9g Servo LEGO Technic Compatible Shell
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Description
9g servo (#sg90 #mg90 universal) LEGO Technic component connecting shell, shell size 3 x 4 x 4 LEGO units, with cross adapter, no additional hardware required.
I wanted to add precise angle control to LEGO Technic controls, but the LEGO servo motor is too big and angle control is also difficult, so I decided to use a small servo instead and designed a mini shell that is compatible with Technic pins.
I referenced the designs of some existing brick motors, optimizing the functions and appearance. The size achieves the minimum for a brick shell, and the connection expandability is excellent. Actual tests show a tight connection, but due to differences in personal printers, if it's too tight or loose, you may need to fine-tune the scaling. It is recommended to add two LEGO pins to reinforce the structure.
My 9g servo is controlled using ESP32, and Bambu Lab's CyberBrick is also an excellent control option, which can be achieved without additional programming. If anyone is interested, I will also share LEGO compatible shells for other components later.
Printing suggestions: do not modify the supports, which may cause the adapter to fail printing
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License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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