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4 layers278 × 93.5 mmCorne cherry, the printed circuit board in 3D

corne-like wireless keyboard, WIP

Size
278 × 93.5 mm
Copper layers
4
Thickness
1.6 mm
Parts
244
Nets
232
Pads
1,278
Tracks, vias
2,116, 385
Pours
449
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
19 Aug 2024
Updated
19 Aug 2024

Overview

Corne cherry is an open-source printed circuit board by yangxing844, from the yangxing844/corne-wireless repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 278 × 93.5 mm with 244 parts on 232 nets, routed with 2,116 tracks and 385 vias.

It is built around the BQ24075RGT, XC6220B331MR and PMEG4010CEJ, with the AO3401A, BSMD0603-050-12V and GT-TW084A-H015-L1 among its other parts. Its parts include 58 capacitors, 46 switches, 18 resistors, 10 diodes and 10 connectors. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.

Main components

6

Parts

244
QtyValueFootprintReferences
48YS-SK6812MINI-Ekbd:YS-SK6812MINI-EEXLED1, EXLED2, EXLED3, LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20 +32
42SW_Pushkbd:keyswitch_cherrymx_hotswap_1uSW1, SW2, SW3, SW4, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21 +26
164.7uFfootprints:Capacitor_0402_1005M-nosilkC7, C8, C19, C22, C23, C24, C28, C30, C31, C34, C48, C50, C51, C53, C54, C58
12PADfootprints:TestPoint_Pad_1.0x1.0mm-nosilkTP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12
10100nFfootprints:Capacitor_0402_1005M-nosilkC3, C20, C25, C26, C27, C37, C46, C55, C56, C57
815pFfootprints:Capacitor_0402_1005M-nosilkC1, C2, C15, C17, C42, C43, C44, C45
81uFfootprints:Capacitor_0402_1005M-nosilkC9, C16, C21, C29, C32, C47, C49, C59
610kfootprints:Resistor_0402_1005M-nosilkR9, R11, R12, R16, R18, R19
6PMEG4010CEJfootprints:D_SOD-323F-nosilkD1, D2, D5, D7, D8, D10
40Rfootprints:Resistor_0402_1005M-nosilkR3, R5, R7, R8
41.5pFfootprints:Capacitor_0402_1005M-nosilkC11, C12, C38, C41
410uHfootprints:Inductor_0603_1608M-nosilkL2, L3, L6, L7
41pFfootprints:Capacitor_0402_1005M-nosilkC13, C14, C39, C40
4RotaryEncoder_Switchkbd:keyswitch_cherrymx_hotswap_1u_rotary_encoder_ec12EXSW1, EXSW3, rEXSW1, rEXSW3
4SW_SPSTButton_Switch_SMD:SW_SPDT_PCM12SW22, SW23, SW24, SW25
21.5kfootprints:Resistor_0402_1005M-nosilkR13, R14
2100pFfootprints:Capacitor_0402_1005M-nosilkC4, C36
210uFfootprints:Capacitor_0603_1608M-nosilkC18, C52
215nHfootprints:Inductor_0402_1005M-nosilkL1, L5
21nFfootprints:Capacitor_0402_1005M-nosilkC5, C35
22Mfootprints:Resistor_0402_1005M-nosilkR4, R20
23.9kfootprints:Resistor_0402_1005M-nosilkR10, R17
23.9nHfootprints:Inductor_0402_1005M-nosilkL4, L8
232.768 kHzfootprints:Crystal_SMD_2012-2Pin_2.0x1.2mmY2, Y4
232MHzfootprints:Crystal_SMD_2016-4Pin_2.0x1.6mmY1, Y3
247nFfootprints:Capacitor_0402_1005M-nosilkC10, C33
2500mA holdfootprints:Fuse_0402_1005MetricF2, F5
2AO3401APackage_TO_SOT_SMD:SOT-23Q1, Q2
2Antennakbd:BWIPX-1-001EAE2, AE3
2Antennafootprints:2.4GHz-meander-antenna-v2AE1, AE4
2BLUEfootprints:LED_0402_1005Metric-nosilkD4, D6
2BQ24075RGTfootprints:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mmU7, U8
2BSMD0603-050-12VFuse:Fuse_0603_1608MetricF3, F4
2Conn_01x02Connector_JST:JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_HorizontalJ2, J9
2Conn_01x03Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ4, rJ4
2Conn_01x04kbd:Jushuo_AFC07-S04FCA-00_1x4-1MP_P0.50_HorizontalJ6, J8
2Conn_01x05_Socketkbd:nice_viewJ7, J10
2Conn_01x06_SocketConnector_FFC-FPC:Jushuo_AFC07-S06FCA-00_1x6-1MP_P0.50_HorizontalJ11, J12
2GT-TW084A-H015-L1kbd:PushSwitchrSMDSW1, rSMDSW3
2LOGOkbd:wingG***, G***
2MAX17048footprints:TDFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.2mmU4, U6
2NetTie_2footprints:net-tie-2-tinyNT1, NT2
2ORANGEfootprints:LED_0402_1005Metric-nosilkD3, D9
2RotaryEncoder_Switchkbd:keyswitch_cherrymx_hotswap_1uEXSW2, rEXSW2
2XC6220B331MRfootprints:SOT-23-5U5, U9
2nRF52840footprints:AQFN-73-1EP_7x7mm_P0.5mm_NRF52840-customU1, U2
1100Rfootprints:Resistor_0402_1005M-nosilkR15
1100RResistor_SMD:R_0603_1608MetricR6

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Questions

How big is the Corne cherry PCB?

It measures 278 × 93.5 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Corne cherry use?

244 parts, built around the BQ24075RGT, XC6220B331MR, PMEG4010CEJ and AO3401A. 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 Corne cherry KiCad files?

From the yangxing844/corne-wireless repository on GitHub, at the commit this page was made from: the board is corne-cherry.kicad_pcb and its schematic corne-cherry.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

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

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).