Galvanometers are the basis of volt meters and ammeters. They can be quite cheap. eg: DC0-5A Analog Current Panel Meter Tester Ammeter Gauge Sales Online white - Tomtop
They're also used for aiming lasers, sold as "galvos", and are typically quite expensive.
I'm looking to find the midpoint: cheap galvos.
They're not complicated: one or more coils of wire on an axle, in a magnetic field, with some kind of spring to make it return to a zero point.
I'm starting with 3d printed parts. iron cores make for better electromagnets, but they're not necessary, so I'm going all plastic. This is my first print. The parts don't fit as well as I want, so I'll have to do a rev 2...
Build in 'Everything Else' published by MTO, Sep 19, 2018.
3d printable galvos
- Build License:
- CC - Attribution Share Alike - CC BY SA
Reason for this BuildI thing galvos could/should be cheaper and more accessible.