A mounting platform for the electronics associated with Asier Marzo's (http://www.instructables.com/id/Acoustic-Levitator/ ) Mini Lev. Two versions are provided for projects with and with out a voltage converter.
A more generalized solution is presented in:
To simplify wiring the Arduino Nano is mounted on a terminal block board. The board allows for assembling the project with out soldering and makes use of the barrel jack on the terminal board to connect to a power supply. I would suggest the fowling wire path.
When using the no voltage converter option just attache the VCC IN on the Nano terminal board to the +12 input on L289N module. Ground to Ground. You can now use an external controlled valuable power supply. Do not exceed +12 volts.
When using the voltage converter option, attach the VCC in on the Nano terminal board to the VCC IN on the voltage converter board. Attach Ground on the Nano terminal board to Ground IN on the voltage converter board. Attach VCC OUT on the Voltage converter board to the +12 input on L289N module. Attach Ground OUT on the Voltage converter module to ground on the +12 input on L289N module. You can now use a fixed voltage power supply (wall wart, not to exceed +12v) to power the Nano and have variable voltage to drive the L289N.
The rest of the wiring stays the same as presented in the original intructable.
In addition to 3d printing the platform you will need a 1/4-20 screw and T-nut to attache it to the extrusion.
These are the links to the boards we used to size the hole placement. (Note: the tolerance on some of the low cost boards is not consistent from batch to batch.)
nano terminal board - https://www.amazon.com/gp/product/B07GP9XZ9F/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
L298N Stepper Motor Driver Controller Board -
DC-DC Boost Step-up Voltage Converter Module -