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by bgreat
Wed Dec 26, 2012 4:13 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: I2C with Adafruit 128x32 I2C OLED
Replies: 30
Views: 16959

Re: I2C with Adafruit 128x32 I2C OLED

Good to know you were able to get it working. I look forward to seeing a future post with the C++ class.

Enjoy!
Bill
by bgreat
Tue Dec 25, 2012 9:21 pm
Forum: Other projects
Topic: 16x2 no contrast help (solved)
Replies: 22
Views: 6897

Re: 16x2 no contrast help

If you want to catch the program exit and call GPIO.cleanup() automatically, the following can be added to the program file:

Code: Select all

import atexit

def exit_handler():
    print 'Exiting. Calling GPIO.cleanup().'
    GPIO.cleanup()

atexit.register(exit_handler)
Enjoy!
Bill
by bgreat
Tue Dec 25, 2012 8:54 pm
Forum: Other projects
Topic: 16x2 no contrast help (solved)
Replies: 22
Views: 6897

Re: 16x2 no contrast help

Ah! A split bus on the power definitely explains it. Probably why the red and blue lines have a break. :D Today is a good day... I have learned something. The warning messages can be ignored provided you have no other application running using the GPIO. The messages should not be displayed the first...
by bgreat
Tue Dec 25, 2012 6:44 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: I2C with Adafruit 128x32 I2C OLED
Replies: 30
Views: 16959

Re: I2C with Adafruit 128x32 I2C OLED

Hello John, I'm not sure how you have implemented your code, but I waiting for a similar display for my Raspberry Pi to arrive so I can do some experimenting. Since the I2C addressing is working (you see the ACK), I would not expect difficulty with the rest of the protocol. You should not need to re...
by bgreat
Tue Dec 25, 2012 5:59 pm
Forum: Other projects
Topic: 16x2 no contrast help (solved)
Replies: 22
Views: 6897

Re: 16x2 no contrast help

The power wiring looks correct. Is your power supply capable for driving the Pi, display, and display back light? When connected to the Raspberry Pi, is the back light lit? With a meter, check pins 15,16 (A,K) for proper voltage (5v for the AdaFruit example). Also confirm 5v is present at pins 1,2 (...
by bgreat
Fri Dec 21, 2012 10:15 pm
Forum: Python
Topic: Sockets info
Replies: 2
Views: 1347

Re: Sockets info

Great that you are communicating over the socket! First... As to the data you are receiving - telnet is an intelligent communication protocol. The server expects a connection from a telnet aware client by default. When the connection is established, the server sends out a negotiation sequence to inf...
by bgreat
Thu Dec 20, 2012 10:05 pm
Forum: Beginners
Topic: Removing log in warranty-warning?
Replies: 9
Views: 17417

Re: Removing log in warranty-warning?

It is the Message Of The Day... /etc/motd contains: The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the ...
by bgreat
Fri Oct 26, 2012 7:49 pm
Forum: HATs and other add-ons
Topic: Gertboard shipping date.
Replies: 279
Views: 35642

Re: Gertboard shipping date.

I ordered mine from Element 14 on 4/09/12 and it was delivered on 20/10/12. I did get an email from them saying delivery would be some time in December so it was a nice surprise. Great news for you! :D Just out of curiosity... Where are you located? I ordered a Gertboard from Element 14 on 15-Aug-2...
by bgreat
Thu May 31, 2012 12:28 pm
Forum: General discussion
Topic: Tapatalk on the forum?
Replies: 72
Views: 16170

Re: Tapatalk on the forum?

If you go to your User Control Panel/Board preferences , you can set My board style to prosilver to get better rendering on mobile devices. The "better" is my personal opinion and is in no way intended to start a debate on the default forum theme, mobile device browser capabilities, forum add-ons, o...
by bgreat
Thu May 31, 2012 12:17 pm
Forum: General discussion
Topic: Newark charged me $50 and won't ship mine until June 18th
Replies: 25
Views: 5267

Re: Newark charged me $50 and won't ship mine until June 18t

I had what I thought was the same incorrect charge from Newark for my Pi. :o When checking my credit card online, I saw a charge for $50.75. This was a US order shipping to the US. I called Newark to discuss it with them and actually found someone who was knowledgeable. I explained that the committe...

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