This is a general purpose motorized turntable. Two sizes have been designed, for different space constraints and force outputs. The special feature of this design is that it uses magnets to allow for easy switching of different top plates.

There is a video which has more details and shows how to assemble both sizes:
https://youtu.be/cBNzXSJFYJ8

The different top plates I have included are:

• Basic flat plate
• Plate with many different M3 mounting holes
• Plate that accepts lego pieces

I have included the relevant dimensions and .step files, if you want to design your own custom top plate. These turntables use continuous rotation servos which helps keep the cost very low.

If you like this design, you may also like my generic Linear Servo Actuators:
https://www.thingiverse.com/thing:3170748

Please note that the best way to show your appreciation and keep up to date on my latest 3D printing projects is to head over to my YouTube channel and subscribe!
https://www.youtube.com/potentprintables

Included in the files here are a list of materials for each size, as well as affiliate links for the non 3D printed parts.

STL quantities to print:

Mini version-
Servo Mounting Base, Mini {QTY 1x}
Master Plate, Mini {QTY 1x}

Large version-
Servo Mounting Base, Large {QTY 1x}
Master Plate, Large {QTY 1x}

Adaptor Plates- (print QTY 1X of desired type, for appropriate size turntable)
Flat Attachment Plate
Many Hole Attachment Plate
Lego Attachment Plate

**Special Notes on the Lego Plates:
Legos are manufactured with tight tolerances, especially when compared with the range of 3D printers that exist in the world. Having one STL file that will work across all printers seems very unlikely.

Instead, I have included a zip file for both sizes (mini and large). Within you will find a adaptor plates with a range of lego feature sizes, centered on the nominal diameter of 4.8mm.

So if your printer is perfectly tuned and can produce a 4.8mm diameter feature on the nose, use the file with the “4.8mm” suffix. If not, move up or down diameter sizes as needed.

I have also included some “Test Blocks”, so you can print a 2x6 block to test your printer without having to print a whole Lego Top Plate.