
Mysterium pcb
coseyfannitutti/mysterium
TKL keyboard that can be entirely assembled using only through hole components, including usb type-c

The 2nd revision of the LCK75, this is updated to have support for ISO and split backspace layout options
LCK75 is an open-source printed circuit board by lyso1, from the lyso1/LCK75v3 repository on GitHub, published under the MIT licence. It is a 2-layer board of 317.3 × 154.8 mm with 208 parts on 132 nets, routed with 1,094 tracks and 44 vias.
It is built around the ATMEGA32A-PU. Its parts include 95 switches, 88 diodes, 7 resistors, 5 capacitors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
KiCad Libraries of keyboard switch footprints

The library was overhauled on June 1st, 2019 due to its aging structure and contents.
I'll be more than happy to make more custom footprints to fit your needs, time permitting. Simply contact me via Discord @ai03#2725, or twitter @ai03_2725.
Feel free to create pull requests with more footprints. I only ask that they are of high quality, and that they are based on official dimensions, if possible.


| Qty | Value | Footprint | References |
|---|---|---|---|
| 85 | 1N4148 | cftkb:D_DO-35_SOD27_P5.08mm_Horizontal | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +69 |
| 74 | SW_SPST | MX_Only:MXOnly-1U-NoLED | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +58 |
| 6 | SW_SPST | MX_Only:MXOnly-1.5U-NoLED | SW31, SW44, SW82, SW83, SW88, SW89 |
| 4 | SW_SPST | MX_Only:MXOnly-1.25U-NoLED | SW62, SW78, SW79, SW80 |
| 2 | 0.1u | cftkb:C_Disc_D4.3mm_W1.9mm_P5.00mm | C4, C5 |
| 2 | 22p | cftkb:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2 |
| 2 | 3.6V | cftkb:D_DO-35_SOD27_P5.08mm_Horizontal | D83, D84 |
| 2 | 5.1k | cftkb:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R5 |
| 2 | 75R | cftkb:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R4 |
| 2 | SW_PUSH-keyboard_parts | cftkb:SW_PUSH_6mm | SW87, SW91 |
| 2 | SW_SPST | MX_Only:MXOnly-2.25U-NoLED | SW60, SW63 |
| 2 | SW_SPST | MX_Only:MXOnly-1.75U-NoLED | SW47, SW75 |
| 1 | 1.5K | cftkb:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7 |
| 1 | 1.5k | cftkb:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 10k | cftkb:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R6 |
| 1 | 4.7u | cftkb:CP_Radial_D4.0mm_P1.50mm | C3 |
| 1 | 500mA | cftkb:polyfuse_5.1mm | F1 |
| 1 | ATmega32A-PU | cftkb:DIP-40_W15.24mm | U1 |
| 1 | AVR-ISP-6 | cftkb:AVR_ICSP_3x2 | J1 |
| 1 | Crystal | cftkb:Crystal_HC49-4H_Vertical | Y1 |
| 1 | LOGO | silky:2-lck | G*** |
| 1 | OLED | cftkb:ssd1306 128x32 oled | SSD1306 |
| 1 | POWER | cftkb:LED_D3.0mm | LED1 |
| 1 | Rotary_Encoder_Switch | cftkb:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm-new | SW93 |
| 1 | SW_SPST | MX_Only:MXOnly-7U-ReversedStabilizers-NoLED | SW81 |
| 1 | SW_SPST | MX_Only:MXOnly-6.25U-ReversedStabilizers-NoLED | SW90 |
| 1 | SW_SPST | MX_Only:MXOnly-2U-NoLED | SW29 |
| 1 | SW_SPST | MX_Only:MXOnly-ISO-ROTATED-ReversedStabilizers-NoLED | SW92 |
| 1 | Type-C_USB_C_GCT_USB4085 | Connector_USB:USB_C_Receptacle_GCT_USB4085 | USB1 |
The 202 most common of 208 parts.

coseyfannitutti/mysterium
TKL keyboard that can be entirely assembled using only through hole components, including usb type-c




null-ll/basketweave
Through-hole Alice-style keyboard with arrow keys and a rotary encoder


lyso1/LCK75
a 75% through-hole keyboard designed by myself with inspiration from the CFTKB Discipline and Yiancar Gingham

dsanchezseco/punk75
Ortholinear keyboard with 75 keys and all components through hole
It measures 317.3 × 154.8 mm and has 2 copper layers, 1.6 mm thick.
208 parts, built around the ATMEGA32A-PU. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the lyso1/LCK75v3 repository on GitHub, at the commit this page was made from: the board is LCK75 kicad libs/LCK75.kicad_pcb and its schematic LCK75 kicad libs/LCK75.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).