How to Build a Magnetic Stirrer Using parts from an Old Computer

In this video I will show how to use parts from an old computer and a LM317 variable voltage regulator to build a magnetic stirrer plate that is an extremely useful piece of laboratory equipment.

Schematic of circuitry: http://imgur.com/veTAWiD

This is a sister video on how to photography vortices formed in the stirrer; that video can be found here: https://youtu.be/Uh5uP3m8auM
Introduction music contains "Ouroboros" by Kevin MacLeod (incompetech.com)

Видео How to Build a Magnetic Stirrer Using parts from an Old Computer канала 99Chemicals