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BIG bargraph — Parallax Forums

BIG bargraph

ArchiverArchiver Posts: 46,084
edited 2000-10-30 12:37 in General Discussion
I'm trying to setup a really big (about 5-6ft) VU meter for audio, and
I'm trying to figure out the best way to make it so that it's visible
from all sides.. it'll probably be vertical, and free standing. I want
something with the brightness of light bulbs, but the speed and
reliability of LEDs.

any ideas?

Jason Lavoie

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2000-10-30 04:37
    At 10/29/2000 -0500 09:22 PM, you wrote:
    >I'm trying to setup a really big (about 5-6ft) VU meter for audio, and
    >I'm trying to figure out the best way to make it so that it's visible
    >from all sides.. it'll probably be vertical, and free standing. I want
    >something with the brightness of light bulbs, but the speed and
    >reliability of LEDs.
    >
    >any ideas?

    This MAY start you out, but that's QUITE some project:

    [noparse][[/noparse] http://www.national.com/pf/LM/LM3914.html ]

    which is a bar dot "graph" display with LED driver outputs. These would
    probably have to drive other chips, which, in turn, drive LED clusters. The
    LED clusters can be obtained new or surplus. B&G has had them, and MPJA as
    well.

    The greatest problem I see is the 360 arrangement, but maybe that spinning
    bit will get around that. The other alternative is mirrors, and using
    optics to get the "surround" view.

    Hope that helps.

    Regards,

    Bruce Bates


    >Jason Lavoie
  • ArchiverArchiver Posts: 46,084
    edited 2000-10-30 05:18
    Jason,
    Since "really big" is in the eye of the beholder, I suggest a small LCD
    worn on a head strap as a heads-up display.
    Dennis
    Original Message
    From: Jason Lavoie [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=QB1H6SA1-TmG_FXq5mMjjRv0paf1Q067htCb1n6uMl9gBPZAF8-OG3g-cFMBUrzsQbqcop4U4yaJ39Xkoq7xTYLwx8U]jlavoie@e...[/url
    Sent: Sunday, October 29, 2000 6:22 PM
    To: basicstamps@egroups.com
    Subject: [noparse][[/noparse]basicstamps] BIG bargraph


    I'm trying to setup a really big (about 5-6ft) VU meter for audio, and
    I'm trying to figure out the best way to make it so that it's visible
    from all sides.. it'll probably be vertical, and free standing. I want
    something with the brightness of light bulbs, but the speed and
    reliability of LEDs.

    any ideas?

    Jason Lavoie
  • ArchiverArchiver Posts: 46,084
    edited 2000-10-30 12:37
    that would be neat.. but this will be part of a mobile show for about 300
    people..

    Jason

    "Dennis P. O'Leary" wrote:

    > Jason,
    > Since "really big" is in the eye of the beholder, I suggest a small LCD
    > worn on a head strap as a heads-up display.
    > Dennis
    >
    >
    Original Message
    > From: Jason Lavoie [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=YOyH658wT6FILAtT1yevYJFt6SAYlKLlysZ2zrp3rPxf6iGhEaRUK86coaNQe2CPomEW1ihlhRxV_QNZlwJTbD7jtJo]jlavoie@e...[/url
    > Sent: Sunday, October 29, 2000 6:22 PM
    > To: basicstamps@egroups.com
    > Subject: [noparse][[/noparse]basicstamps] BIG bargraph
    >
    > I'm trying to setup a really big (about 5-6ft) VU meter for audio, and
    > I'm trying to figure out the best way to make it so that it's visible
    > from all sides.. it'll probably be vertical, and free standing. I want
    > something with the brightness of light bulbs, but the speed and
    > reliability of LEDs.
    >
    > any ideas?
    >
    > Jason Lavoie
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