Slashdev » Arduino

Bug Fixes – Arduino LCD Library

jiGGaK — Sat, 20 Sep 2008 02:26:14 +0000

Just a quick update on the Arduino LCD Library (bring it to version 0.3). I have worked many hours to iron out all the bugs in the code that checks the LCD modules busy flag. This is the part of the LCD modules controller that tells the arduino it’s in the middle of an internal operation.

Hopefully this fixes the sporadic behavior people have reported with their LCD’s. It certainly fixes the problem with the two LCD’s I have tested.

I also added a schematic to the package. It just outlines where to connect VCC, GND and where to put the 10K pot.

Updated Arduino LCD Library

jiGGaK — Sun, 09 Mar 2008 16:13:43 +0000

I received an email from Keith Neufeld (awesome electronics blog) about my Arduino LCD library with some tips on how to improve it. So over the weekend I dived in and did just that.

Specifically, this version removes the hard coded delays after each command is sent to the LCD and checks the LCD’s busy flag. This is a cleaner approach and should mean that the library works more reliably with various LCD modules (hopefully). The setup method has been cleaned up as well to make initialization by instruction just work without any hacks.

Of course, this does mean that the RW pin on the LCD must be connected to the Arduino instead of connecting to ground.

As before, see the Arduino LCD Library page to get the latest version of the code.

Arduino + HD44780 LCD Module

jiGGaK — Sun, 13 Jan 2008 19:34:37 +0000

I’ve written a library for interfacing the Arduino with HD44780 based LCD modules. For now it lives here on my site, but if it’s popular enough it might need to move somewhere like the Arduino Playground.

Check out the Arduino LCD Library page for more details.

Here is a short video demonstrating an animation sample.