P2S Fully Smart Active Chamber Temperature Module

A hand-made active chamber temperature heating control system, which can be operated manually or run fully intelligently

It adopts a split design, where the in-chamber heating component is integrated with the machine, and the external control component connects to the internal component using quick-plug connectors, preventing high temperatures from affecting the control equipment

The in-chamber heating component currently only supports PS2 series models

This is an auxiliary heating function added to my fully intelligent modular temperature-controlled riser (← click to visit), and it is recommended to use them together

Of course, this module can also be used independently

It supports Mijia and Mijia Geek Edition smart control, and can be linked with any riser system that supports Mijia control

Considering the temperature resistance of smart control components and temperature detection components in the design, a split design is specifically adopted. The PTC and turbine fan each use 2-way control. The heating PTC can only operate when the fan is running. After turning off the heating, the fan can still operate to dissipate residual heat from the PTC more safely

Using a 300W PTC as the heating source, the chamber temperature can be stably maintained at 58° when used with my riser throughout the entire process with simultaneous external exhaust conditions. This effectively addresses the in-chamber temperature requirements for printing high-temperature filaments like ABS and ASA, and also resolves the need for external exhaust of pungent odors during printing. Tests show that printing ABS is very stable, with minimal shrinkage and no warping (Bambu Lab ABS printing plate without adhesive application)

------------

The design style is integrated with the 3D Printer, using central air intake where the intake port directly faces the exhaust port of the original machine's internal circulation, with air exhausting from both top and bottom simultaneously to prevent heat accumulation

The upper air vent is designed to be magnetically detachable, mainly because my modeling ability is limited and I couldn't properly handle the R-angle at the shrinkage point. If any master could help draw an air vent, it would be exactly the same as the one on the right

The interior adopts a snap-in design, not using the three screw holes inside the machine, ensuring very secure fixation and preventing screws from being too long and piercing the outer casing (ouch)

Please print the internal chamber components using ABS or ASA, or any better temperature-resistant materials. Please note shrinkage; the print profile provides shrinkage tests, so be sure to test the sinkage rate

Carefully designed quick-plug cables connect the external controller to the internal components, allowing for quick disconnection and connection

The external controller contains a universal temperature sensor and two Mijia on-off switches

The external controller theoretically supports any heating and temperature control product within 400W

Controller quick-plug interface, from left to right 12345 are respectively, 1-Fan 220V L / 2-Heating 220V L / 3-Common 200V N / 4-5 Temperature sensor probe wire /

The temperature sensor is a universal product used by many users, and through my circuit design, it can participate in smart control without carrying a load. Even if it fails, it only results in the loss of one layer of temperature protection

The Mijia on-off switch contains a 16A relay, but for safety reasons, these types of products are not recommended for a total load operation exceeding 400W. Therefore, a 300W PTC heating core is specifically used

Multiple air outlet guide grilles are designed, allowing for free selection of the air outlet direction

To reduce costs, the entire product set uses 220V mains electricity. Novices without basic circuit knowledge are prohibited from replicating.

To reduce costs, the entire product set uses 220V mains electricity. Novices without basic circuit knowledge are prohibited from replicating.

To reduce costs, the entire product set uses 220V mains electricity. Novices without basic circuit knowledge are prohibited from replicating.

The attachment list link is clickable in the guide PDF file