquoise ones most likely come from Bubbles, however, some early Joust games shipped with Turquoise and Yellow optical sticks.

The Midway and Happ 49-ways are very similar, in fact the Happ is just the Midway stick with a minor re-design. (Happ bought the rights to a lot of Midway's parts business several years ago.) The Midway sticks have a smaller diameter shaft, and the centering grommet has a correspondingly smaller hole. Both have a black bat top handle. Replacement handles are available in a variety of colors (Happ variety only) at [www.groovygamegear.com].

Analog Joysticks

Analog joysticks are not bound by the limits digital joysticks face. Digital joysticks can only point in 8 (or fewer; see above) directions, or no direction at all (centered). Analog joysticks can point in (theoretically) an unlimited number of directions. Furthermore, Analog joystics can discern how far the handle has been pushed from the center position. Games take advantage of these properties to give the player a much greater level of control over their on-screen character. For example, the bird in Road Runner can run in more than just the 8 standard directions, and how far the player pushes the joystick from center determines how fast the Road Runner runs.

Most analog sticks use a pair of potentiometers, one to measure left-to-right movement (the X-axis), and one to measure forward-and-back movement (the Y-axis). A few games, however, used a "Hall Effect" stick. Hall effect sticks use Hall sensors and magnets to read the postion of the stick. The end result is the same, though- both types report to the game which direction and how far the stick is being pressed.

While the actual resolution of an analog joystick may be theoretically unlimited, the standard for analog joysticks connected to a PC is 256x256. Compare this to the 7x7 resolution of a 49-way joystick, or the 3x3 resolution of a standard 8-way joystick. This explains why it is difficult to play games that originally used analog controls with a standard 8-way stick; the stick simply can't control the on-screen character the way it was intended to be controlled. A 49-way stick is sufficient for some games that originally used analog controls, but not all of them. Road Runner, for example, can be adequately controlled with a 49-way joystick, as that stick would give the bird 24 directions to run in, and four speeds (including stopped)- which ought to be enough to outwit that dumb coyote. Star Wars, on the other hand, cannot be played well with a 49-way, as that stick will only aim the X-Wing's blasters at 49 equally spaced spots on the screen, leaving Tie Fighters that are in-between those spots un-shootable. (Star Wars actually used an analog Flight Yoke, rather than an analog joystick, but these controls are electrically identical, and actually interchangeable as far as the game is concerned.)

Games that used analog joysticks include:

Afterburner CyberSled (2 analog sticks per player; two players = 4 sticks) Food Fight Jurrasic Park Maneater Pursuit Quarterback Rail Chase Red Baron Solar Assault Space Harrier Star Wars Trilogy

Steel Talons T-Mek Tail Gunner Tail Gunner II Thunderblade World Series Baseball Escape From The Planet Of The Robot Monsters (Hall-Effect) I, Robot (Hall-Effect) Road Runner (Hall-Effect)

Apache 3 (yoke) Hydra (yoke) Lock-On (yoke) Star Wars (yoke) Stun Runner (yoke) The Empire Strikes Back (yoke) The Return Of The Jedi (yoke) Turbo-Sub (yoke)

Rotary Joysticks

There are two types of rotary joysticks that often get confused: Mechanical rotary sticks, and Optical rotary sticks. Either can be interfaced with a PC.

Mechanical rotary sticks are the type that most people remember from games like Ikari Warriors. They have a 12-position rotary switch attached to the bottom of the joystick, which is turned by rotating the handle. Each turn of the handle is accompanied by a clicking sound, and distinct tactile feedback that lets the player know that a turn has been registered.

The SNK games used a stick called the LS-30, with yellow octagonal tops. The Data East games used the same sticks, but with a yellow barrel shaped top. Wico used to make a rotary stick, with a yellow balltop These were basically standard Wico leaf sticks, with the rotary switch added to the bottom. Happ still sells a mechanical rotary stick, which is basically a Happ Super with a rotary switch added to the bottom. Fl0yd at BYOAC figured out how to attach the rotary parts from a Happ rotary to the bottom of a Happ 49-way joystick, and still sells the kits to modify your own Happ 49-way.

Optical rotary sticks have an optical encoder wheel, similar to a spinner, instead. Caliber .50 used a stick called the Loop-24, with green octagonal tops. The Touchdown Fever games used a Happ Optical rotary, which is basically a Happ Super with the encoder wheel and optics added to the bottom.

Most games that used rotary joysticks used the rotary function to determine which direction the on-screen character was aiming. This allowed the player to shoot in a different direction from the direction of motion, all with one hand.

Mechanical Rotary joystick games (LS-30 sticks)

• Battle Field
• Top Gunner (bootleg)
• World Wars
• Ikari Warriors
• Victory Road
• Heavy Barrel
• Gondomania
• Bermuda Triangle
• Time Soldiers
• Guerilla War
• SAR - Search And Rescue
• Downtown
• Victory Road
• Midnight Resistance
• Ikari III - The Rescue
• Exterminator (unknown whether this used mechanical or optical rotary sticks)
• TNK III
• Battle Field (Japanese verion of Time Soldiers)
• Dogosoken (Japanese version of Victory Road)
• Makyou Senshi (Japanese version of Gondomania)
• Guevara (Japanese version of Guerrilla War)

Optical Rotary games (Loop-24 sticks)

• Caliber .50
• Touchdown Fever
• Touchdown Fever II

Other "Rotary" games

These games did not use rotary joysticks, but are sometimes confused with rotary games.

• Frontline (Taito Aim-n-Fire)
• The Tin Star (Taito Aim-n-Fire)
• Wild Western (Taito Aim-n-Fire)
• Sherrif (rotary switch)
• Bandido (rotary switch, clone of Sherrif)
• Xybots (Twist-to-Turn)
• 720 (Optical 720 spinner/joy hybrid)

European vs US vs Japanese Joysticks

Common US joysticks include those produced by:

• Happ
• Wico
• Atari
• Midway

[Most of the Happ joysticks (including the Supers and Competitions) are actually manufactured by a Spanish company (www.industrias-lorenzo.com) and are therefore technically European joysticks]

Common European joysticks include those produced by:

• Suzo

Common Japanese joysticks include those produced by:

• Sanwa
• Semitsu