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Description: These 10 segment bar graph LEDs have many uses. With a compact footprint, simple hookup, they are easy for prototyping or finished products. Essentially, they are 10 individual blue LEDs housed together, each with an individual anode and cathode connection.

We also carry these in yellow, red, and green.

Note: The pinout on these bar graphs may vary from what is listed on the datasheet. Rotating the device 180 degrees will correct the change making pin 11 the first pin in line. We have contacted our supplier to correct this mistake in the future.


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Customer Comments

  • 11 pin (10 resistor) resistor networks are perfect for hooking these up without using 10 individual resistors. Any chance one could be added to the store that works well with these?

    • We can surely check into it.

    • And no rats nest of resistor leads to boot! The ones I’ve been using only have 8 resistors in them. Some 10’s would be an excellent addition for any blinky project.

  • has anyone ever seen any of these that are RGB?

  • Is this the same one that is on adafruit?

    • No. Yes. Maybe. Welcome to the world of cheap electronics :)

      Basically, according to the datasheets these are from two different companies and have two very slightly different characteristics. One has a typical Vf of 3.2V, the other has a typical Vf of 3.4V. One has a typical forward current of 20mA, the other of 25mA.

      However, attempting to look at the markings on the packages - unfortunately only on the underside, and Adafruit doesn’t have a nice clear underside picture - they certainly seem to run the same part code, and of course externally they look like an exact match.

      But are they? Who knows. If you’re using these individually somewhere, I’m sure they’re entirely interchangeable. But if you were using them side-by-side, I’d stick to sourcing them from a single place. You don’t want to end up with one set of segments being slightly lighter/darker, or slightly more cerulean than prussian.

  • Which side is positive and negative?

    • There is a very slight bevel on one of the vertical edges. If you look closely, 3 of the edges will be sharp, and the fourth will be slightly rounded. That’s pin 1, and that long side is the positive side. See the datasheet for a diagram. You can also always test unknown LEDs with a voltage supply and a resistor; they will only light up in the proper direction.

  • Someone tell me how to right one of these up to a mini photocell or lilypad light sensor so that it roughly measures the amount of light coming in. Is it possible?

    • You would need a Lux or luminosity sensor for that.

    • Not to my knowledge, the mini photocells only report ‘light is on’ or ‘light is off’ they don’t detect an amount of light.

  • Some items are titled “Bar Graph” (like this one), some are “bargraph”, and I would hope that SparkFun’s soundalike search algorithm would find both versions for either search. But it does not.

  • i love this product

  • Holy crap, those went out of stock fast!
    if they are just a bunch of LEDs in a housing, why can’t they be common cathode?

    • They could be, but why would you want to do that? If nothing else, things tend to sink current better than source current, so you’d want it to be common anode ;)
      This arrangement provides the most freedom in terms of circuit design :)

  • I was dissapointed in these, as many of them that I ordered were not a true Blue, but a blue-green, like turquoise. Plus, the brightness wasn’t consistent on all segments. Not Sparkfun’s fault, but poor overseas manufacturing.

  • Even better would be using this with a TLC5940! I’m going to order a few for just that reason!

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