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LED Display pin out — Parallax Forums

LED Display pin out

yarisboyyarisboy Posts: 245
edited 2010-11-09 05:47 in Propeller 1
I purchased 4x7 segment LED Displays but cannot find a pin-out diagram for them to use for a layout. The Futurlec part number is 7FG3641AG. Where is pin #1 etc. I went on the Chinese site for this part and had no luck there either. Please help.

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MOORE'S LAW: The capabilities of electronics shall double every 18 months.
cloyd's corollary: Hardware is easy, software is hard.

Comments

  • kuronekokuroneko Posts: 3,623
    edited 2010-02-01 02:02
    Their website clearly (well sort of) shows the location of pin 1, I assume you just keep counting from there like you do for DIPs.
  • yarisboyyarisboy Posts: 245
    edited 2010-02-01 02:32
    Ah, I see the PIN1 note with the arrow to the lower left pin as seen (shadow through the front) one would assume that the pin numbers increase counter-clockwise around the pattern. We all know what assumptions often make us. Based on the cost of a layout, I at least know for sure where pin one is while I play mine-sweeper on a breadboard around the chip. That one missing sketch will cost about an hour of bench time. Guess that is why I had to write WRONG LIMB on the knee I didn't want surgery done on.
    I was looking for a sketch. Thanks for pointing out the clue they left.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    MOORE'S LAW: The capabilities of electronics shall double every 18 months.
    cloyd's corollary: Hardware is easy, software is hard.
  • BradCBradC Posts: 2,601
    edited 2010-02-01 02:35
    I would have thought about 5 minutes with 3 wires, a battery and a resistor (or a multi-meter that has a diode check range) would have sorted it out nicely. I have a little pile of those displays also, but I've not taken them out of the packet yet.

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    Life may be "too short", but it's the longest thing we ever do.
  • yarisboyyarisboy Posts: 245
    edited 2010-02-01 02:58
    In a worst case situation with pin-one high it would take ten probes to find the four cathodes. Five down seven to go if you count the decimal points. With bad luck, it would take 12 tests to ID all twelve pins. An hour, of course, is excessive.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    MOORE'S LAW: The capabilities of electronics shall double every 18 months.
    cloyd's corollary: Hardware is easy, software is hard.
  • suvarajsuvaraj Posts: 1
    edited 2010-11-09 05:02
    yarisboy wrote: »
    I purchased 4x7 segment LED Displays but cannot find a pin-out diagram for them to use for a layout. The Futurlec part number is 7FG3641AG. Where is pin #1 etc. I went on the Chinese site for this part and had no luck there either. Please help.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    MOORE'S LAW: The capabilities of electronics shall double every 18 months.
    cloyd's corollary: Hardware is easy, software is hard.

    hi pls see the web address http://www.futurlec.com/LED/7FG3641AG.shtml and see pin out
  • LeonLeon Posts: 7,620
    edited 2010-11-09 05:47
    It uses the standard DIL pin numbering scheme - 1-5 left to right then 6-10 right to left. I've designed a PCB for a similar display.
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