#pcd8544 Python library for Raspberry Pi
This repository contains a python 3 library to drive PCD8544 LCD (Nokia 5110)
PCD8544 LCD screen is a small cheap screen originally used into Nokia 3110/5110 handset. This screen is still sold nowaday and can be easily purchased online. It fits very well with Raspberry Pi and opens the world of user interface.
This is a fork to make a python3 version of this great repo (really just a couple change):
First, install wiringpi2 from drogon.net
git clone git://git.drogon.net/wiringPi
cd wiringPi
./build
Once wiringpi is installed, it is possible to test it with the following command:
gpio readall
+-----+-------+------+----+-Rev2-----+----+------+-------+-----+
| wPi | Name | Mode | Val| Physical |Val | Mode | Name | wPi |
+-----+-------+------+----+----++----+----+------+-------+-----+
| | 3.3v | | | 1 || 2 | | | 5v | |
| 8 | SDA | IN | Lo | 3 || 4 | | | 5V | |
| 9 | SCL | IN | Lo | 5 || 6 | | | 0v | |
| 7 | GPIO7 | IN | Lo | 7 || 8 | Lo | ALT0 | TxD | 15 |
| | 0v | | | 9 || 10 | Lo | ALT0 | RxD | 16 |
| 0 | GPIO0 | IN | Hi | 11 || 12 | Hi | OUT | GPIO1 | 1 |
| 2 | GPIO2 | IN | Lo | 13 || 14 | | | 0v | |
| 3 | GPIO3 | IN | Hi | 15 || 16 | Lo | OUT | GPIO4 | 4 |
| | 3.3v | | | 17 || 18 | Lo | OUT | GPIO5 | 5 |
| 12 | MOSI | ALT0 | Hi | 19 || 20 | | | 0v | |
| 13 | MISO | ALT0 | Hi | 21 || 22 | Hi | IN | GPIO6 | 6 |
| 14 | SCLK | ALT0 | Hi | 23 || 24 | Lo | ALT0 | CE1 | 10 |
| | 0v | | | 25 || 26 | Lo | ALT0 | CE1 | 11 |
+-----+-------+------+----+----++----+----+------+-------+-----+
Now, install the python binding of wiringpi:
sudo apt-get install python3-dev python3-PIL python3-pil.imagetk python3-pip
sudo pip3 install wiringpi3
The program we will use require spidev to be activated. The kernel module should then be activated.
To do so, comment the line blacklist spi-bcm2708 by adding a heading # in the file /etc/modprobe.d/raspi-blacklist.conf then reboot the Raspberry Pi to activate this module.
Finally install spidev python library:
sudo pip3 install spidev
To install the library, execute the following commands:
git clone https://github.com/t1m0thy/pcd8544.git
cd pcd8544
./setup.py clean build
sudo ./setup.py install
The following schema represent how to connect the LCD screen to the Raspberry Pi
Note: Check carefully the pin order of your LCD screen, it may be different.
Schema made with Fritring (http://fritzing.org)
The library comes with examples showing different feature and library usage.
Special thanks goes to Raspberry Pi community: