I need to get extra pins out of my arduino uno and using my adafruit character display is using up a ton of pins (6) I have the basic $10 two line character display from adafruit. I have been reading up on the shift-lcd technique all morning and my head is spinning. There seems to be many solutions, but I'm unsure where to start. Many of the posts are very old and I'm not sure if they are relevant anymore. Some of the stuff I found is:
http://cjparish.blogspot.com/2010/01/co ... shift.html
http://www.instructables.com/id/Hookup- ... /Software/
http://code.google.com/p/arduino-lcd-3p ... p&can=2&q=
http://www.stephenhobley.com/blog/2011/ ... st-3-pins/
Can someone please point me in the right direction?
A link to a current resource that you are absolutely positive works with the adafruit character display would be nice.
Thanks.
Character Display from Shift Register
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- adafruit_support_mike
- Posts: 67446
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Character Display from Shift Register
At the risk of pushing product, the I2C LCD backpack will save you both pins and headaches: http://www.adafruit.com/products/292
A '595 shift register needs three pins. I2C only needs two, and you can connect multiple devices to an I2C bus. We've already written the code necessary to make an LCD work, so using it is pretty much a plug-and-go experience.
A '595 shift register needs three pins. I2C only needs two, and you can connect multiple devices to an I2C bus. We've already written the code necessary to make an LCD work, so using it is pretty much a plug-and-go experience.
- jcgoodman
- Posts: 107
- Joined: Thu Jan 23, 2014 6:03 pm
Re: Character Display from Shift Register
This is a product worth pushing.adafruit_support_mike wrote:At the risk of pushing product
Please be positive and constructive with your questions and comments.