Telecnatron Forum

Discuss and comment on telecnatron.com articles and related topics.

Welcome! [Log In] [Register]
Forum List Message List New Topic Print View
steves
Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:24PM
A command line utilty that allows a Raspberry Pi to control a HD44780 based LCD via i2c.
Reply Quote
Erik
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:41PM
It also works on Banana Pi Thanks!
Reply Quote
FRUANC
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:42PM
great information provided! I tried using this binary however my lcd just illuminates but no text appears. The link below shows the steps I have taken to troubleshoot. any suggestions are greatly appreciated. [fruanc.wordpress.com]
Reply Quote
Antony76
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:43PM
Hi, is your code somewhere in source control? (GitHub ...) Cheers, Antony
Reply Quote
Neil Kolban
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:44PM
I just wanted to say thank you for your work. This was a fantastic article and the lcdi2c worked first time out the box. Most appreciated.
Reply Quote
Angus Lee
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:45PM
I tried your lcdi2c program on a i2C LCD display module which I bought from [www.banggood.com] No text display on the module.
Reply Quote
Michael
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:45PM
Hi! Is it possible to define custom character with in LCDI2C.C? I need some special ones: éáöüóőúűí. I know the bytes which describe these characters, but I do not know how can I send them to the device. THANK YOU! The bests!
Reply Quote
Nick
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:45PM
Hi! Thanks a lot for your utility! It perfectly works with my LCD102. But I would also like it to make work on LCD2004. Do you know what should I change in code?
Reply Quote
Alex
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:46PM
Hey! Just tried it on LCD2004 Backpack Module. And it seems as the options: -r 4 -c 20 don't work. Any ideas? Thanks in advance..
Reply Quote
Alex
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:46PM
Hi! Great job! Thanks a lot for utility. But -s option as well as support of LCD2004 don't work. Meaning, cursor always blinks and there's no way to write text on 3-rd and 4-th row. It works as 1602.
Reply Quote
Alex
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:47PM
Thanks! Works fine. Other than the -s option. Cursor blinks whatever you use: 0, 1 or 3
Reply Quote
Andreas
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:47PM
Hello! Is it allowed to use the source (or parts of it) in an own project, that might be become commercial later? Regards, Andreas
Reply Quote
techfreak
Re: Utility To Control 1602 LCD On Raspberry Pi Via A PCF8574 I2C Backpack Module
December 12, 2018 02:48PM
Hi i use Your code in my open project nettemp.pl, work like a charm grinning smiley thanks
Reply Quote
Newer Topic Older Topic
Author:

Your Email:


Subject:
Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically. If the code is hard to read, then just try to guess it right. If you enter the wrong code, a new image is created and you get another chance to enter it right.
Message: