Well it’s been a little over two week and the Raspberry Pi 3 Model B weather station has held up; figured now would be a good time to go a little deeper into the setup. Telegraf has been solid in ingesting my JSON documents periodically, lets have a look at it’s SensorTag configuration:
# cat /etc/telegraf/telegraf.d/sensor_tag.conf [[inputs.exec]] command = "cat /sensor_tag.json" data_format = "json" name_suffix = "_sensor_tag" interval = "60s"
This telegraf configuration inserts the output of /sensor_tag.json every 60 seconds into InfluxDB.
In order to keep the JSON document up to date I have cron executing a python script every 60 seconds:
# crontab -l | grep sensor * * * * * /root/sensor_tag.py A0:??:??:??:??:??
sensor_tag.py is a slightly modified version of my SensorTag code on Github .