Arduino Homelab Display

ESP32-based status display for various server metrics.

Implements reading the following sensors:

• CPU temperature via a very rudimentary IPMI client implemention
• Proxmox CPU usage via its HTTP API
• TrueNAS disk usage via SNMP
• UPS power draw via SNMP
• CPU usage via SNMP (unused by default)

Additional functionality:

• Web interface for remote viewing or embedding of current sensor values
• Over-the-air firmware updates via ArduinoOTA

This is a personal project that is only tested with the hardware/software listed below — it is not a general-purpose application. Please create a fork if you'd like to extend the code.

• ASRock Rack D2163D4I2-2T
• Proxmox 8.3
• TrueNAS Scale 24.10
• Eaton 5P 1500 RC with Gigabit Network Card

Parts

• Adafruit QT Py ESP32 Pico
• Adafruit Grayscale 1.5" 128x128 OLED
• Adafruit STEMMA 4-Pin Cable

Setup

1. Install Arduino libraries:
   • Adafruit GFX Library
   • Adafruit SSD1327
   • SNMP Manager
   • ArduinoJson (not Arduino_JSON)
2. Copy Secrets.example.h to Secrets.h and configure
3. Compile and upload code to ESP32

Acknowledgments

• Custom fonts created with GFX Font Editor
• Partially developed with Anthropic Claude