Uniquely Designed
I liked the idea of a modern-looking turntable with a floating platter, and set out to design one myself. I had nice piece of tulip wood from an old jewelry box that had fallen into disrepair.
The project used a low-end Jensen JTA 230 as a starting point- a known template with dimensions and parts known to work and easy to find.
The only original parts:
- Motor
- Stylus
- Rubber band
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3D Printable Parts
The record player was designed in Autodesk Fusion 360 and printed on an Ultimaker 2. The platter and legs require a fairly large build area, and just fit on the Ultimaker's 22.3cm x 22.3cm build plate.
The STL files are available for download on Thingiverse.
Electronics
The electronics that control the motor speed and turntable pre-amplifier were designed in Eagle cad. The PCB is mounted beneath the body.
It uses a LM386 amplifier, a common and easy-to-use op-amp. The board uses all through-hole parts for easy soldering.
Includes:
- Motor control with speed adjust
- Phono preamplifier with bass-boost
- RCA-out
- Support for auto-stop
The schematics are available on GitHub.
Want to build one?
It's still a work-in-progress, so feel free to reach out if you'd like some help or want to get involved.