A Headset Match For A Hackaday Author

I began penning this from a commuter practice passing at velocity by the outskirts of London, and my headset had simply damaged. The versatile joint that attaches one earpiece to the headscarf has snapped, leaving the earpiece dangling on its cable. This is annoying by itself, however what’s annoying me sufficient to jot down about it’s that this isn’t the primary time. This is just the most recent in a succession of headsets I’ve taken on the highway with me has damaged, not due to tough remedy, however merely as a consequence of flimsy or dangerous design. What on earth can I do about this?

Failure Built-In

The most up-to-date three have been a JVC whose rotating joint permitting the earpiece to lie at a slight angle with my ear has failed, a fairly costly Logitech whose ear sponges failed carefully adopted by its USB cable, and now an EPOS whose ball joint has failed.

I repaired the JVC and obtained a bit extra life out of it and I’ll have a go at repairing this EPOS, however that’s hardly the purpose. I’m paying not inconsequential cash and I’m getting good sound high quality and electronics, however I’m not getting wherever close to the mechanical high quality I want. I might purchase a set of robust DJ headphones such because the Sennheiser HD25, however they don’t include a microphone, they’re not a headset.

So if I can’t purchase a good headset with out spending army grade cash on one from an F16 fighter, what can I do to make my very own? I’m an engineer, damnit!

At its most elementary, a headset is a springy band that goes over the pinnacle, with an earpiece at its finish. But a human head will not be a dice with vertical parallel sides, it’s a posh form and each one is completely different. So these earpieces must have some “give” in them with a view to match comfortably in opposition to the ear. In the only case that is achieved by giving the earpiece a gentle encompass that moulds itself to the ear, however most headsets incorporate some articulation. The earpiece should rotate just a little round a vertical line parallel with the ear, and in addition with a horizontal line at proper angles to the axis of the ear. The EPOS managed each axes by way of a ball joint, whereas the JVC had a stirrup with pins to realize the horizontal movement, and a round joint — the half which broke — for the vertical. In each case the weak level was a skinny a part of the plastic moulding which broke, on the EPOS a brief stalk for the ball within the ball joint, and within the JVC an identical stalk for the round joint. Any design I give you should keep away from one of these weak level, and unfold the load of an earpiece over significantly extra materials than my damaged headset.

So, How Do I Make This Thing?

For the headscarf I might re-use those I’ve from my damaged headsets, discover one of many many 3D printable designs on-line, or the selection I took, design my very own. And since I can re-use the drivers, microphone, and electronics, except for designing a bodily adaptor to take them, my drawback turns into one in all making a tricky model of that articulated joint. And there my selection is to both replicate the ball or rotating joints of the originals however in a a lot harder type, or to make a one piece design with elasticity and adaptability within the planes I want. It’s time to interrupt out OpenSCAD. I like issues I can print in a single go in the case of builds like this one, as in the case of meeting there may be invariably a weak level the place the completely different components meet. So I’m going for the latter selection, and making my earpiece mount on a spring fairly than a two-piece joint. My spring is a straightforward zig-zag leaf spring, which is each sturdy, and has some motion in X and Y rotational axes, and Z displacement. It’s an OpenSCAD library, and my little take a look at print has all of the compulsive manipulation of a fidget toy.

So with a bit extra OpenSCAD bashing I’ve a sliding print in place headband with my springs hooked up. You can check out it in this GitHub repository, and even modify it for a damaged donor headset of your individual if you would like.As I write this it’s not but printed, the 3D printer gods haven’t smiled upon me with further velocity. Will my artful print in place springs resolve the issue? At least in the event that they break I’ve solely myself accountable.