HD44780 and 74HC595

Other Hardware Displays
1

OK i have all the basic parts to get this working but can not find a library and tutorial on how to use them i have five 74hc595 chips and four hd44780 LCD's ? oh yea wiring diagram is a must and some code would be very helpful also using an arduino uno BTW but plan on using an attiny84 or 85
later on

2

https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home

3

that is a nice site im looking for everything on one page ? is everything there

4

You need to be the judge if everything you need is there. All you have given the forum is 2 part numbers with no explanation of what you want to do.

5

sorry I'm trying to get my attiny84 or 85 to display text for a project im trying to get some data on
beleve me I have tried everything to get these to work ... i found one guy who seems to have a working
model but I dont know what im doing wrong cuz I can not get his Librarys to work ...? Rowan sims
his library is called LiquidCrystal595 but I just cant get his library installed in my IDE

6

http://rowansimms.com/article.php/lcd-hookup-in-seconds

7

The software here works great. You will need to make a 'backpack' as per the circuits they have - there are a number of options. I had 10 PCBs made for one of the designs some time ago. Worked first time.

8

im kinda stupid i guess cuz i dont know how to make a backpack and which site has a library and the circuit diagram ?

9

I posted a site as a response to your original question. Which site did you think I was talking about?

So you seriously did not see or understand the 4th, 5th or 6th bullet points on that site?

It currently supports 4 types of connections:

  • 4 bit parallel LCD interface
  • 8 bit parallel LCD interface
  • I2C IO bus expansion board with the PCF8574* I2C IO expander ASIC such as I2C LCD extra IO.
  • ShiftRegister adaptor board as described Shift Register project home or in the HW configuration described below, 2 and 3 wire configurations supported.
  • ShiftRegister 3 wire latch adaptor board as described ShiftRegister 3 Wire Home
  • Support for 1 wire shift register ShiftRegister 1 Wire

And their library is with the Downloads on the left?

This is not hard.

10

THANK YOU FOR YOUR HELP I USED THAT ONE INSCRUTABLE I WAS TELLING YOU ABOUT AND I GOT IT WORKING I WAS INSTALLING THE LIBRARY WRONG LOL :slight_smile: