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2 layers146.1 × 102.9 mmKeyboard2 ctrl, the printed circuit board in 3D

This Git project contains everything that is needed for the construction of split 60 % keyboard. The layout used is a custom one (see layout) base on international qwerty. The project include:

Size
146.1 × 102.9 mm
Copper layers
2
Thickness
1.6 mm
Parts
75
Nets
68
Pads
323
Tracks, vias
711, 78
Pours
2
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
14 Apr 2023
Updated
10 May 2023

Overview

Keyboard2 ctrl is an open-source printed circuit board by Gflinois, from the Gflinois/split-keyboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 146.1 × 102.9 mm with 75 parts on 68 nets, routed with 711 tracks and 78 vias.

It is built around the ATMEGA32U4. Its parts include 4 capacitors and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

1

README

README.md

Split-keyboard

This Git project contains everything that is needed for the construction of split 60 % keyboard. The layout used is a custom one (see layout) base on international qwerty. The project include:

  • pcb files of a proof of concept with 4 switches
  • pcb files of each of the keyboard sides
  • a shopping list for all needed components
  • cad, stl and gcode for the case files (gcode for an ender 3 with a probe)
  • cad, stl and gcode for the keycaps (gcode for an anycubic proton)
  • the driver module to use it on linux
  • the driver module to use it on windows

Layout

big L mec

Electronic specifiactions

This keyboard is a usb-c teather based one (no battey nor wireless connection provided yet). It is powered by an Atmega 328P stolen on an old arduino nano.

Contribution

Contributions to this Git project are welcome! Please submit pull requests to the dev branch and include a detailed description of your changes.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Parts

75
QtyValueFootprintReferences
29DCapacitor_SMD:C_0805_2012MetricD_1, D_2, D_3, D_4, D_5, D_6, D_A1, D_Alt1, D_B1, D_C1, D_Caps1, D_Ctrl1, D_D1, D_E1, D_F1, D_G1 +13
23KEYSWButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBK_1, K_2, K_3, K_4, K_5, K_6, K_A1, K_B1, K_C1, K_D1, K_E1, K_Esc1, K_F1, K_G1, K_Lin1, K_Q1 +7
40.1uCapacitor_SMD:C_0805_2012MetricC1, C2, C3, C4
3KEYSWButton_Switch_Keyboard:SW_Cherry_MX_1.50u_PCBK_Alt1, K_Ctrl1, K_Tab1
210kResistor_SMD:R_0805_2012MetricR_HWB1, R1
2220Resistor_SMD:R_0805_2012MetricR_C1, R_C2
222pCapacitor_SMD:C_0805_2012MetricC_xi1, C_xi2
116pin_padperso:16pin_padpp1
14.7uCapacitor_SMD:C_0805_2012MetricCglob1
1ATMEGA32U4Package_QFP:TQFP-44_10x10mm_P0.8mmCerveau1
1CCapacitor_SMD:C_0805_2012Metric0.1
1KEYSWButton_Switch_Keyboard:SW_Cherry_MX_2.75u_PCBK_Space1
1KEYSWButton_Switch_Keyboard:SW_Cherry_MX_2.25u_PCBK_Shift1
1KEYSWButton_Switch_Keyboard:SW_Cherry_MX_1.75u_PCBK_Caps-Lock1
1SW_PUSHButton_Switch_SMD:SW_SPST_TL3342SW1
1USB_C_Receptacle_USB2.0Connector_USB:USB_C_Receptacle_GCT_USB4085USB_C1
1XTAL_GNDCrystal:Crystal_SMD_SeikoEpson_TSX3225-4Pin_3.2x2.5mm_HandSolderingxital1

Questions

How big is the Keyboard2 ctrl PCB?

It measures 146.1 × 102.9 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Keyboard2 ctrl use?

75 parts, built around the ATMEGA32U4. 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 Keyboard2 ctrl KiCad files?

From the Gflinois/split-keyboard repository on GitHub, at the commit this page was made from: the board is keyboard2_ctrl/keyboard2_ctrl.kicad_pcb and its schematic keyboard2_ctrl (copy)/keyboard2_ctrl.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Keyboard2 ctrl 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).

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