Corne chocolate
About the Corne chocolate PCB
Corne chocolate is an open source RP2040/RP2350 PCB design by yangxing844, published on GitHub. It is a 2-layer board measuring 277.2 × 107.5 mm, with 162 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, 7 resistors, 4 ICs and 2 connectors.
It belongs with the keyboards designs in this gallery.
From the project
this stores some of my files for keyboards building
The Corne keyboard is a split keyboard with 3x6 column staggered keys and 3 thumb keys, based on Helix. Crkbd stands for Corne Keyboard.
- 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 - v2 Hotswappable: (JP/EN): - corne-light: for easy build with a simple PCB - v1 Soldering: (JP/EN): - v2 Soldering: (JP/EN):
Main components on the Corne chocolate
Corne chocolate bill of materials (BOM)
162 components, 43 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | NCP1117LPST33T3G | SOT-223-3_TabPin2 | U2 |
| 1 | TPD4E05U06DQAR | USON-10_2.5x1.0mm_P0.5mm | U3 |
| 1 | W25Q128JVSIQ | SOIC-8_5.23x5.23mm_P1.27mm | U4 |
| 1 | C91749 12MHz 18pF | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | TYPE-C-31-M-13C | TYPE-C-31-M-13C | J1 |
| 1 | ST-0277D00-052-142 | ST-0277D00-052-142 | J2 |
| 25 | YS-SK6812MINI-E | YS-SK6812MINI-E | EXLED1, EXLED2, rEXLED1, rEXLED2, rLED1, rLED2, rLED3, rLED4 +17 |
| 4 | C5333465 RotaryEncoder_Switch | keyswitch_choc12_hotswap_1u_rotary_encoder_ec12 | EXSW1, EXSW2, rEXSW1, rEXSW2 |
| 1 | BSMD0603-050-12V | Fuse_0603_1608Metric | F1 |
| 4 | TS-1088R-02026 | TS-1088R-02026 | SMDSW1, SMDSW2, rSMDSW1, rSMDSW2 |
| 1 | C5333465 SW_Push | keyswitch_choc12_hotswap_1.5u | SW1 |
| 20 | C5333465 SW_Push | keyswitch_choc12_hotswap_1u | SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 +12 |
| 2 | ESD5Z5V0C | D_SOD-523 | ZD1, rZD1 |
| 2 | 27P 27p | C_0402_1005Metric | rC1, rC2 |
| 9 | 100N 100n | C_0402_1005Metric | rC3, rC4, rC7, rC9, rC10, rC12, rC13, rC14 +1 |
| 3 | 1u | C_0402_1005Metric | rC5, rC8, rC16 |
| 2 | 10U 10u | C_0402_1005Metric | rC6, rC11 |
| 1 | 1N4148WT | D_SOD-523 | rD1 |
| 1 | BSMD0603-050-12V | Fuse_0603_1608Metric | rF1 |
Show 23 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TYPE-C-31-M-13C | TYPE-C-31-M-13C | rJ1 |
| 1 | ST-0277D00-052-142 | ST-0277D00-052-142 | rJ2 |
| 2 | 5.1K 5.1k | R_0402_1005Metric | rR1, rR2 |
| 2 | 1k | R_0402_1005Metric | rR3, rR6 |
| 2 | 27 | R_0402_1005Metric | rR4, rR5 |
| 1 | 10K 10k | R_0402_1005Metric | rR7 |
| 1 | C5333465 SW_Push | keyswitch_choc12_hotswap_1.5u | rSW1 |
| 20 | C5333465 SW_Push | keyswitch_choc12_hotswap_1u | rSW2, rSW3, rSW4, rSW5, rSW6, rSW7, rSW8, rSW9 +12 |
| 1 | RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | rU1 |
| 1 | NCP1117LPST33T3G | SOT-223-3_TabPin2 | rU2 |
| 1 | TPD4E05U06DQAR | USON-10_2.5x1.0mm_P0.5mm | rU3 |
| 1 | W25Q128JVSIQ | SOIC-8_5.23x5.23mm_P1.27mm | rU4 |
| 1 | C91749 12MHz 18pF | Crystal_SMD_3225-4Pin_3.2x2.5mm | rY1 |
| 21 | YS-SK6812MINI-E | YS-SK6812MINI-E | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +13 |
| 1 | 1N4148WT | D_SOD-523 | D1 |
| 2 | 27P 27p | C_0402_1005Metric | C1, C2 |
| 9 | 100N 100n | C_0402_1005Metric | C3, C4, C7, C9, C10, C12, C13, C14 +1 |
| 3 | 1u | C_0402_1005Metric | C5, C8, C16 |
| 2 | 10U 10u | C_0402_1005Metric | C6, C11 |
| 2 | 5.1K 5.1k | R_0402_1005Metric | R1, R2 |
| 2 | 1k | R_0402_1005Metric | R3, R6 |
| 2 | 27 | R_0402_1005Metric | R4, R5 |
| 1 | 10K 10k | R_0402_1005Metric | R7 |
Corne chocolate design files
The KiCad project lives in the yangxing844/keyboard 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?
162 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 yangxing844/keyboard 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?
The repository has no license, so all rights stay with yangxing844. Use it as a reference, and ask the author before reusing the design.
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.
More boards in keyboard
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Nordic nRFMikoto
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RP2040/RP2350Mikoto flashbed
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