Anyone knows what a FIP is?

Discussion in 'General Electronics Chat' started by Cell, Feb 25, 2006.

  1. Cell

    Thread Starter New Member

    Feb 25, 2006
    2
    0
    Hello,
    I'm currently building a digital speedometer for my scooter. I'll use the schematic found on http://martybugs.net/electronics/speedo.cgi. It requires 3 LED display.

    This morning I went in a electronic store and found a super cool display, not too expensive so I bought it. (I tought it was a LED display)

    Here's the picture:
    [​IMG]
    In the back it's written : NEC FIP3AM21 NO 81-4 JAPAN.

    After intensive research, I found out that I didn't buy a led display, but a Fluorescent indicator panel., which works with a microcontroller!

    Here come my question, is there any way to use that FIP as a LED display? (wihout a μ C or complicated stuff)
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,154
    1,795
    Vacuum Florescent displays generally require a high voltage supply. That should intimidate you if you know nothing of how to build a boost regulator to boost your +12-14V battery to say 50-80 volts or possibly higher. If the display requires a separate signal for each segment and a signal for each digit then you just might have a chance with the counter and seven segment decoder of the published circuit. If the nature of your display is that you need to send data over a serial or parallel port then you are well and truly hosed. I may be going out on a limb here, but I think you just bought more than you can chew. Sorry 'bout that.
     
  3. Papabravo

    Expert

    Feb 24, 2006
    10,154
    1,795
    I may have to take back part of my previous post. It seems that lower voltage VFDs designed to run off of automotive batteries are out there. I suggest the following URL for a list of VFD makers:
    MAXIM Website
    Maxim makes controller chips in case you want to attack the uP angle.
     
  4. Cell

    Thread Starter New Member

    Feb 25, 2006
    2
    0
    Thanks, I made more research on the internet about VFD's, and I found this website: http://hem.passagen.se/communication/vfd.html They explain how VFD's works. I've been abe to light 1 segment (using 3Vdc filament and 12Vdc grid/segment)!

    The hard part is that there's 3 things to power. The grid, the segment and the filament. However two grid cannot be activated at the same time... I have to think of a way to use it, it's so beautiful lol
     
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