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2 layersBackround, the printed circuit board in 3D

This is my custom Hotswappable Macropad: -

Copper layers
2
Thickness
1.6 mm
Parts
23
Nets
25
Pads
122
Tracks, vias
228, 38
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
6 Aug 2026
Updated
17 Aug 2026

Overview

Backround is an open-source printed circuit board by jeffmc6767, from the jeffmc6767/HS-Macropad repository on GitHub. It is a 2-layer board with 23 parts on 25 nets, routed with 228 tracks and 38 vias.

Its parts include 11 diodes, 9 switches, 2 resistors and 1 IC.

README

README.md

This is my custom Hotswappable Macropad:

This macropad has 9 keys(3x3), 2 rotary encoders and is controlled through a Seeduino Xiao RP2040.

Some images(to come):

Reminding myself where the parts are: https://kailhswitch.net/products/kailh-hot-swap-pcb-socket-diy-mechanical-keyboard-switches?srsltid=AfmBOoou1a8ZSbBuGYF_AU1epghGp4K7qxQYPx9-Ia8cNmjXQ4em4Oea

Screenshot 2026-08-06 at 8 20 57 PMScreenshot 2026-08-07 at 1 48 35 PM Screenshot 2026-08-07 at 1 48 22 PM

BOM: THIS IS IN UNIT PRICE!! 1 seeduino Xiao $9 11 1n4148 Diodes 89¢ 9 Kailh hot swap sockets $1.25 9 Gateron KS-3X10 $14.99 (pack of 35) 2 EC11 rotary encoders(PEC11R-4225F-N0024-ND) $3.5 1 PCB(pack of 5) $11 (global shipping) 1 soldering iron kit $25 PLA matte black $5

Parts

23
QtyValueFootprintReferences
111N4148Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11
9SW_PushPCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2_1.00uSW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9
2RotaryEncoder_SwitchRotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mmR1, R2
1MOUDLE-SEEEDUINO-XIAOcare package:XIAO-Generic-Hybrid-14P-2.54-21X17.8MMU1

Questions

What parts does the Backround use?

23 parts. 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 Backround KiCad files?

From the jeffmc6767/HS-Macropad repository on GitHub, at the commit this page was made from: the board is Kicad Files/backround.kicad_pcb and its schematic Kicad Files/Untitled/Untitled.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Backround design in my own project?

Its repository states no licence, so its author keeps all rights: ask jeffmc6767 before reusing the design.

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