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Corne Cherry

mornepousse·Niphargus·hardware/pcb-rot/rot.kicad_pcb

Corne Cherry PCB layout, top view — open source ESP32 board by mornepousse
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About the Corne Cherry PCB

Corne Cherry is an open source ESP32 PCB design by mornepousse, published on GitHub under the MIT license. It is a 4-layer board measuring 169.3 × 198.4 mm, with 275 components from 42 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the 1N4148W, NRF24L01_Breakout, SRV05-4, SIP32431DR3 and CH334R. By type, the board carries 74 diodes, 73 resistors, 54 switches, 30 capacitors, 23 ICs and 12 connectors.

It belongs with the keyboards, iot & wireless and power & battery designs in this gallery.

From the project

Niphargus — a slim, indestructible wireless split keyboard. ESP32 + nRF24, wired fallback, and an emergency kit hidden behind the USB port. The successor to the Rouge-Gorge.

Niphargus is a thin, unkillable wireless split keyboard.

- Two self-contained halves — one ESP32-S3-WROOM-1 + nRF24L01+ and a 16340 cell each, matrix scanning in deep sleep (RTC domain), the KeSp dongle on the host side. - Wired fallback — direct USB-C plus a TRRS jack between halves: plugging it back in must be enough. A 5 V handshake on the link makes hot-plug spark-free. - ESD hardening throughout — TVS diodes on USB and TRRS, 100 Ω in series on every matrix line, careful ground planes. The static discharge you bring back to the keyboard will no longer crash it. - Sharp Memory LCD (right…

Corne Cherry, from the project README
From the project README

Main components on the Corne Cherry

1N4148WESP32-S3-WROOM-1NRF24L01_BreakoutSRV05-4SIP32431DR3CH334RUSBLC6-2SC6ESP32P4_QFN104AMS1117-3.3TP4056-42-ESOP8HT7833DW01A

Corne Cherry bill of materials (BOM)

275 components, 42 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
1N4148W
D
U1, U2, U3, U4
2
ESP32-S3-WROOM-1
U5, U6
2
NRF24L01_Breakout
U7, U8
2
SRV05-4
U9, U10
2
SIP32431DR3
SiP32431DR3
U11, U12
1
CH334R
U13
2
USBLC6-2SC6
U14, U15
1
ESP32P4_QFN104
U16
1
AMS1117-3.3
U17
2
TP4056-42-ESOP8
U18, U19
2
HT7833
U20, U21
2
DW01A
U22, U23
2
AO3407
Q1, Q2
2
FS8205
Q3, Q4
2
Conn_02x03_Odd_Even
J1, J2
1
TPS43_FPC
J3
2
Conn_01x05_Pin
J4, J12
2
AudioJack4
J5, J6
2
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J7, J8
1
Micro_SD_Card
J9
Show 22 more
QtyPartRefs
2
Battery
J10, J11
2
Heatsink_Pad
HS1, HS2
1
Heatsink_Pad
HS3
2
Jumper_2_Bridged
JP1, JP2
52
SW_PUSH
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +44
2
C431540
SW_SPDT
SW53, SW54
48
1N4148W
D
D1, D2, D3, D4, D5, D6, D7, D8 +40
2
LED
D49, D50
2
SS14
D51, D52
22
SD05C-01F
D100, D101, D102, D103, D104, D105, D106, D107 +14
9
100NF
100nF
C1, C2, C5, C6, C7, C8, C17, C21 +1
8
1UF
1uF
C3, C4, C9, C10, C14, C18, C27, C28
13
10UF
10uF
C11, C12, C13, C15, C16, C19, C20, C23 +5
10
10K
10k
R1, R2, R33, R34, R54, R55, R56, R57 +2
40
100
R3, R4, R5, R6, R7, R8, R9, R10 +32
2
4.7K
4.7k
R29, R32
5
100K
100k
R35, R42, R43, R60, R61
2
10k
R48, R49
4
5K1
5k1
R50, R51, R52, R53
4
1k
R62, R63, R72, R73
4
1M
R64, R65, R66, R67
2
2K4
2k4
R68, R69

Corne Cherry design files

The KiCad project lives in the mornepousse/Niphargus repository on GitHub; these links point at the commit this page was built from.

Corne Cherry: common questions

What microcontroller does the Corne Cherry use?

The Corne Cherry is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Corne Cherry PCB?

The Corne Cherry measures 169.3 × 198.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Corne Cherry?

275 components, from 42 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 Cherry design files?

From the mornepousse/Niphargus repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

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

Yes, under the terms of its MIT license, which mornepousse chose for the repository.

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

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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