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geekhack Community => Keyboards => Topic started by: CryHam on Thu, 27 August 2020, 12:44:53

Title: K.C.4 controller for Teensy 4.0. Editing on display. Crystal Keyboard CK9
Post by: CryHam on Thu, 27 August 2020, 12:44:53

Like before, I present here my newest keyboard controller firmware K.C.4 ("Kacey").
It allows editing everything like key mappings, layers, sequences/macros in real time on its display.
Now it is for Teensy 4.0 with a 320x240, 2.8" LCD display using ILI9341.
Full description on my website (https://cryham.org/portfolio/2020-kc4-controller/). Shorter with sources here (https://codeberg.org/cryham/kc4).

Pictures and screens in  gallery here (https://photos.app.goo.gl/RqaZoXTfGbprimJdA).
A quick video (more on my channel (https://www.youtube.com/channel/UC9-gc9xgEeuSSKB8_dESLGw)).

My previous one (https://geekhack.org/index.php?topic=96727) was for Teensy 3.2 and 160x128 1.8" display. A bit cheaper solution that already did it all.
The new one is nicer to look at and use. Full comparison between them on my website (https://cryham.org/portfolio/2020-kc4-controller/).

Of course like all my keyboards I use since 2005 it features the rubber dome reduction, topic here (https://geekhack.org/index.php?topic=81368.msg2139633#msg2139633).

Title: Re: K.C.4 controller for Teensy 4.0. Crystal Keyboard CK9
Post by: CryHam on Sat, 24 May 2025, 18:57:29

Still working great after almost 5 years now.
Updated links in first post, for my new website and sources now on codeberg.