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Designing your arcade panel layout

An article originally posted on wereallgeeks

Building your own arcade control panel can be daunting, but very rewarding. Everything one needs to know to make an arcade control panel has been said and done. Or was it? We covered the bases at WereAllGeeks and it was recently reposted on the GameOnGrafix’s blog. This includes all one needs to know to build it – but not how to design it.

Today we will discuss this very matter, by exploring the redesign of our standup arcade control panel.

For over a decade, the reference for arcade joystick and button palcement has been Slagcoin. However, they focus on a single joystick construction. What if there are multiple joysticks on an arcade control panel? These can still be used as a reference, but more research has to be done for the placement of the various components.

1- Scope

Our standup arcade cabinet’s panel was originally designed the same way, but for only two players – each with a joystick and 6 buttons.

One of the rationale into rebuilding the control panel is to add more possibilities to the arcade cabinet. Extra hardware was originally omitted, but some favourite classic include spinners, trackball or flightsticks. Oddly enough, the bat-style joystick may be better for fighting games, but old-style retro games from the 80’s were designed with ball-top joysticks and adding this possibility is also being considered.

Finally, the finish did not stand the test of time and is due for a good refresher.

Here is what the cabinet looked at the beginning of the project.

image 11
Designing your arcade panel layout 1

2- Requirements

Here are what we would like to accomplish with the refit.

-Unlock ball-top arcade classics such as the Donkey Kong series.
-Unlock paddle/spinner games such as the Arkanoid series.
-Unlock trackball games such as Missile Command.
-Keep the two-player Fighting games capability
-Keep the coin mech for credit insert
-Keep the player start buttons
-Add a USB maintenance port

3- Hardware

Here are the hardware acquired to install on the new panel:

-2x (joystick and 6 buttons) (US-style)
-2x Spinners
-1x 2,25 inch trackball and two 24mm buttons
-1x Balltop joystick for arcade classics
-3x leafswitch buttons for arcade classics
-1x Flight stick with dual on-stick buttons
1-2-3-4 player buttons – US Concave
-controllers for the spinner/trackball/coindoor/player button and menu access.

We will be reusing pre-existing hardware too

-iPac for hardware input
-Cabinet, coin door, arcade computer

For this control panel we will not put the 1-2-3-4 player buttons on the panel, but on the front of the machine. Our arcade has actual coin door with coin mechanism which is a feature that will remain..

3- Design

To help with design, we decided to use a graphics software with layers; using appropriately sized layout taken from Slagcoin and specs sheets. CAD software could also have been useful.

Using a graphics software to tweak the layout will have a supplemental advantage in that when we design graphics to put on the same panel – custom control-panel-overlay as seen at GameOnGrafix – we will already have the buttons placement for reference…

3.1- Design for the actual cabinet

First thing to do was to measure the current arcade panel, and put it on our layout for reference. We also added a general idea of what the new panel should look like. It was decided to have a rounded front and overshoot the sides of the cabinet. The general shape changed a few times.

Designing your arcade panel layout 2

From there, we added the components, and moved them around.

3.1.1- Factors to consider in placement

Here are things to keep in mind when placing the components on the panel.

A- Room required to mount the device.

Not everything is visible from the top. Like an iceberg, there is more below than above. For instance, the trackball uses much more room than the actual ball.

B- Hand placement.

While the relation between buttons and their stick has been discussed quite much on Slagcoin, and we used this to base our stick/button setup for a single joystick/button component, we also need to think of interaction between the various components, and how they will impact each other. Two components cannot be too close as to not be able to be used because of the other components.

C- Gameplay

We need to think of every plausible gaming usage of the various hardware – to place them in such manner as to keep the player comfortable with any possibilities. For instance, the flight stick may be used standalone, with buttons, or even with a spinner.

D- Dual players

The reason there are two spinners, and two joystick/button sets, is for multiplayer. We didn`t go with a 4-player setup, but we still need to ensure two players can comfortably use all the hardware available to them. Being too close from one another was an issue on the old layout of this cabinet.

E- Arm access to the hardware

Much effort is to be made for anything that is on the back – that is, closer to the monitor than the player. The far-back hardware needs to be accessible and unencombered, and the player’s arms need to be able to lay comfortably – so positionning of the hardware in relation to the player and the hardware in-between is matter for reflexion.

F- Hardware/software interface.

While we won’t cover much of the electronics part of making a control panel today, having the electronics to accomodate the hardware is still something to think ahead of time.

On this control panel we ended up choosing 2x 1-stick-and-6-buttons (10 inputs each when counting up,down,left,right) plus a balltop (4 inputs) and a flight stick (6 inputs including the two buttons) plus 3 leaf switches, trackball and 2 buttons, two spinners. We also opted to place the start buttons (1-2-3-4 player) on the front of the cabinet; partly because we hope to make alternate usage control panels later and want to be able to keep the coin/start functionality – this is also why the coin door/player buttons and such are planned on a separate controller.

