Weather LCD
Code for my Raspberry Pi Weather LCD. (OS)
This program was made for the 16x2 character LCD from Adafruit (https://www.adafruit.com/product/782), however it shouldn't be difficult to use with other character LCD screens. Raise an issue if you'd like to do so.
Features:
- Uses data from the NOAA, so no API key is needed.
- Displays the local weather and conditions.
- Displays weather alerts (conditions are still displayed if the the alerts don't take up the entire LCD).
- Weather alerts will cause the color of the LCD to flip red (alert color is customizable)
Installation:
pip install lcdbackpack
pip install timeout-decorator
You'll need to update your udev rules so the program can read the USB device.
Run lsusb
admin@alarmpi ~/weather_lcd> lsusb
Bus 001 Device 005: ID 239a:0001
Bus 001 Device 004: ID 0781:5571 SanDisk Corp. Cruzer Fit
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
In this case my LCD was the first line, so I updated my /etc/udev/rules.d/weather_lcd.rules like so:
ACTION=="add", ATTRS{idVendor}=="239a", ATTRS{idProduct}=="0001", , DRIVERS=="usb", GROUP="lcd", MODE="0775"
Reload the rules: udevadm control --reload-rules
You should now be able to run echo "test" > /dev/serial/by-id/usb-239a_Adafruit_Industries-if00
Open weather_lcd.service and make the WorkingDirectory=,ExecStart=,User=, and Group= variables are correct, then install the service file with:
cp weather_lcd.service /usr/lib/systemd/system/weather_lcd.service
Start and enable the systemd service.
systemctl enable weather_lcd
systemctl start weather_lcd
Notes:
I'm not really sure if I didn't do a good job soldering or what, but I had to use a timeout library. The LCD would freeze/block while connecting after running for 6+ hours.