Zabbix Agent built with Arduino and Ethernet Shield
- Arduino Uno R3
- Arduino Ethernet Shield R3
- Arduino Proto Shield
- 4x DHT22 temperature and humidity sensors
- 4x CAT6 UTP RJ-45 Keystone Jack (https://www.black-box.de)
- 4x old RJ-11 or RJ-45 patch cables (recycle those with broken noses)
- some shrink wrap
- some STP wire
- punch down tool
- 3D printer of your choice with 20 meters of PLA filament
https://www.brainbits.net/de/agentur/blog/hardware-hack-serverraum-ueberwachung.1297.html (in German language)