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2 layers75 × 79.7 mmHackpad, the printed circuit board in 3D

hackpad for blueprint

Size
75 × 79.7 mm
Copper layers
2
Thickness
1.6 mm
Parts
15
Nets
23
Pads
80
Tracks, vias
105, 1
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
23 Mar 2026
Updated
3 Apr 2026

Overview

Hackpad is an open-source printed circuit board by K-116, from the K-116/V1Macropad repository on GitHub. It is a 2-layer board of 75 × 79.7 mm with 15 parts on 23 nets, routed with 105 tracks and 1 via.

It is built around the SK6812MINI-E. Its parts include 7 diodes, 6 switches, 1 IC and 1 connector. It belongs with the RP2040 boards of this library.

Main components

1

README

README.md

K116's hackpad

this is my hackpad for blueprint, I added an oled, button and rotary encoder to the project. I used FreeCad and Tinkercad instead on Fusion360 the project file is avaliable here

Here is a my 3d design

image image

Schematic and PCB

image Screenshot 2026-03-21 220216

Main takeaways

This project was definitely a learning experience, this was my first ever pcb and was my first time ever using KICAD. Although the tutorial used fusion 360, I learned that FreeCAD was much easier for me so I used that. I watched alot of Youtube videos to get the basics of KICAD (schematics, matrix, pcb routing) although connecting the 3d models to the components was a great challenge.

The main goal I had in mind was to make a Macropad that could adjust volume with the rotary encoder, link to youtube videos/music with the top two keys and copy,paste &select all with the bottom three. I designed the case to expose the pcb as I like to see my work and so I could fix any issues. :)

Final

I will make an additional section when I get the macropad!

made with ❤️ for blueprint

Parts

15
QtyValueFootprintReferences
6DDiode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2, D3, D5, D6, D9
5SW_Push_45degButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW7, SW8, SW9, SW10, SW11
1OLED_DISPLAYoled:SSD1306-0.91-OLED-4pin-128x32(1)J1
1RotaryEncoder_SwitchRotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mmSW1
1SK6812MINI-ELED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mmD4
1XIAO-RP2040-DIPSeeed Studio XIAO Series Library:XIAO-RP2040-DIPU2

Questions

How big is the Hackpad PCB?

It measures 75 × 79.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Hackpad use?

15 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 Hackpad KiCad files?

From the K-116/V1Macropad 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 K-116 before reusing the design.

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