Illustrated Kristina with an IBM Model M keyboard floating between her hands.

Keebin’ With Kristina: The One With The Ultra-Thin Split

But sir, it is wafer-thin. That’s how they get you! Just when you couldn’t possibly justify building another keyboard, let alone owning one, along comes the Kambala by [aroum2].

A wafer-thin keyboard in triple black.
Image by [aroum2] via reddit
Now, ‘Kambala’ means a few things, but here it refers to fish, as evidenced by logo and matching themed PCB key chain shown in the gallery.

This catch is so flat because of the switches: PG1316S, and 42 of them. These are better known to some as Kailh butterfly switches, and are meant for laptops. But, this is Hackaday.

No matter what you call them, those switches are controlled by a nice!nano V2-compatible controller, which allows for ZMK firmware support. There’s a 110 mAh battery and four status LEDs, and best of all, the charging indicator is in the fish’s eyes.

[aroum2] might share the files later. Here’s hoping!

Continue reading “Keebin’ With Kristina: The One With The Ultra-Thin Split”

Illustrated Kristina with an IBM Model M keyboard floating between her hands.

Keebin’ With Kristina: The One With The Wafer-Thin Keyboard

The mikecinq, an incredibly slim keyboard.
Image by [dynam1keNL] via reddit
But sir! I can’t believe I missed [dynam1keNL]’s initial flat offering from about a year ago, the mikefive, which came about when he and some friends ordered switches directly from Kailh and Kailh were like, do you want to try these even lower-profile PG1316 laptop switches? It’s called the mikefive because it’s 5 mm thick.

That’s okay, though, because now you’re caught up and I can talk about his latest keyboard, the mikecinq. The inspiration for this one includes the aesthetics of Le Chiffre and the slimness of Le Oeuf. As you’ll see in the gallery, the top is ever-so-slightly slanted downward from the top.

You can see it really well in the second picture — the top row is flush with the case, and the keys gradually get taller toward the thumb clusters. All [dynam1keNL] really had to do was 3D model the new case and screw in the PCB from his daily driver mikefive.

Image
Image by [dynam1keNL] via reddit
[dynam1keNL] ultimately found it nice and comfy, especially for the thumbs, but decided to take it one step further and designed a new switch footprint. Why? The PG1316s are surface-mount with contacts below the switch, so you really need a hotplate or oven to mount them.

So in order to deal with this, he made a dedicated mikecinq PCB with big cutouts with castellated holes beneath each switch. Now, the switch contacts are accessible from underneath and can be soldered with an iron.

You may have noticed that the mikefive production files are not available on GitHub — that’s because it was recently licensed and will be available soon. But if you want production files for the mikecinq, let him know in the comments.

Continue reading “Keebin’ With Kristina: The One With The Wafer-Thin Keyboard”