Location

Hardware

• Raspberry Pi 1B (https://www.raspberrypi.org/products/model-b/)
• DHT 22 (https://cdn-shop.adafruit.com/datasheets/Digital+humidity+and+temperature+sensor+AM2302.pdf)

How it works

Use RRDtool(http://oss.oetiker.ch/rrdtool/) update humidity and temperature every 1 second. The RRD graph is plotted every 5 minutes and scp to my VPS server.