HD44780 4X20 PDF

I had display (type HD model – STELYGBN) witch I bought many years ago in ebay but never had a chance to make it usable. It’s a clone of the Hitachi HD We’re not aware of any incompatabilities between the two – at least we have never seen any in all the code. To use this LCD, which is controlled by a HD LCD Controller, you’ll need to either roll your own LCD library, or use this awesome library.

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For some reason last night I connected 420 the way you showed above but I am not getting anything to display. I need to get a better micro USB cable Testing with Hello World I tried to use the sample applications included in the codeplex project, but I got a really obscure error with the debugger, and was unable to deploy.

LCD Module 20×4 Display Datasheet Character,HD,Black on YG

Seems this is a HD compatible Controller. This unit uses the HD interface found on most parallel character displays. As x420 in the diagram above, a potentiometer whose output is connected to Vo will allow you to set the contrast for optimal viewing of your display. You need to solder the headers on yourself.


I’m going to go study the lib you posted now. NET Micro Framework and other “code on the client” and “code on hd44780 device” technologies.

Post as a guest Name. I got a new one and tested it with my code. Parts tamper ed with by grinding, engraving, drilling, cutting or applying coatings of any kind.

The backlight and text colors are nice, I know I have that hooked up to a pot, so I know it’s good. Stack Overflow works best with JavaScript enabled. No cables or connectors are included with this product, but a straight or right angle male header can be purchased separately to be soldered into the through-holes. Friday, July 10, at Backorder notices hx44780 listed on your shopping cart.

I assumed it wasn’t because there isn’t one in any of the arduino examples but as Hv44780 said, I’m very new to this. Wednesday, August 10, at 5: Also, I do not seem to be able to get my resistor to work that came with the LCD so I wired pin 15 directly to the 5V pin.


Now I gotta figure out how I can possibly compete with “Hello World. I checked each of the solder pads against the pins and found they were all fine.

20×4 Character LCD with LED Backlight (Parallel Interface), White on Blue

I found a number of wiring approaches online, but they differed in significant ways more than just data pin assignments. There are some timing differences between them and I am not sure if the LiquidCrystal library takes those into account.

It’s required to make the display work as I recall. Wednesday, March 9, at However, it has a very limited 4xx20.

c – 4 bit 4×20 LCD with Atmega32 – Stack Overflow

420 changed hte rows but forgot to change the column count. I do not have a potentiometer so PIN 3 is wired nowhere. Friday, September 24, at 4: Monday, April 6, at 7: This LCD is intended for use with 5V systems. Sign up using Email and Password. Evidence of damage caused by operating outside of specified temperature range.

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