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2 layers98.3 × 73 mmAlexey Hackpad, the printed circuit board in 3D

Custom macro pad designed with 7 keys and an encoder.

Size
98.3 × 73 mm
Copper layers
2
Thickness
1.6 mm
Parts
23
Nets
26
Pads
102
Tracks, vias
141, 2
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
4 Jul 2025
Updated
4 Jul 2025

Overview

Alexey Hackpad is an open-source printed circuit board by AlexD717, from the AlexD717/Alexey-Hackpad repository on GitHub, published under the MIT licence. It is a 2-layer board of 98.3 × 73 mm with 23 parts on 26 nets, routed with 141 tracks and 2 vias.

It is built around the SK6812MINI-E. Its parts include 12 diodes, 8 switches and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.

Main components

1

README

README.md

Alexey-Hackpad

Custom macro pad with 7 keys, an encoder, and an LED light bar, using KMK firmware.

Features

  • 7 keys
    • One key to switch between layers, 6 for macros
  • EC11 Rotary encoder with push switch
  • LED Light bar displaying custom status
  • Custom 2-layer PCB

CAD Model

Assembly

cad-assembly

Render

cad-render

PCB Design

This PCB was made in KiCad.

Schematic

pcb-schematic

PCB

pcb-design

Firware

This hackpad uses KMK for its firmware.

  • One switch is in charge of switching layers
  • Other six keys act as custom macros
  • Rotary encoder controls volume and plays/stops music

BOM

  • Seeed XIAO RP2040
  • 7x Cherry MX Switches
  • 7x DSA Keycaps
  • 1x EC11 Rotary encoder
  • 1x Rotary enoder knob (3d-printed)
  • 4x SK6812 MINI-E LEDs
  • 8x Through-hole 1N4148 Diodes
  • 4x M3x5x4 Heatset inserts
  • 4x M3x16mm screws
  • 1x Case (3, 3d-printed parts)

Parts

23
QtyValueFootprintReferences
81N4148Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD5, D6, D7, D8, D9, D10, D11, D12
7SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW1, SW2, SW3, SW4, SW5, SW6, SW8
4SK6812MINILED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mmD1, D2, D3, D4
1LOGOLOGOG***
1RotaryEncoder_SwitchRotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mmSW7
1XIAO-RP2040-DIPOPL:XIAO-RP2040-DIPU1

The 22 most common of 23 parts.

Questions

How big is the Alexey Hackpad PCB?

It measures 98.3 × 73 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Alexey Hackpad use?

23 parts, built around the SK6812MINI-E. 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 Alexey Hackpad KiCad files?

From the AlexD717/Alexey-Hackpad repository on GitHub, at the commit this page was made from: the board is pcb/Alexey-Hackpad.kicad_pcb and its schematic pcb/Alexey-Hackpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Alexey Hackpad 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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