A closed enclosure can help with 3D printing when filaments tend to warp. Although it is easy to build a simple enclosure, precisely controlling the temperature, humidity, and airflow in the build chamber often remains a complex task. This is exactly where Jayant Bhatia’s “Chamber Master” project comes in.
Chamber Master is based on an ESP32 microcontroller. It controls various components and also provides a web dashboard. This allows the status of the chamber to be monitored remotely. The system thus combines measurement and control in a single unit.
For operation directly on the printer, Bhatia relies on a small OLED display and a rotary knob. This allows menus to be displayed and settings to be made on the device. Specifications for filament types are available as presets, and custom profiles can also be created. The concept thus aims to achieve reproducible conditions without having to reset individual parameters each time.
On the sensor side, Chamber Master relies on a DHT11 to measure humidity. In addition, two DS18B20 temperature sensors record the ambient conditions and the temperature of the intake air. This setup allows you to not only see the conditions in the chamber, but also to classify the values at the air inlet. This facilitates controlled supply and exhaust air flow when active regulation is required.
A striking feature is a 120 mm fan mounted on the side with an adjustable opening. This opening determines how much air enters the housing. Together with the fan speed control, the air flow can be adjusted as required. In this way, the system can actively influence the conditions in the housing and adapt them to preset or custom profiles.
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