HardLabs

Corne chocolate

waseemR02·crkbd-lc·pcbs/corne-chocolate/hotswap/corne-chocolate.kicad_pcb

Corne chocolate PCB layout, top view — open source RP2040/RP2350 board by waseemR02

About the Corne chocolate PCB

Corne chocolate is an open source RP2040/RP2350 PCB design by waseemR02, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 277.2 × 107.5 mm, with 164 components from 43 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the NCP1117LPST33T3G, TPD4E05U06DQAR and W25Q128JVSIQ. By type, the board carries 21 switches, 21 LEDs, 16 capacitors, 9 resistors, 4 ICs and 2 connectors.

It belongs with the keyboards designs in this gallery.

From the project

The Corne keyboard is a split keyboard with 3x6 column staggered keys and 3 thumb keys, based on Helix. Crkbd stands for Corne Keyboard.

The Corne keyboard is a split keyboard with 3x6 column staggered keys and 3 thumb keys, based on Helix. Crkbd stands for Corne Keyboard.

- v4 Hotswappable (JP/EN) - v4 Soldering (will be released) - corne-chocolate: for Kailh choc v1 and v2 switches - v4 Hotswappable (JP/EN): - v4 Soldering (will be released)

- corne-classic: for Cherry MX compatible switches - v1 Soldering: (JP/EN) - corne-cherry: for Cherry MX compatible switches - v2 Hotswappable: (JP/EN) - v2 Hotswappable tilting version: (tilting, JP/tilting, EN): - v3 Hotswappable: (JP/EN) - corne-chocolate: for Kailh choc v1 switches…

Main components on the Corne chocolate

RP2040NCP1117LPST33T3GTPD4E05U06DQARW25Q128JVSIQ

Corne chocolate bill of materials (BOM)

164 components, 43 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
NCP1117LPST33T3G
U2
1
TPD4E05U06DQAR
U3
1
W25Q128JVSIQ
U4
1
C91749
12MHz 18pF
Y1
1
TYPE-C-31-M-13C
J1
1
C128994
TRS
J2
25
YS-SK6812MINI-E
EXLED1, EXLED2, rEXLED1, rEXLED2, rLED1, rLED2, rLED3, rLED4 +17
4
C5333465
RotaryEncoder_Switch
EXSW1, EXSW2, rEXSW1, rEXSW2
4
TS-1088R-02026
SMDSW1, SMDSW2, rSMDSW1, rSMDSW2
1
C5333465
SW_Push
SW1
20
C5333465
SW_Push
SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 +12
2
RB521S30T1G
ZD1, rZD1
2
27P
27p
rC1, rC2
9
100N
100n
rC3, rC4, rC7, rC9, rC10, rC12, rC13, rC14 +1
3
1u
rC5, rC8, rC16
2
10U
10u
rC6, rC11
1
1N4148WT
rD1
1
TYPE-C-31-M-13C
rJ1
1
C128994
TRS
rJ2
Show 23 more
QtyPartRefs
2
5.1K
5.1k
rR1, rR2
2
1k
rR3, rR6
2
27
rR4, rR5
2
10K
10k
rR7, rR9
1
5.6K
5.6k
rR8
1
C5333465
SW_Push
rSW1
20
C5333465
SW_Push
rSW2, rSW3, rSW4, rSW5, rSW6, rSW7, rSW8, rSW9 +12
1
RP2040
rU1
1
NCP1117LPST33T3G
rU2
1
TPD4E05U06DQAR
rU3
1
W25Q128JVSIQ
rU4
1
C91749
12MHz 18pF
rY1
21
YS-SK6812MINI-E
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +13
1
1N4148WT
D1
2
27P
27p
C1, C2
9
100N
100n
C3, C4, C7, C9, C10, C12, C13, C14 +1
3
1u
C5, C8, C16
2
10U
10u
C6, C11
2
5.1K
5.1k
R1, R2
2
1k
R3, R6
2
27
R4, R5
2
10K
10k
R7, R9
1
5.6K
5.6k
R8

Corne chocolate design files

The KiCad project lives in the waseemR02/crkbd-lc repository on GitHub; these links point at the commit this page was built from.

Corne chocolate: common questions

What microcontroller does the Corne chocolate use?

The Corne chocolate is built around the RP2040, from the RP2040/RP2350 family.

How big is the Corne chocolate PCB?

The Corne chocolate measures 277.2 × 107.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Corne chocolate?

164 components, from 43 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Corne chocolate design files?

From the waseemR02/crkbd-lc repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Corne chocolate design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which waseemR02 chose for the repository.

Can I test firmware for the Corne chocolate without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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