This Proof-of-Concept show how it's possible to store raspberry's temperature data into a lucid node and fetch it into a chart.
If you want to try it on your own Lucid node, it's easily possible!
Firstly you need to deploy your own node on heroku:
git clone https://github.com/lucid-kv/raspberry-poc
I can use the CPU temperature of any server or computer easily instead:
apt install lm_sensors
sensors -A | grep 'Core 0' | cut -d : -f 2 | xargs | cut -c2-5 | curl -X PUT --data-binary "$(</dev/stdin)" https://lucid-kv.herokuapp.com/api/kv/rasp_poc_temp