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XVH-5000
This project was created to
replace the older system shown here. The client wanted to keep the same
general layout, while upgrading the interface to USB and changing the
function of several buttons. The new design contains the original clusters
of nine pushbuttons, as well as the six-button cluster.
The older 'spacebar' button
was replaced by a 3.7" round domed pushbutton with excellent tactile
response. It can also be lighted via LED or incandescent lamp, though the
client chose not to utilize this function. The black buttons used in the
previous project were extremely 'slow' and required significant operating
force. They were replaced with new switches from NKK. This particular
version provides excellent tactile feedback even with a light (300 gram)
touch. They are designed with a removable cap which is available in many
different colors.
For this project, the caps were specified to be
clear. Printed material can be inserted under the cap, allowing for easy
customization. These switches can also be illuminated, but are not at this
time.
The center cluster of 5 small pushbuttons surrounding
one larger button was included as previously designed. The joystick shown
has been modifed to rest in the 'down center' position, rather than
'center center.' Per the client's request, one switch activiates when the
joystick begins to be pushed up, and the second switch activates in the
'up center' position. This arrangement allows the partial completion of a
task to be recorded. The joystick housing is machined to restrict
left/right joystick motion.
Finally, the joystick contains a rotary encoder which
transmits separate signals for clockwise and counterclockwise rotation of
the joystick shaft. The encoder switch contains 12 poles, spaced at 30
degree angles. Tactile feedback is good, and rotation force is fairly low.
The enclosure, machined by Falcon Sheet Metal of Bountiful, Utah, is made
of black-anodized, .09in brushed aluminum. It is incredibly sturdy.
Enclosure fasteners are hex headed to deter tampering.
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