SmartNav 4:AT Overview
Complete Computer Control - Assistive Technology
Complete Computer Control
The SmartNav 4:AT package is the total hands-free mouse alternative for people with ALS, spinal cord injuries such as quadriplegia, muscular dystrophy, and other special needs.
With Assistive Technology prices exceptionally high and exploitive, the SmartNav 4:AT provides a tool for communication and activities otherwise impossible to achieve.
Package includes:
• 1 SmartNav™ AT device (100 fps)
• 1 software CD with electronic users manual
• Dwell Clicking and On-screen Keyboard programs
• 1 Quick Start Guide
• 1 Y-breakout cable (for switch input)
• 2 rings (request via contact form)
• 26 reflective dots
The SmartNav 4 includes improved light filtering and tracking, longer range (up to 6' from the unit), three times the resolution of SmartNav 3, a new aluminum case, improved mounting options (including 1/4-20 thread mounts for standard tripods), detachable USB cable, and much more.
Complete Computer Control
SmartNav comes with everything you need to control your computer using only your head motion.
This package is the ideal solution for Assistive Technology applications as it provides everything needed to have complete control of your computer without the need for hands.
Dwell Clicking
You can left click, double click, drag, right click, and more - with our "dwell click bar" software application. Find out more about how, and why, to use it in our Dwell Click How-To.
Natural Motion
SmartNav was designed to complement the natural head motion you already perform when looking around. Moving your head less than a quarter inch easily maneuvers the cursor across your entire screen.
Virtual Keyboard
You can type on your computer screen with SmartNav's virtual keyboard program.
Switch Input
You can plug a click switch or a footswitch directly into the back of the SmartNav. With the Y Breakout Cable (included), you can plug in separate click switches for left and right clicking.
How It Works
SmartNav uses an infrared (IR) camera to track your head movements.
You reflect IR light back to the SmartNav, which sends instructions to your computer to move your mouse cursor.
SmartNav tracks reflections from a tiny dot, which you can place anywhere.
On Head
On Hand
Hat
Glasses
Mic Boom
Put a paper thin tiny reflective dot on the part of your body you'd like to control the cursor with. Placing the dot on a hat or mic boom are the current favorites.
- WHERE DO I PUT THE SMARTNAV?
The SmartNAV usually sits on top of your monitor, facing you. But you can clip it to laptops or place it behind you. It can be placed anywhere as long as it can see whichever reflective accessory you've chosen to wear.
Less than an inch of head movement is more than enough to move the cursor across your entire screen. This is also adjustable in our software's "speed" settings. SmartNAV has a 30 degree Field Of View (FOV), and usuall sits about 2 feet away from your head. Thus you have at least a foot and a half of free "head space" in which to move that simple inch.
You can click with (redefinable) hotkeys on your keyboard, you can plug a switch into the SmartNAV device, or you can use the Dwell Clicking Software. We sell simple Click Switches, which can be joined, via our Y-Breakout Cable, to fully simulate a mouse. We also sell a footswitch, which has two buttons built in. With the Dwell Clicking software, you can click just by hovering the cursor in one spot for some small (and adjustable) amount of time.
Infrared light is emitted from the LEDs and is reflected back to the imager by a corner cube reflector (3M safety material). This reflected light is imaged by a CMOS sensor and the video signal is passed to the preprocessing electronics. The video signal is thresholded against a reference level and all passing data is sent to the USB microcontroller to send to the PC for object tracking. In order to increase the signal to noise ratio an IR filter that passes only 800nm and above is placed between the imager lens and the outside world.
The Smart-Nav can image any IR source; typically this is reflective material or an active IR source such as an LED. A user may track many different objects by placing reflective dots or LEDs on the object. The Smart-Nav has a 30 degree field of view and anything being tracked must stay in that field of view.
System Requirements
500 MHz Processor
USB 1.1 or 2.0 port
CD-ROM drive
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