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2 layers19.1 × 57.2 mmPCB T1, the printed circuit board in 3D

This is my first try on trying to make a hackpad, so this has the PCB design and the case design. It's a three-switch hackpad, so it's a simple design, nothing special to it, just my first time doing it.

Size
19.1 × 57.2 mm
Copper layers
2
Thickness
1.6 mm
Parts
4
Nets
14
Pads
29
Tracks, vias
25, 0
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
5 Jul 2026
Updated
6 Jul 2026

Overview

PCB T1 is an open-source printed circuit board by Rando1f, from the Rando1f/hackpad-1 repository on GitHub, published under the MIT licence. It is a 2-layer board of 19.1 × 57.2 mm with 4 parts on 14 nets, routed with 25 tracks and 0 vias.

Its parts include 3 switches and 1 IC.

README

README.md

hackpad-P

a 3 key switch macropad made to make shortcuts and hotkeys easier to acess, the current firmware has a start/end recording button as well as one for changing languages CASE DESIGN FOR THE PCB

Case

made in: Autofusion360 The case has two main parts: the base and the plate. The base features a custom-made SCV extrusion. It is my Minecraft head design. The plate doesn't have anything special, other than the black color that I put on it, featuring three spaces for each key switch to be put in.

PCB

made in: KiCad The keypad features three switch buttons, all connected to the ground. Rather than using the normal columns and rows, I decided to use the grounding method, so they are considered direct pins, as the number of keys didn't require many pins to start with. It uses a module-seeeduino-xiao rp2040 as thigns desi microcontroller

firmware

made using: QMK the firmware was made through QMK using the function known as arcpins, as the pins themselves were made directly connected to the GND. enjoy :3

Parts

4
QtyValueFootprintReferences
3SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW1, SW2, SW3
1MOUDLE-SEEEDUINO-XIAOfootprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MMU1

Questions

How big is the PCB T1 PCB?

It measures 19.1 × 57.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the PCB T1 use?

4 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 PCB T1 KiCad files?

From the Rando1f/hackpad-1 repository on GitHub, at the commit this page was made from: the board is PCB/PCB_T1.kicad_pcb and its schematic PCB/PCB_T1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the PCB T1 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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