MoJo : Frequently Asked Questions



The Joysticks look very sensitive can I adjust that?
Yes certainly, the MoJo can be configured to be as insensitive as you wish but some people need very high levels of sensitivity and that is what the MoJo is designed to provide.


Can a MoJo just work a Mouse
Yes it can, in fact it is possible to set the MoJo to be both a mouse and a joystick simultaneous.  See Mouse Control using a MoJo


Can the MoJo be used with Jerky movements?
The MoJo is designed for very small & weak movements not jerky spasticity.



Can the MoJo be used to control anything?
A MoJo should not used for emergency calling or controlling devices of a hazardous nature as it is designed for recreational & domestic control of a computers and non critical assistive aids.


How sensitive is a MoJo?
Very.    The zStick sensors (see Intro) can detect less that 0.2gram and less than 0.1mm movement. 
That sort of sensitivity is unusable for an able bodied user but the MoJo has a party trick. When it starts up the MoJo looks for the users initial movements and indicates so with a slow flash blue led on each channel. 
 It starts at its maximum sensitivity and when the initial overload is detected the MoJo will adjust its gain automatically to the capabilities of the user, thereby automatically calibrating to users maximum capabilities every time its used.


What is the difference difference between the basic and advanced models?
The Advanced MoJo unit is the same as the Basic unit, with the same zSensor inputs, but with the addition of a programmable component called an Arduino Leonardo board. This means that more complex processing is possible, and the Advanced MoJo has a USB connector to connect to a PC. It is also usual to have a “Magic Eye” display to assist with this more advanced control.  Either type of MoJo can support a breath (sip and puff)  input as an option.

Basic MoJo: No USB connector for a computer.  Provides relay or analogue (resistive) outputs to other pieces of equipment, such as a TV channel changer.

Advance MoJo: Has a USB connector for a computer.  In addition to the Basic MoJo features, the Advanced MoJo connects to a computer as a joystick that can be configured in software to the user’s requirements. It can also support a Magic Eye device that gives good indication for the user.


How do I know what to order?
Ask us but do read the Which Model page as well as the MoJo System page and it could be useful to download the MoJo Manuals on he Support page.   

All individuals have different abilities and the MoJo system is designed to be built to maximise what a user is able to do from the only the most minuscule movements that can be detected, where zSticks could be the best option as they are the most sensitive of our sensors.  

If a user can 'nearly' use a conventional joystick then they should have no problem with using our zJoy and zPad sensors that can be up to twenty times more sensitive than conventional games controller joysticks.


How to I customise an Advanced MoJo? 
What an Advanced MoJo does is down to the software in the Arduino processor and this is accessible be the end user or more often an intermediary support supplier.  
The complicated bits are hidden from you and the configurable bits that tell the MoJo for example to use inputs 3 and 4 to become a joystick with say a medium sensitivity is easy to change.


Is it easy to set up?
Each feature in the configurable software is given as an example and therefore when turned on will work.  From that point the values can be modified to suit the user.  It only takes a few seconds to load the new settings into a MoJo to test.  


Why wont a MoJo just plug into my games console?
We wish this was piratical but the makers of games consoles have gone to great lengths to make their games consoles only compatible with their own game pads.   A pc on the other hand can load software called drivers to match whatever is plugged into it.  But a games machine cannot do this and will reject anything other than the controller it was designed for or a translation tool such as a Titan One.   The MoJo was therefore designed to be the lowest common standard  of joystick that could then be converted by third party products such as the Titan One to be seen as a valid controller for whatever is required.


Can Celtic Magic supply all the supports and things?
This is not what we are set up to do.  We can advise and show examples of MoJo's being used by various users.  Assistive aids often need to be mounted to suit the user and most people have had such support from their local health  services.  The sensors used by the MoJo are small and should be relatively easy for such services to mount conveniently for the user.