MagLev Electromagnet Levitator for Arduino
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Pull-up magnetic levitation: a hand-wound electromagnet above a linear Hall sensor holds a neodymium floater in mid-air under an Arduino PD loop, with a printed stand, coil former and electronics bay; refurbished remix of the open-source MagLev-Project by xiaochutan123l.
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Updated at source:
Model information
- Source
- Printables
- Category
- Engineering
- License
- BSD License
# MagLev Electromagnet Levitator for Arduino
A desk-top magnetic levitation stand. A permanent magnet on top of a hand-wound coil pulls a small neodymium "floater" upwards; a linear Hall sensor under the coil watches the floater, and an Arduino Uno runs a fast proportional-derivative loop that pushes the coil just hard enough to keep the floater hanging in free air. Two sketches are included: a basic version where you set the balance point and gains by hand, and an adaptive version that detects when a floater is placed under the coil, learns its balance point and switches the coil off when it is removed.
It is the classic control-systems build: an inherently unstable plant, analog sensing with an op-amp stage, PWM drive of an inductive load through an L298N, and tuning you can feel with your fingers.
What you get in the download:
- the print files for the base, top, lids, pole and coil former, plus the Rhino source model,
- the circuit schematic (PDF and PNG),
- a Build Guide PDF: Arduino setup and sketches first, then printing, coil winding, electronics, assembly, tuning and first levitation,
- a Bill of Material PDF with every purchased part and a shop link per row.
Parts cost is about 15 to 25 USD plus filament and magnet wire.
This is a remix of the MagLev-Project by xiaochutan123l on GitHub, updated and refurbished for modern use with a single Arduino build path, a current-parts Bill of Material and a rewritten English build guide.