2 layers45.7 × 31.8 mm
LEDx16 board
tardate/LittleArduinoProjects
a collection of "Little Electronic & Arduino Projects", most involving electronics or an Arduino in one way or another!
36 parts803MIT
2 layers239.6 × 114.8 mm
Koepckeae
ssbb/koepckeae1434 key unibody split with splay and spaced out thumbs
- Size
- 239.6 × 114.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 64
- Pads
- 448
- Tracks, vias
- 511, 25
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 4 Nov 2023
- Updated
- 29 Aug 2024
Overview
Koepckeae is an open-source printed circuit board by ssbb, from the ssbb/koepckeae repository on GitHub, published under the MIT licence. It is a 2-layer board of 239.6 × 114.8 mm with 49 parts on 64 nets, routed with 511 tracks and 25 vias.
It is built around the 74HC595. Its parts include 36 switches, 3 connectors and 2 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
Main components
1README
README.mdkoepckeae
koepckeae is a 34-key unibody split keyboard higihly inspired by Pete Johanson's Zaphod Lite, featuring hotswap support, splay, and spaced out thumbs.
BOM
| Qty | Name | Source |
|---|---|---|
| 1 | PCB | gerbers |
| 1 | XIAO nRF52840 | Digikey |
| 1 | 74HC595D shift register (SOIC-16) | LCSC |
| 1 | PCM12 power switch | LCSC |
| 1 | Panasonic EVQPUC02K reset button | LCSC |
| 2 | 1x1 Mill-Max Spring Loaded Header (0906-2-15-20-75-14-11-0) | Digikey |
| 2 | 1x7 Mill-Max Header (310-43-107-41-001000) | Digikey |
| 1 | JST PH-2.0 battery socket | LCSC |
| 1 | 702025 300 mAh battery | |
| 34 | 1N4148W diode | LCSC |
| 34 | Kailh Choc hotswap sockets | Aliexpress |
Max battery dimensions are 29mm x 21mm x 8mm. Ideally get a battery with JST connector but double check polarity on PCB.
Plate case
Display
| Qty | Name | Source |
|---|---|---|
| 1 | Adafruit Sharp Memory Display | Adafruit |
| 1 | 1x5 Mill-Max Spring Loaded Header (825-22-005-10-001101) | Digikey |
| 4 | M2.5x6 male-female nylon standoff | Aliexpress |
| 4 | M2.5 nylon nut | Aliexpress |
| 4 | M2.5x6 nylon screw | Aliexpress |
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | PG1350 | koepckeae:SW_choc_v1_HS_1u | K1, K2, K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K20, K21, K22, K23 +18 |
| 8 | MountingHole | koepckeae:MountingHole | H1, H2, H3, H4, H5, H6, H7, H8 |
| 1 | 74HC595 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | Conn_01x02_Socket | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J3 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x09_Socket | koepckeae:Adafruit_Sharp_Memory_Display_1.3in | J1 |
| 1 | SW_Push | Button_Switch_SMD:Panasonic_EVQPUL_EVQPUC | SW1 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW2 |
| 1 | Seeeduino Xiao nRF52840 | koepckeae:Xiao_nRF52840_AH_Pogo | U1 |
Questions
How big is the Koepckeae PCB?
It measures 239.6 × 114.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Koepckeae use?
49 parts, built around the 74HC595. 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.
Where can I download the Koepckeae KiCad files?
From the ssbb/koepckeae repository on GitHub, at the commit this page was made from: the board is pcb/choc/koepckeae.kicad_pcb and its schematic pcb/choc/koepckeae.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Koepckeae design in my own project?
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).
Similar boards
- 2 layers228.6 × 100 mm
Mongus48
ChrisChrisLoLo/beyblock20
The magnetic, modular, 20-key macropad that can join together to form an ortholinear board
124 parts335GPL-3.0 - 2 layers245.1 × 160 mm
8-Bit CPU 32k
slu4coder/Minimal-64x4-Home-Computer
My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.
139 parts326 - 2 layers100 × 95.1 mm
Protoboard-6x4-breakout
electroniceel/protoboard
Advanced protoboard layout with 1.27mm pitch for smd parts
4,745 parts311CC-BY-4.0 - 4 layers140 × 100 mm
Dc usv
TobleMiner/DC-UPS
A small DC UPS, designed to keep small appliances like consumer network equipment running during power outages
351 parts223CERN-OHL-P-2.0 - 2 layers100.5 × 218.3 mm
- 2 layers287.8 × 126.7 mm
- 2 layers100 × 100 mm
