weewx setup on a RaspberryPi 3 running Arch Linux ARM

Follow the instructions on the arm arch site or use the picarbs playbook to get Arch on the SD card.

User

Assume the user to run weewx is WEEWX_USER, that user needs rw access to /dev/ttyUSB on which the Vantage sits, so:

$ sudo usermod -aG uucp $WEEWX_USER

In .bashrc activate venv to ease weewx admin

source ~/weewxvenv/bin/activate
export PATH=$PATH:~/weewx/bin/

venv and weewx are installed below

Install dependencies

$ sudo pacman -S freetype2 nginx python2 python2-virtualenv

freetype note

Its important to get freetype2 installed before building pillow as pillow will not link in freetype2 fonts if its not available at build time during pip install.

To rebuild a existing pillow install be sure to ignore the cache:

$ pip uninstall pillow
$ pip install --no-cache-dir pillow

Setup virtualenv

$ virtualenv2 ~/.venvs/weewx
$ source ~/.venvs/weewx/bin/activate
$ pip install configobj Cheetah pillow pyserial pyusb pyephem

Install weewx

Clone weewx into ~/workspace/ and install from there

[thys@weather ~]$ tree -d -L 2
.
|-- weewx
|   |-- archive
|   |-- bin
|   |-- docs
|   |-- examples
|   |-- public_html
|   |-- skins
|   `-- util
`-- workspace
    `-- weewx

systemd

Drop in /etc/systemd/system/weewx.service

[Unit]
Description=weewx weather system
Requires=time-sync.target
After=time-sync.target
RequiresMountsFor=/home

[Service]
ExecStart=/home/WEEWX_USER/weewx/bin/weewxd --daemon --pidfile=/var/run/weewx.pid /home/WEEWX_USER/weewx/weewx.conf
ExecReload=/bin/kill -HUP $MAINPID
Type=simple
PIDFile=/var/run/weewx.pid

[Install]
WantedBy=multi-user.target

and enable:

$ sudo systemctl enable --now weewx

Serve the weather

The weather site is available locally hosted by nginx from the pi and also from a aws hosted s3 bucket

Install nginx

/etc/nginx/nginx.conf pertinent parts. Run nginx as WEEWX_USER

user WEEWX_USER;
http {
    server {
        listen       80;
        server_name  localhost;
        location / {
            root /home/WEEWX_USER/weewx/public_html;
            index  index.html index.htm;
        }
    }
}

AWS

weewx generates the static site every 5m, the generated files are copied to a s3 bucket and served from there:

http://sthysel-weewx.s3-website-ap-southeast-1.amazonaws.com/

s3cmd seems to get css mime types wrong so be sure that all css files are marked 'text/css', else it will fail to render correctly in the browser.