| Version | PCB manufacturing files | Soldering aids |
|---|---|---|
| Mainboard Original Version | pcb_gerber_main_board_v0.4.zip | soldering_aids_mainboard_v0.4.rar |
| Mainboard with Enhanced Security Patch | pcb_gerber_mainboard_enhanced_security_patch.zip | soldering_aids_mainboard_enhanced_security_patch.rar |
| version | PCB manufacturing files | Soldering aids |
|---|---|---|
| Original version | pcb_gerber_sub_board_v2_2.zip | soldering_aids_sub_board_original_version.rar |
| Hall sensor Version | pcb_gerber_sub_board_hall.zip | soldering_aids_sub_board_hall.rar |
| Version | Firmware | Note | Src |
|---|---|---|---|
| V0.2 | firmwarev0.2.zip | ⭐⭐⭐Recommended for BMCU-A | |
| 1.21.2 | bmcu_firmware_1_21_2.zip | ||
| 1.26 | bmcu_firmware_1_26.zip |
Firmware from this version onwards is adapted to the BMCU-B aka 370 version aka,
also starting to support the P-Series recognising the BMCU as an AMS system.
| Version | Firmware | Note | Src |
|---|---|---|---|
| 2.06 | bmcu_firmware_2_06.zip | For 370 | |
| 2.22 | bmcu_firmware_2_22.zip | ||
| Deprecated | src-bmcu-3-10.zip | ||
| Deprecated | |||
| 3.14 | bmcu_firmware_3_14.zip | ⭐⭐⭐Recommended for BMCU-B aka 370 version | src-bmcu-3-14.zip |
| 3.31 | bmcu_firmware_3_31.rar | Note from author :possible five-way top-out problem, untested |
Firmware from this version adapted to BMCU-C
| Version | Firmware | Note | Src |
|---|---|---|---|
| 4.9 | bmcu_c_firmware_4_9.rar | test firmware | |
| 4.20 | bmcu_c_firmware_4_20.rar | test firmware | |
| 4.23.3 | bmcu_c_firmware_4_23_3.rar | test firmware |
Added P-Series support (still in beta)
Fixed some anomalies that caused excessive resistance in the extrusion head
Added function: press buffer and then the motor enters a short feeding mode to load consumables
Fixed a possible bug with refills.
BMCU-C is supported for the first time, and the secondary board uses Hall sensors to replace photoelectric sensors.
Currently there is a known bug that all channels show material, regardless of whether the subboard is connected or not
The BMCU will now performs buffer jittering at the stage where it cuts off the filament
From this version onwards, the BMCU can automatically detect the direction of motor rotation, eliminating the need to manually reverse the power supply depending on the model/gear being printed.
The BMCU performs a jitter test to determine the motor direction for each channel and logs it the first time the printer is connected after the firmware is flashed.
If this direction needs to be reset, it is necessary to re-flash or remove the motherboard and press reset.
130 Original version by the author
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❤️🔥QTBZ version, adjustable photoelectric block, optimised triangle clutch
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❤️🔥An optimised version collected by Yuekai, almost the author's original design, with the addition of a triangle clutch using springs
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Brackets for A1 and A1 mini, also can be used for early version 370
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370 version official version V2.5:
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❤️🔥370 steel ball version v3.14:
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Brackets for A1 / A1 mini (included in this model):
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The F3D files of the original print files shared by the author are provided here, in case you wish to make additional modifications yourself to the model. Please note that some versions are missing their F3D files.
Missing