Very interesting. I'll be looking for something to replace the Pi, as pihole and tweeting at the same time seems to stress the system a little bit too much. Would also not like my central heating to rely on the Pi given its flakiness - could end up being costly
When I have some more time I'll pretty up the graphs and add some record monitoring.
I'm using an ESP8266 to do the data logging to wifi. I can't believe how versatile these boards are. Less than a fiver too.