WAMBLE is the acronym we have put to the hardware and software interface for the equipment used in the study. As well as standing for
Wobble
And
Move
Balance
Environment it can also be defined as
To move with a weaving or rolling motion
(
wordnet, 2007).
The Hardware

There is one main component to WAMBLE and that is the platform. It consists of a modified game controller (a
Logitech Dual-Action Controller to be precise) housed within a small box. The joystick component of the controller has been modified so it can be controlled by four pressure-sensitive pads. These pads have been placed between to pieces of lightweight milled plywood so that they can be sat upon and allow control of the joystick by moving in the 4 planes of movement; forward-backwards, left-right and all the combinations in between.

History
The equipment is based on similar equipment used by Janet Cockburn and her team at Reading University investigating dual-tasking in adults with brain injury.
The Software
Due to the fact the system is based upon a game contoller, the software that it interfaces without any special software are computer games and applications that have been designed to be operated by a joystick. This however is also its downfall; many simple (4-directional only) games are operated by the keyboard rather than an input device such as a joystick (e.g. web-based Flash games).
To use these games and programmes one of the numerous Joystick to Mouse converter applications are required. These can be found on the Games & Software page.
Other Elements
A safety harness has been designed to be used whilst the child is sitting in a wheelchair.
A demo of its usage can be seen in the clip below
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