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2 layers90 × 60 mmHackpad, the printed circuit board in 3D

a 5-key macropad featuring a LEDs, an OLED display, and LEDs

Size
90 × 60 mm
Copper layers
2
Thickness
1.6 mm
Parts
10
Nets
16
Pads
82
Tracks, vias
97, 1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
28 May 2025
Updated
28 May 2025

Overview

Hackpad is an open-source printed circuit board by giragon6, from the giragon6/phrogpad repository on GitHub. It is a 2-layer board of 90 × 60 mm with 10 parts on 16 nets, routed with 97 tracks and 1 via.

It is built around the SK6812. Its parts include 6 switches, 2 diodes and 1 IC. It belongs with the RP2040 boards of this library.

Main components

1

README

README.md

phrogpad

a 5-key macropad featuring a LEDs, an OLED display, and LEDs

Features

  • 3D printed case
  • 128x32 OLED display
  • EC11 rotary encoder
  • 2 WS2812B RGB LEDs
  • 5 keys

CAD model

Made in Fusion360 (can you tell that I don't know how to CAD)

<img src=assets/cad.png alt="CAD model" width="300">

PCB

Made in KiCad, the phrog was traced from a photo of a desert rain frog

Schematic
<img src=assets/schematic.png alt="Schematic" width="300">

PCB
<img src=assets/pcb.png alt="PCB" width="300">

BOM

  • 5x Cherry MX Switches
  • 5x DSA Keycaps
  • 4x M3x16mm screws
  • 4x M3 hex nuts
  • 5x 1N4148 DO-35 Diodes.
  • 2x WS2812B LEDs
  • 1x 0.91" 128x32 OLED Display
  • 1x EC11 Rotary Encoder
  • 1x XIAO RP2040
  • 1x case (2 parts)

Parts

10
QtyValueFootprintReferences
5SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW1, SW2, SW3, SW4, SW6
2SK6812LED_SMD:LED_SK6812_PLCC4_5.0x5.0mm_P3.2mmD1, D2
1OLEDOLED:SSD1306_OLED-0.91-128x32OL1
1RotaryEncoder_SwitchRotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mmSW7
1XIAO-RP2040-DIPOPL:XIAO-RP2040-DIPU1

Questions

How big is the Hackpad PCB?

It measures 90 × 60 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Hackpad use?

10 parts, built around the SK6812. 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 giragon6/phrogpad 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 giragon6 before reusing the design.

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