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by EssexInc
Tue Apr 15, 2014 1:25 pm
Forum: General discussion
Topic: OLED 16x2 HD44780 woes
Replies: 27
Views: 14356

Re: OLED 16x2 HD44780 woes

Hi, all! I've been struggling with much the same issue... Got a nice big 16x2 OLED that mostly works with the Adafruit_CharLCD code... to a point... I've added a "createChar" function to the Adafruit_CharLCD.py file, and it works fine for the LCD displays, writing out "sideways" characters to the CG...
by EssexInc
Thu Apr 03, 2014 8:41 pm
Forum: Beginners
Topic: 0801 display, anybody?
Replies: 5
Views: 693

Re: 0801 display, anybody?

Thanks, Trevor! I'm actually using Python for now, though I expect to port the functions to C for performance reasons eventually.... I do read C and wrote it many years ago, so I'd definitely like to see ('C'?) how you've handled this.... Bottom line is that the 16x2 works a treat, while the 8x1 jus...
by EssexInc
Thu Apr 03, 2014 7:49 pm
Forum: Beginners
Topic: 0801 display, anybody?
Replies: 5
Views: 693

Re: 0801 display, anybody?

Well... as far as I can determine from the manufacturer's documentation found here: http://www.egochina.net.cn/eBay/Download/801A.pdf LCD voltage is anywhere from 3 to 11, unless I'm misinterpreting something badly.... The eBay ad says it's HD44780 compatible, and I did some digging to verify that t...
by EssexInc
Thu Apr 03, 2014 6:46 pm
Forum: Beginners
Topic: 0801 display, anybody?
Replies: 5
Views: 693

0801 display, anybody?

Hi, folks! After playing with the 16x2 character LCDs, with and without the "plate" kit with port expander and buttons, and having gotten both working to my satisfaction, I find I want to try using something with larger letters, like this: http://www.ebay.com/itm/8-1-0801-Character-LCD-Module-Displa...
by EssexInc
Tue Mar 18, 2014 3:02 pm
Forum: Beginners
Topic: How to uninstall/reinstall vsftpd
Replies: 0
Views: 1028

How to uninstall/reinstall vsftpd

Hi, folks! After struggling to get vsftpd set up to allow anonymous users to log in and PUT files to my Pi via ftp, I've decided to "start fresh", and try again... I've read instructions that say to do "sudo apt-get remove --purge vsftpd *", which I tried, but got lots of error messages, and, after ...
by EssexInc
Wed Mar 12, 2014 2:03 pm
Forum: Beginners
Topic: rotated 8X1 display?
Replies: 5
Views: 735

Re: rotated 8X1 display?

Hello again! Here's what I've found: Using the "custom character" capabilities of the 16x2 display, I can define a "sideways" font for each of the eight characters allowed, and they look fine... Additionally, this process is fast enough that I can do it "on the fly" in python code so that I don't re...
by EssexInc
Thu Mar 06, 2014 2:21 pm
Forum: Beginners
Topic: rotated 8X1 display?
Replies: 5
Views: 735

Re: rotated 8X1 display?

Another aspect of this item: I see references in the Adafruit code indicating that there's a "1-line" mode as well as the regular 2-line mode for this display, but can't seem to change between the 2.... Does anyone have examples of using the 16x2 display in 1-line mode? Would the second line just no...
by EssexInc
Wed Mar 05, 2014 5:36 pm
Forum: Beginners
Topic: rotated 8X1 display?
Replies: 5
Views: 735

Re: rotated 8X1 display?

Thanks for the quick reply! I'll look into the graphical displays, and see what it'll take to make it happen that way, I guess...

Thanks again!

Joe
by EssexInc
Wed Mar 05, 2014 4:27 pm
Forum: Beginners
Topic: rotated 8X1 display?
Replies: 5
Views: 735

Re: rotated 8X1 display?

Well, after having gone through the exercise of getting my 16x2 LCD display up and running, I realize that I don't understand as much as I need to in order to accomplish what I'm trying to do... Guess what I need is to learn a bit more about how the displays themselves work, and what causes a specif...
by EssexInc
Mon Mar 03, 2014 4:37 pm
Forum: Beginners
Topic: rotated 8X1 display?
Replies: 5
Views: 735

rotated 8X1 display?

Hi, all! Haven't poked my head in here in quite a while.... Came across a potential project that might be well-suited to multiple Raspberry Pi's with character displays, assuming the displays can be "rotated" such that instead of 1 character tall by 8 characters wide, it's 1 wide, & 8 tall.... Anybo...
by EssexInc
Wed Jan 23, 2013 7:39 pm
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3564
Views: 129034

Introduction...

Hi, folks! New to the Pi, and to Linux (in all its forms), but not to programming... I'm a 60-yr. old ex-IBM mainframe guy, who, in the past several years has gotten involved in quite a number of non-Mainframe technologies, including PLCs, HMIs, Windows apps, etc. Hoping to learn enough about the RP...
by EssexInc
Thu Jan 10, 2013 3:51 pm
Forum: Beginners
Topic: While I wait for my Pi to arrive...
Replies: 11
Views: 1450

Re: While I wait for my Pi to arrive...

Thanks again for the pointers! I've just installed Visual C++ Express edition, and got word that my Pi is due in tomorrow! Play-time approaches!

Thanks again,

JoeP
by EssexInc
Thu Jan 10, 2013 2:15 pm
Forum: Beginners
Topic: While I wait for my Pi to arrive...
Replies: 11
Views: 1450

Re: While I wait for my Pi to arrive...

Thanks, all, for the pointers! If I get sufficient breathing-room between now and the arrival of my Pi, I may check out some of these options! On another topic (should I start a fresh thread?), will I be able to run C++ programs that are written in M$oft's Visual C++ on my Pi? Are there compile opti...
by EssexInc
Wed Jan 09, 2013 6:58 pm
Forum: Beginners
Topic: While I wait for my Pi to arrive...
Replies: 11
Views: 1450

Re: While I wait for my Pi to arrive...

Okay, thanks, pluggy! Looks like there's no way to run Wheezy on a PC..... I'll just have to wait a few more days for the UPS guy....
by EssexInc
Wed Jan 09, 2013 4:40 pm
Forum: Beginners
Topic: While I wait for my Pi to arrive...
Replies: 11
Views: 1450

While I wait for my Pi to arrive...

Hi, folks! Just ordered my Pi yesterday, and thought: While I wait, maybe I'll try installing Raspbian on a spare PC I've got here, just to play with it a bit, and get used to it... Is this OS installable on anything other than an RPi? I've got a DVD of another Linux distro (Mint 8) burned from a .i...

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