Multiplexing number of led-displays

ScottWang

Joined Aug 23, 2012
7,397
Some links to be your reference, and draw your led display to 8x2 arrangements.

Changing the 5x7 led display circuit diagram to 8x2 arrangement, and keeping the same practical position.

5x7 led display 8x1 arrangement -- You could change STP16CP05 to 74HC595.
http://www.electronics-lab.com/projects/misc/013/Schematic_2.png


8x8 led display 8x2 arrangement -- change 8x8 LED to 5x7, ULN2803 to ULN2003, you could drive ULN2003 from I/O of uC.
http://embedded-lab.com/blog/wp-content/uploads/2011/05/Ckt_ScrollLED.jpg


5x7 led display sample -- page 5, the numbers of bjt related to 7 led.
 
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