completed
Automated Filament Dry Box
A smart filament storage system with ESP32-powered humidity monitoring and automatic desiccant regeneration.
storageESP32IoT
Overview
Moisture is the enemy of good 3D prints. This project combines a sealed storage container with active humidity monitoring and automated desiccant regeneration to keep filament bone dry.
Features
- ESP32 microcontroller reading Si7021 temperature/humidity sensor
- OLED display showing real-time conditions per spool slot
- Automatic heating cycle when humidity exceeds threshold
- Web dashboard for remote monitoring via ESPHome
- 4-spool capacity with PTFE feed tubes
Results
After a month of testing, the system maintains consistent 15-20% relative humidity inside the box. Hygroscopic filaments like Nylon and TPU show dramatically improved print quality when stored in this system compared to open-air storage.