python-i2c-lcd

==============

Set of python scripts to launch manually or run as a service to display monitoring information on an I2C LCD display connected to the Raspberry Pi through the GPIO.

To set-up the hardware part, check Using An I2C Enabled LCD Screen With The Raspberry Pi.

Setup

sudo apt-get install python-smbus i2c-tools python-dev
sudo pip install psutil

Run as a service

sudo cp ./bin/*.sh /usr/bin
sudo cp ./service/* /etc/systemd+system/
sudo systemctl daemon-reload
sudo systemctl restart lcd-panel.service

To check that it runs successfully, enter sudo systemctl status lcd-panel.serviceand you should get an output similar to the below:

╔[fxmartin@matrix:~/python-i2c-lcd]
╚>$ sudo systemctl status lcd-panel.service
● lcd-panel.service - LCD display
   Loaded: loaded (/etc/systemd/system/lcd-panel.service; enabled)
   Active: active (running) since Sun 2016-09-11 13:54:54 UTC; 7min ago
 Main PID: 1245 (lcd-panel.sh)
   CGroup: /system.slice/lcd-panel.service
           ├─1245 /bin/bash /usr/bin/lcd-panel.sh
           ├─1247 sudo python /home/fxmartin/python-i2c-lcd/monitor.py
           └─1251 python /home/fxmartin/python-i2c-lcd/monitor.py

Sep 11 13:54:54 matrix.local systemd[1]: Started LCD display.
Sep 11 13:54:54 matrix.local sudo[1247]: root : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/python /home/fxmartin/python-i2c-lcd/monitor.py
Sep 11 13:54:54 matrix.local sudo[1247]: pam_unix(sudo:session): session opened for user root by (uid=0)

Usage

sudo python2 ./display.py line_1~line_2~line_3~line_4

or clock demo:

sudo python2 ./datetime-test.py

or monitoring:

sudo python2 ./monitor.py

Based on

• Forked from https://github.com/sweetpi/python-i2c-lcd
• pimatic/pimatic#271
• http://www.gejanssen.com/howto/i2c_display_2004_raspberrypi/index.html