LCD Backpack (i2c) for Raspberry Pi now?
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Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
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- tikka308
- Posts: 11
- Joined: Fri Mar 09, 2012 10:09 am
LCD Backpack (i2c) for Raspberry Pi now?
Does this new Pi plate / tutorial http://learn.adafruit.com/category/raspberry-pi mean that an Adafruit LCD Backpack (https://www.adafruit.com/products/292) can be used to control an LCD on an raspberry pi?
- adafruit_support_bill
- Posts: 88097
- Joined: Sat Feb 07, 2009 10:11 am
Re: LCD Backpack (i2c) for Raspberry Pi now?
The tutorial is for a new product http: //www.adafruit.com/products/1110
That includes pushbutton control as well as the LCD. The backpack can be used with the Pi as well, but lacks the pushbuttons and the RGB backlight control.
That includes pushbutton control as well as the LCD. The backpack can be used with the Pi as well, but lacks the pushbuttons and the RGB backlight control.
- tikka308
- Posts: 11
- Joined: Fri Mar 09, 2012 10:09 am
Re: LCD Backpack (i2c) for Raspberry Pi now?
Adafruit - Thanks for the quick reply. Yes, I understand the http: //www.adafruit.com/products/1110 is a new and different product than the LCD Backpack.
I have been longing for a way to control an LCD on my Pi via i2c (instead of the manual way, as shown http://learn.adafruit.com/drive-a-16x2- ... spberry-pi). Since this new tutorial for the Pi Plate (http://learn.adafruit.com/adafruit-16x2 ... spberry-pi) is an example of LCD control via I2C, I was hoping that meant the backpack could work! I hooked up the LCD backpack up to the SDA and SCL pins on the Pi and ran the Adafruit_CharLCDPlate.py sketch but got nothing.
I have been longing for a way to control an LCD on my Pi via i2c (instead of the manual way, as shown http://learn.adafruit.com/drive-a-16x2- ... spberry-pi). Since this new tutorial for the Pi Plate (http://learn.adafruit.com/adafruit-16x2 ... spberry-pi) is an example of LCD control via I2C, I was hoping that meant the backpack could work! I hooked up the LCD backpack up to the SDA and SCL pins on the Pi and ran the Adafruit_CharLCDPlate.py sketch but got nothing.
- adafruit_support_bill
- Posts: 88097
- Joined: Sat Feb 07, 2009 10:11 am
Re: LCD Backpack (i2c) for Raspberry Pi now?
The backpack has pullups to 5v on SCL/SDA. I believe you would need a level shifter, or remove the pullups from the backpack and add 3.3v pullups on the Pi side.
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- Posts: 12151
- Joined: Thu Apr 06, 2006 4:21 pm
Re: LCD Backpack (i2c) for Raspberry Pi now?
please note the deigns is similar but the code we have will NOT work for the i2c backpack , its ONLY for the RGB plate! The code will have to be adapted to support the backpack- no ETA as to when we can get to it.
Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/