pylon2mqtt 0.1.0

Pylon Battery statistics to MQTT exporter

pylon2mqtt

pylon2mqtt can periodically poll data from a Pylon Battery debug interface and publish to MQTT. It should run on Linux and Windows but since most people will likely run this on something like a Raspberry Pi, only instructions for Linux are shown here.

Installing

Get it from PyPI (you might want to do this in a virtualenv):

$ pip install pylon2mqtt

You should then have the pylon2mqtt CLI on your path.

Setting Up

First, it's probably a good idea to test if it works at all. Assuming your serial adapter is /dev/ttyUSB0, run:

$ pylon2mqtt test -s /dev/ttyUSB0

which should spit out values for all connected batteries. After confirming the basics work, you can give exporting to MQTT a try:

$ pylon2mqtt run -s /dev/ttyUSB0 -h mymqtthost.example.org

once you have it working with the desired flags, you can generate a systemd unit. Just replace run with generate-systemd and you'll get a systemd unit file that should use the right virtualenv/interpreter and set the flags you specified:

$ pylon2mqtt generate-systemd -s /dev/ttyUSB0 -h mymqtthost.example.org

Dealing with multiple serial adapters

If you have multiple USB->serial adapters plugged in, it might be a good idea to get a stable device symlink for it to avoid confusion. Use the following command to generate a udev rule to create a symlink:

$ pylon2mqtt generate-udev-rule -s /dev/ttyUSB0 

put the output into a rules file in /etc/udev/rules.d/ and then use the symlink instead of ttyUSB0.