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Driving a 7 segment display

Posted: Tue Aug 18, 2015 8:35 pm
by Endat
Image

I have a few of these, but was wondering if there is a way to run one, or a series of these, without using 6 GPIO each.

http://www.thelearningpit.com/lp/doc/7seg/7seg.html

I found this, but has anyone found a ready-made module for numbers?

Re: Driving a 7 segment display

Posted: Sat Aug 29, 2015 7:38 am
by brad
You mean like this: https://www.adafruit.com/products/879

i2c controller would do it with 2 gpio and would be easy to code, And this is ready made.

Re: Driving a 7 segment display

Posted: Sat Sep 19, 2015 10:20 am
by ingramator
Use a shift register! The 74HC595 is perfect for this. Image

Instead of arduino use vocore GPIOs :P :geek: