Ying Kun Zhan

Cocot46plus middleplates

Mon, 12 Sep 2022 20:27:58 +0000

I received the middle plates for the Cocot46plus and assembled them. First the bottom side and then the top side. I choose to cut them in milky white acrylic.

The plates are cut from the same material and therefore the OLED cover is too, sadly the OLED is not visible anymore with this cover.

Adding these plates adds a bit weight, which is nice, and it also covers the open space between the switch and bottom plates.

Cocot46plus and RP2040

Fri, 02 Sep 2022 22:38:49 +0000

It was brought to my attention that by feeding 5V to the GPIO pins of the RP2040, with the method I showed in the buildnotes of Cocot46plus, you may cause damage to the GPIO pin and/or reduce the life of the microcontroller.

The GPIO pins of the RP2040 work with 3.3V logic levels and are not tolerant for 5V. By feeding the ADNS-5050 sensor 5V and using it, it will send 5V to the RP2040.

Cocot46plus Keymap

Tue, 30 Aug 2022 13:33:38 +0000

Keymap

I very much like the via keymap of the Charybdis 3x5 created by Charly. It is inspired on Miryoku which I used before changing to this particular layout, it seems to be more pointing device focussed with the pointer layer instead of the mouse layer.

So I wanted to migrate that layout to the Cocot46plus. Since I am not very familiar with the c language, I opted for the easiest solution and that is to borrow the code from the Charybdis and apply everything that is missing from the Cocot46plus.

Cocot46plus build notes

Wed, 24 Aug 2022 21:24:44 +0000

Cocot46plus

I recently received my Cocot46plus kit, which I got via Charly who lives in Japan (many thanks!), which is a Japanese board designed by aki27 with 46 keys in a Corne-like layout, trackball, OLED indicating layer and trackball status, RGB leds, and rotary encoder, intended for a normal 5V Atmega32u4 Pro Micro. This is the first unibody I built and it seemed very interesting because its form, the dedicated mouse buttons, encoder, and the same 34mm trackball which is also used in the Charybdis.

Giving the Kimiko a little upgrade

Tue, 16 Aug 2022 19:29:02 +0000

Some Cirque trackpads came in, so time to give my Kimiko from Keycapsss an upgrade and while I’m at it also replace its microcontroller.

This board was using an Elite-C microcontroller, but as with all Atmega32u4, when you enable enough RGB modes and enable the OLED display, it is going to have storage problems. So I am replacing those with a couple of SparkFun’s Pro Micro RP2040, these use the same pinout as the Elite-C, but are missing the bottom row of pins. Since those weren’t used with this keyboard anyway, that is not gonna be a problem.

Cocot46plus build guide

Thu, 11 Aug 2022 15:27:28 +0000

In anticipation of receiving a Cocot46plus in a couple of days (hopefully), I made a quick translation of its build guide which was only available in Japanese before.

I created a PR and sent a message to the creator on Twitter after which it was quickly reviewed and merged 🙌

Dilemma assembled version 0.2a

Wed, 10 Aug 2022 13:54:36 +0000

Dilemma

A week ago I received my latest project: The Dilemma. It is a low profile keyboard made by BastardKB, which currently has not been fully released yet. The files and BOM are available on GitHub, so it is possible to order them through any PCB manufacturer.

Keyboard builds

Thu, 04 Aug 2022 14:56:22 +0000

I started my split keyboard journey in February 2021 and since then built a fair number of keyboards for myself and for a couple of friends.

Keyboards:

Fingerpunch Ximi

Integrated RP2040 Microcontrollers
Rotary Encoders
DRV2605L Linear Actuator Haptic Feedback Modules
Keliking KLJ-1102 Audio Buzzer
3 Way Thumb Switches
Gazzew U4 Switches
MT3 Pulse Keycaps
Per Key RGB LEDs
Cirque GlidePoint® Circle Trackpad
Trackball (PMW3360 Sensor & Golden Perixx Trackball)
MJF Nylon Case

GEIST’s KLOR

Splinky RP2040 Microcontrollers (Bottom Mounted)
Rotary Encoders
DRV2605L Linear Actuator Haptic Feedback Modules
Keliking KLJ-1102 Audio Buzzer
Chosfox x Kailh Arctic Fox Switches
Per Key RGB LEDs
128x64 OLED Display
MJF Nylon + Acrylic Case

tarohayashi’s Kombucha

XIAO RP2040 Microcontroller
Joystick or Meishi Trackball Module
Chosfox x Kailh Arctic Fox Switches
Per Key RGB LEDs
Scrollwheel

aki27’s Meishi Trackball Module

ATmega32U4 Pro Micro Microcontroller
ADNS5050 Sensor
Gazzew U4 Switches
EVQWGD001 Rotary Encoder
Perixx Trackball
128x32 OLED Display

BastardKB Charybdis Nano

Splinky RP2040 Microcontrollers
Gazzew U4 Switches (Spring swapped with 55g springs and lubed)
DES Keycaps printed in MJF nylon
Per Key RGB LEDs
Custom Spray Painted Galvanized Steel Plates
Neewer Z-Flex Tripod Heads with a Magsafe adapter
Shiny Red Trackball from Perixx

Aurora Sweep (Commissioned)

Nice!Nano v2 Bluetooth Microcontrollers
110 mAh 301230 3.7v Lithium Batteries
Kailh Choc Hot Swap Sockets
Kailh Choc Crystal Red & Pink Low Profile Switches
MBK Legend Glow R2 White Keycaps
2 x Nice!View Memory-in-Pixel display
Aluminum Top Plate

BastardKB Dilemma v2

Integrated RP2040 Microcontrollers
Sunset Kailh Low Profile Choc Switches
MBK Legend Glow R2 White Keycaps
Cirque GlidePoint® Circle Trackpad Curved 35mm
Per Key & Underglow RGB LEDs
3D printed and Acrylic case
Low Profile EC11 Rotary Encoders

Splitkb.com Kyria rev 3

Liatris RP2040 Microcontrollers
Gazzew U4Tx soldered
PBT XVX Profile Keycaps
128x64 OLED Display
Per Key & Underglow RGB LEDs
Polished Stainless Steel Top Plate
Synthetic Sound Dampening Sheet
Frosted Acrylic Bottom Plate
Black Tenting Puck

aki27’s Cocot46plus

Elite-C Microcontrollers
34mm Trackball
Gazzew Boba U4 62g
MT3 Susuwatari Keycaps
Rotary Encoder
128x32 OLED Display
Per Key & Underglow RGB LEDs

BastardKB Dilemma

Integrated RP2040 Microcontrollers
Cirque GlidePoint® Circle Trackpad Curved 35mm
Gazzew Boba U4 62g
NP Profile Blank Keycaps
128x32 OLED Display
PLA Prusament Galaxy 3D Printed Case

BAMFK-1

BAMFK-1 PCB
2 Horizontal Rotary Encoders
Acrylic Case
Piezo speaker
RGB LEDs
Novelkeys Big Switch Pale Blue Clicky

BastardKB Skeletyl

Splinky RP2040 Microcontrollers
Gateron Oil Kings Hand Lubed
Poron Switch Pads
3D Printed Nylon MJF Case & 30 Degree Tenta
3mm Stainless Steel Bottom Plates
DES Profile Blank Keycaps

BastardKB Charybdis 4x6 (Sold)

Splinky RP2040 Microcontrollers
TTC Bluish White
PLA Prusament Galaxy 3D Printed Case & 30 Degree Tent
MT3 Susuwatari Keycaps
Per Key RGB LEDs
Trackball

Corne Cherry V2

Elite-C Microcontrollers
Gazzew Boba U4 Clear 62g
Acrylic Tenting Plates
YMDK Blank Milk Fog OEM Profile Keycaps
Per Key & Underglow RGB LEDs
Hot Swappable

Corne LP Wired

Elite-C Microcontrollers
Kailh Low Profile Choc White
Corne LP Case By Boardsource
MBK Choc Glow Keycaps
Per Key & Underglow RGB LEDs
Hot Swappable

Corne LP Wireless

Nice!Nano V2 Microcontrollers
301228 90mAh Batteries
MSK-12D19 Power Switch
Kailh Low Profile Choc Robin
Corne LP Case By Boardsource
MBK Low Profile Blank Keycap
Hot Swappable

Dumbpad

Atmega32u4 Pro Micro Microcontroller
Kailh Box White
Cherry Profile Keycaps
ALPS Industrial Rotary Encoders
Knurled Metal Encoder Knobs

2% Milk

Atmega32u4 Pro Micro Microcontroller
RGB LED
Kailh Box White
3D Printed Case
DSA Keycaps

Lily58L (Commissioned)

Elite-C Microcontrollers
Gazzew Boba U4 62g
Acrylic Plate Case
128x32 OLED Displays
Per Key RGB LEDs
Hot Swappable

Redox (Commissioned)

Elite-C Microcontrollers
Gazzew Boba U4T 62g
Bamboo case by Falbatech
DSA Profile Keycaps

Kimiko #2 (Commissioned)

Elite-C Microcontrollers
Kailh Box White
Acrylic Plate Case
Cherry Profile Keycaps
128x32 OLED Displays
Per Key RGB LEDs
Hot Swappable

Kimiko #1 (Sold)

Sparkfun Pro Micro RP2040 Microcontrollers
Gazzew Boba U4T 62g
Acrylic Plate Case
Wooden bottom plate
Cherry Profile Keycaps
128x32 OLED Display
Cirque GlidePoint® Circle Trackpad Flat 40mm
Per Key RGB LEDs
Hot Swappable

SplitKB Lily58 KB (Sold)

Elite-C Microcontrollers
Kailh Pro Light Green Clicky Switches
ALPS Industrial Rotary Encoders
Knurled Metal Encoder Knobs
Acrylic Plate Case
DSA Profile Keycaps
128x64 OLED Displays
Underglow RGB LEDs

Hello

Thu, 04 Aug 2022 14:27:45 +0000

My name is Ying Kun Zhan. I have a wife, a son, a few keyboards, and a few 3D printers.

I am a software engineer, mostly backend using Java and Kotlin.

You’ll find me being around my family, play video games, build split mechanical keyboards, or tinker with 3D printers.

Welcome

Mon, 01 Aug 2022 08:35:33 +0000

Welcome to my blog. I’ll be posting here mainly about my keyboard journey, and other things I find interesting.

Ying Kun Zhan

Cocot46plus middleplates

Cocot46plus and RP2040

Cocot46plus Keymap

Keymap

Cocot46plus build notes

Contents:

Cocot46plus

Giving the Kimiko a little upgrade

Cocot46plus build guide

Dilemma assembled version 0.2a

Contents:

Dilemma

Keyboard builds

Keyboards:

Fingerpunch Ximi

GEIST’s KLOR

tarohayashi’s Kombucha

aki27’s Meishi Trackball Module

BastardKB Charybdis Nano

Aurora Sweep (Commissioned)

BastardKB Dilemma v2

Splitkb.com Kyria rev 3

aki27’s Cocot46plus

BastardKB Dilemma

BAMFK-1

BastardKB Skeletyl

BastardKB Charybdis 4x6 (Sold)

Corne Cherry V2

Corne LP Wired

Corne LP Wireless

Dumbpad

2% Milk

Lily58L (Commissioned)

Redox (Commissioned)

Kimiko #2 (Commissioned)

Kimiko #1 (Sold)

SplitKB Lily58 KB (Sold)

Hello

Welcome

Ying Kun Zhan

Cocot46plus middleplates

Cocot46plus and RP2040

Cocot46plus Keymap

Keymap

Cocot46plus build notes

document.addEventListener('DOMContentLoaded', function () { document.querySelectorAll('.gallery-carousel').forEach(function (el) { new Splide(el, { lazyLoad: 'nearby', rewind: true, perPage: 1, gap: '1rem' }).mount(); }); });

Contents:

Cocot46plus

Giving the Kimiko a little upgrade

Cocot46plus build guide

Dilemma assembled version 0.2a

document.addEventListener('DOMContentLoaded', function () { document.querySelectorAll('.gallery-carousel').forEach(function (el) { new Splide(el, { lazyLoad: 'nearby', rewind: true, perPage: 1, gap: '1rem' }).mount(); }); });

Contents:

Dilemma

Keyboard builds

Keyboards:

Fingerpunch Ximi

GEIST’s KLOR

tarohayashi’s Kombucha

aki27’s Meishi Trackball Module

BastardKB Charybdis Nano

Aurora Sweep (Commissioned)

BastardKB Dilemma v2

Splitkb.com Kyria rev 3

aki27’s Cocot46plus

BastardKB Dilemma

BAMFK-1

BastardKB Skeletyl

BastardKB Charybdis 4x6 (Sold)

Corne Cherry V2

Corne LP Wired

Corne LP Wireless

Dumbpad

2% Milk

Lily58L (Commissioned)

Redox (Commissioned)

Kimiko #2 (Commissioned)

Kimiko #1 (Sold)

SplitKB Lily58 KB (Sold)

Hello

Welcome