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4-Digit 7-Segment Display - Kelly Green

Description: This is a basic, 4-digit 7-segment display - green in color. It has a common anode. The display features one decimal point per digit, and individually controllable apostrophe and colon points.

The LEDs have a forward voltage of 2.1VDC and a max forward current of 20mA. The hardware interface is sixteen (two rows of eight) through-hole pins.

We carry this same display in red, yellow, and blue.

Dimensions:

Overall Display: 40.18 x 12.8 mm (1.58 x 0.50")
Digit Height: 10mm (0.39")

Documents:

Pricing

images are CC BY-NC-SA 3.0

ASCII version

Comments 15 comments

JohnBoxall | about 2 years ago 2

scampa, these are easy to use with Arduino – I have written how to do it here: http://tronixstuff.wordpress.com/2010/07/07/getting-started-with-arduino-%e2%80%93-chapter-twelve/
Mikey | about 2 years ago 1

One of the photos of this item looks “doctored”, or is it just me?
Drone | about 2 years ago 1

Oh how I wish there was a six segment version of this for clock displays.
johndavid400 | about 2 years ago 1

I have a question, How might you display the number “20”? I am playing with this thing and… basically if you create a 7-segment number on more than 1 of the 4 digits, it will display the same 7 segments on each digit.
I can make a 2 appear on digit 3, and a 0 appear on digit 4… but try to do them at the same time and I get an “88"
am I missing something?
- Snibble | about 2 years ago 1
  
  Yes, you’ll need to do some multiplexing. You want to rapidly sequence through each digit, not turn them all on simultaneously.
  See http://www.mikroe.com/en/books/picbook/7_08chapter.htm for an example.
scampa | about 2 years ago 1

Has anyone ever used this with the Max7219 chip and an Arduino? I’m trying to get this to work using the LedControl-library but am having problems. I’m not really sure where to start!!
thanks!
- scampa | about 2 years ago 1
  
  I just realized the Max7219 work with a common cathode..not the common anode of this display :–(
  ..but at least I answered my own question! :–)
Rogue | about a year ago 1

A black plastic bezel would be nice to make these look professional with a project box. The displays themselves are awesome.
tamamahan | about 11 months ago 1

Does anyone know the light-up and light-down response times of these displays?
Armus | about 11 months ago 1

bought three of these, two came with burnt out segments
- ToniK | about 11 months ago 1
  
  Sorry to hear that. Contact tech support at sparkfun dot com and we can get you taken care of!
- Paradoxial | about 8 months ago 1
  
  That happened to me too. Sparkfun replaced it for me.
Member #261075 | about 4 months ago 1

Anybody has the EAGLE library for this part ?
prairie mystic | about 4 months ago 1

“Kelly Green” is a yellow-green, not “emerald green”
roychook | about 2 months ago 1

does each led on the display draw 20 mA or net current draw is 20 mA. sorry the data sheet wasn’t so clear or i probably just missed something.