Cooperative BMCU PCB Purchase
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Fully assembled BMCU
Partially assembled BMCU
BMCU on A1 Mini filament spool mount
Introduction (as translated from https://oshwhub.com/bamboo-shoot-xmcu-pcb-team/bmcu)
BMCU is designed based on open source data, the protocol introduction of bambubus on Github, and the reference data provided by netizens, so we designed a system that simulates AMS operation, suitable for A series printers. BMCU is specialized on AMCU, and many designs refer to the working principle of AMS lite that can be found on the Internet.
Because its design uses a lot of open source content and its functions are too similar to AMS lite, BMCU is open source and not allowed to be commercialized. It is only for personal DIY learning use.
Features of BMCU
1. The material does not need to be returned to the material break detection like AMCU, but can be returned to the five-way, and the material switching speed is faster.
2. Side-by-side structure, no rack included, which means you can put the consumables in a sealed box and let it feed your printer
3. It has a buffer that can actively feed the material before the printer triggers the winding of the material, preventing problems caused by excessive resistance of the consumables
4. Device standardization. When designing machinery, we set many components to unified parameters, which increases the success rate of one-time DIY and prevents cost increase.
5. BMCU has explored the photoelectric detection design, which allows the photoelectric switch to detect transparent consumables, eliminating the resistance and instability of consumables caused by the micro-motion detection method. The photoelectric design will use other open source protocols separately, allowing borrowing
Other notes
Attachment: BMCU integrated package file, which contains all the files required for BMCU manufacturing, including parts list, print STL file, and purchase link for developers to use (English translated version is here, includes PCB Gerber files, STL files, BOM for other parts)
Note: Before choosing a component purchase source, please check whether the package and other parameters are consistent with those of the recommended version.
The rest of the guide, including the source code for firmware, will be open sourced on gitee at: https://gitee.com/at_4061N/BMCU
KEEP IN MIND, THIS IS AN OPEN SOURCE PROJECT, I DID NOT DEVELOP IT. I AM JUST GOING BY TRANSLATED DIRECTIONS THE SAME AS YOU, THERE IS NO GUARANTY THAT THIS EVEN WORKS, OR THAT ANYONE WILL SUCCESSFULLY BUILD IT, ALTHOUGH BASED ON MY RESEARCH, I REASONABLY BELIEVE THAT IT DOES WORK, AND BELIEVE THAT THERE IS SUFFICIENT INFORMATION AVAILABLE TO BUILD IT. THERE ARE NO ASSEMBLY INSTRUCTIONS AVAILABLE TO US AT THIS TIME, SO SOME OF THIS IS SIMPLY COMMON SENSE AND INTUITION AT THIS POINT.