This area deals with accessibility standard switches and compatible gaming equipment. Click on the images below for more details on each controller and from where you can purchase these from.
Please feel free to e-mail for help on anything that is unclear, or to share new information.
There are a mind boggling array of accessibility switches, sensors available. I recommend 3.5mm plug switches for general use.
Use sound or a light puff of air to act as a switch. Adjustable sensitivity. Use the in-built mic or use a PC (3.5mm plug) standard one. Latch, pulse and momentary settings.
From Ablenet (USA)
Zero pressure switch. Move within the 10mm range of the Candy Corn sensor switch to trigger it.
From Origin Instruments (USA)
Sip (and) puff switches allow users to take control over two (or more) separate controls.
A range of virtual switches can take advantage of computer technology.
Camera switches: Map out an area in space, and if something passes through it or moves it, it triggers a switch event, such as a left-click.
Dwell switches: Hover over an area with a mouse pointer for a pre-set legth of time to click, or bring up a contextual menu.
Electromyography muscle switches.
From: Control Bionics (International)
Originally designed for skydiving photography, this switch will need to be carefully rewired to a 3.5mm jack plug. It also requires a strong bite which may become tiring.
Second hand you may be lucky enough to find a Toby Churchill Eye Blink switch.
Originally designed for skydiving photography, this switch 'should' work as a standard accessibility switch using a 3.5mm plug to 2.5mm socket adapter.
From: Conceptus Camera Switches (France, Germany, USA)
There are a number of assistive switching modules (aka "action modifiers") available for making switch use a little easier.
Off the shelf soutions for mounting switches into the ideal position.
OneSwitch.org.uk (D.I.Y. Guide)
D.I.Y. guides to build your own accessibility switches.