Using QTouch as a joystick/mouse equivalent?

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We have some apps where we use touch buttons, either with QTouch chips, or the QTouch library directly driven by an AVR8.

Looking at the next generation of these control systems, I'd like to use some kind of "point-and-shoot" navigation like a joystick with fire button on top or a mouse.

But this app area is VERY tough on buttons and the like. Concentrated cleaning chemicals and fumes and washdown and ... Even very-well-sealed and rated industrial buttons and switches fail over time. From experience, there has not yet been found a resistive display touch that holds up.

So, does anyone have experience doing QTouch or equivalent for joystick/mouse equivalent?

Hmmm--I have another current thread about GLCD in the same environment. Perhaps the capacitive-touch like on Android would go through our polycarbonate viewing window on the enclosures?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Some "buttons" are sensitive enough to operate behind a 3 mm thick polycarbonate ( plexiglass ) window.

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theusch wrote:
Looking at the next generation of these control systems, I'd like to use some kind of "point-and-shoot" navigation like a joystick with fire button on top or a mouse.
A competitor to Atmel QTouch is Azoteq ProxSense.
A two dimensional (array) trackpad can be created or a one dimensional slider.
Snap domes (a form of tactile switch) can be on the array.
Experience with snap domes is these can be sealed by the membrane but the membrane may not survive heavy usage by fingers (gloved or not).
Trackpad Design Guide (Azoteq, AZD068)
Two forms of trackpad modules are off-the-shelf for evaluation.
theusch wrote:
Hmmm--I have another current thread about GLCD in the same environment. Perhaps the capacitive-touch like on Android would go through our polycarbonate viewing window on the enclosures?
Azoteq has a projected touchscreen to compete with Atmel maXTouch.
The projected touchscreen fits over the display with a flex cable to a small PCB containing the controller.
Two off-the-shelf for evaluation; recent arrival at a major US distributor.
Modules (Azoteq)

Atmel maXTouch -
Some of Precision Design Associates' (PDA) products integrate with some of Atmel's boards like the Xplained series and SAMA5D3.
PDA also creates custom designs.
http://www.pdaatl.com/index.htm

"Dare to be naïve." - Buckminster Fuller