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Serial four digit 7-segment LED display module controlled by ArduinoMay 12, 2012 writes:

Seven segment LED displays are a very popular mean of displaying numerical information and finds application in front panel display boards of microwave ovens, washers and dryers, digital clocks, frequency counters, and many other gadgets. Compared to the LCD displays, the seven segment LED displays are brighter and provide a far viewing distance and a wide viewing angle. However, the downside is they are resource-hungry. It requires at least 12 I/O pins of a microcontroller to drive a standard 4-digit seven segment LED module. Consequently, their use with low pin-count microcontrollers (such as PIC12F series) is not practically feasible. Hereā€™s a solution for that. The following 4-digit seven segment LED module features a serial interface that requires only 3 I/O pins of a microcontroller and provides full control of all digits and decimal points .

Arduino is this microcontroller that allows to work with this kind of 7-segment easily. Read the full tutorial here

Via and Source: Embedded-Lab

2 thoughts on “Serial four digit 7-segment LED display module controlled by Arduino”

  • Abishai

    Nice project........................You can also find some more on

    Must see & comment.................

    • Cooking Hacks
      Cooking Hacks June 3, 2012 at 7:17 pm

      Thanks Abishai. Nice blog! It's useful to know how to use 2 7-segment with Arduino too. Great! Thanks for sharing!

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