This totals 41 normal inputs, 2 mouse buttons, and 4 mouse axises that we will separate on more than a single controller.

We already had an ultimarc iPac that will cover most of our needs. Spinners, trackball, and a few buttons will get their own electronics.

3.1.2- Use Cases

Here are the gaming scenarios we explored

A- Two players – joysticks
B- One player using two joysticks
C- Using the balltop joystick with leaf buttons
D- Two players using spinners
E- Using a spinner with the flight stick.
F- Various scenarios of trackball usage.

4- Virtual experimentation

The following are hand placement designs that we made (to scale) to help with the overall layout. Every steps created a new positionning iteration to solve issues that was highlighted by how hands and arms would get positionned on the panel and between the components.

4.1- Two Players

image 1
Designing your arcade panel layout 3

Being that we planned the front of the control panel to be rounded, we originally imagined using this curvature and put the joystick-button sets at an angle; about 30 degrees to the left or right for players 1 and 2. However, it is documented online that this would mean “up” wouldn’t actually be “up” but somewhat of an angle, which may look OK but is counterintuitive.

This is how they designed the control panel for Q*Bert, because they only used diagonals. And it made sense. But for games that use UP, the UP needs to be pointing to the screen…

We opted to put both layout fully parallel with the screen.

image 2
Designing your arcade panel layout 4

We spaced the players as much apart as possible to keep room for the trackball, which will go in the middle.

4.2- Two Joystick

The balltop (left) and flight stick (right) are farther back. this means most everything else is on front of them.

Something in front of is actually in the way. We moved them around a few times before finding a combination that leaves room between the front joysticks and the trackball.

image 4
Designing your arcade panel layout 5

4.3- Balltop and buttons

The leaf-switches (top buttons) are meant to be used with the Ball Top (upper left joystick) but we kept them to the right of the joystick – classic games were different from modern 6-button fighting stick games and their buttons were often farther, so this will play well even if the flight stick is between them.

image 5
Designing your arcade panel layout 6

The leaf switches may also be used with the flight stick, or with other joysticks.

4.4- Two player spinners

Pong is very classic. but there are much more joystick games than spinner or paddle ones. For these reasons, the spinners are on the back. But there is enough room around them for hand placement to keep spinner usage comfortable.

We placed them somewhat centered between the arcade walls and the upper joystick, which happens to be also somewhat between the front joystick and their buttons. It seems like the most optimal placement.

image 6
Designing your arcade panel layout 7

Spinners can also be used with buttons, or with the flight stick.

4.5- Spinner/flight stick combo

There are many games that use joystick, sometimes with triggers, and spinners as well. After moving things around, the setup fits nicely for this feature.

image 7
Designing your arcade panel layout 8

4.6- Trackball

The trackball is a strange beast. Somewhat small from the top, but rather big from the bottom. It also requires room to spin that ball. Lots of room for some games where longer ball rotation is part of the gameplay. The joysticks have all been moved quite a few times before finding a layout that leaves some room all around the ball.

We toyed with the idea of not putting any trackball buttons – there are already a ton of buttons on the pannel. Couldn’t we use already existing ones?

But we decided to place the left- and right- click buttons of the mouse. This will be useful for arcade maintenance – essentially using the trackball as an OS mouse.

We also had to choose what types of buttons; full-sized? smaller sized? For some time we tought of something similar to Atari “volcano buttons” but those aren’t as easy to press (more required pressure) and have a higher clearance. We opted to put two 24mm japanese buttons instead. Then we moved them around. A lot. and ended up with having one on the left, one on the top – this seems like it will be most flexible for one- and two- hand operations.

image 8
Designing your arcade panel layout 9
image 9
Designing your arcade panel layout 10

5- Physical experimentation

Once we had the layout almost finalized, we printed the design to figure out further more how it would feel – fullsize print (on multiple sheets of paper) and used the realsize paper sketch to help imagining how the button placement will feel with the hands and arms moving around. This helped finalize the tweakings.

Here is one of the many prints that was made duging the design process

image 10
Designing your arcade panel layout 11

On this layout were possible button placements that changed since – we have decided to put the leaf-switch to the right instead of the left; not as close to the balltop, but on the correct side.


This concludes the tough process of going through a control panel design.

= Fun story, hardware construction had already began by the time we finalized the trackball button placement… at some point, one just have to decide what to do, and just do it. There are no right or wrong designs, but many, many options…

Soon we will talk about construction, as well as graphics design.

Build an arcade control panel for your computer or console (wereallgeeks)
Build an arcade control panel for your computer or console (reposted on GameOnGrafix)
Slagcoin button layout (Slagcoin)

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