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2 layers66 × 87 mmHackpad, the printed circuit board in 3D

A custom macropad I made myself!

Size
66 × 87 mm
Copper layers
2
Thickness
1.6 mm
Parts
25
Nets
21
Pads
70
Tracks, vias
84, 0
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
9 Jun 2026
Updated
22 Sep 2026

Overview

Hackpad is an open-source printed circuit board by fireslash88, from the fireslash88/Slashpad repository on GitHub. It is a 2-layer board of 66 × 87 mm with 25 parts on 21 nets, routed with 84 tracks and 0 vias.

Its parts include 7 diodes, 7 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards of this library.

README

README.md

Slashpad

This is my submission for the Hackpad challenge!

Slashpad is a 6 key macropad with a Rotary Encoder and OLED Display, and uses the QMK Firmware!

image


Inspiration for the name of the pad

I named the pad after my username online! As you can see, my name on github is "fireslash88" and that's pretty much the same for every other account I have online! I have another username that I actually use more than this one but I prefer to use slash now..


BOM

  • 1x Seeed XIAO RP2040
  • 6x Cherry MX Switches
  • 6x Keycaps
  • 1x EC11 Rotary Encoder
  • 1x 0.91 inch OLED display
  • 7x through-hole 1N4148 Diodes
  • 4x M3x16mm screws
  • 1x 3D Printed Case

PCB

This is the PCB I created for the Multipad!

This is the schematic that I created using KiCad 10.0! image

This is the PCB! image


Case

This is the case I modeled in Fusion 360! image


Firmware

The Slashpad uses the QMK firmware for everything! (Will include VIA in the future)


Thanks!

A great thanks to Hack Club to have made this project possible!


Cats

Yes. I love cats so I decided to put some silly cats I found on Pinterest on the PCB. They're pretty and I love them so uhh... Yeah... Cats.. Meow..

Parts

25
QtyValueFootprintReferences
71N4148Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2, D3, D4, D5, D6, D7
6SW_Push3DModelLibrary:SW_Cherry_MX_1.00u_PCBSW1, SW2, SW3, SW4, SW5, SW6
1LOGO3DModelLibrary:cat1G***
1LOGO3DModelLibrary:cat4G***
1LOGO3DModelLibrary:cat7G***
1LOGO3DModelLibrary:cat2G***
1LOGO3DModelLibrary:cat5G***
1LOGO3DModelLibrary:cat3G***
1LOGO3DModelLibrary:cat6G***
1LOGO3DModelLibrary:cat8G***
1MOUDLE-SEEEDUINO-XIAO3DModelLibrary:XIAO-Generic-Hybrid-14P-2.54-21X17.8MMU1
1OLED_DISPLAY3DModelLibrary:SSD1306-0.91-OLED-4pin-128x32J1
1RotaryEncoder_Switch3DModelLibrary:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mmSW7

The 24 most common of 25 parts.

Questions

How big is the Hackpad PCB?

It measures 66 × 87 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Hackpad use?

25 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 Hackpad KiCad files?

From the fireslash88/Slashpad repository on GitHub, at the commit this page was made from: the board is pcb/Hackpad.kicad_pcb and its schematic pcb/Hackpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Hackpad design in my own project?

Its repository states no licence, so its author keeps all rights: ask fireslash88 before reusing the design.

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