TriX-Pad

Adnanosman9·TriX-Pad·PCB/Macropad.kicad_pcb

About the TriX-Pad PCB

TriX-Pad is an open source RP2040/RP2350 PCB design by Adnanosman9, published on GitHub under the MIT license. It is a 2-layer board measuring 65 × 83 mm, with 20 components from 4 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 9 switches, 9 diodes, 1 IC and 1 LED.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

Fully custom mechanical Hackpad. has 3x3 9 keys

Brain: Powered by the compact and capable Seeed Studio XIAO RP2040. Firmware: Runs on KMK Firmware (CircuitPython) for incredibly easy keymap customization without needing to recompile. Display: Integrated 0.91" SSD1306 OLED (128×64) for real-time layer feedback, stats, or custom graphics. Matrix: A clean 3×3 Key Matrix layout complete with diode orientation for robust anti-ghosting.

TriX-Pad, from the project README — From the project README

Main components on the TriX-Pad

XIAO-RP2040-DIP

TriX-Pad bill of materials (BOM)

20 components, 4 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	XIAO-RP2040-DIP	Seeed_XIAO_RP2040	U1
9	SW_Push	SW_Cherry_MX_1.00u_PCB	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +1
1	SSD1306	OLED_128x32	Brd1
9	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +1

TriX-Pad design files

The KiCad project lives in the Adnanosman9/TriX-Pad repository on GitHub; these links point at the commit this page was built from.

TriX-Pad: common questions

What microcontroller does the TriX-Pad use?

The TriX-Pad is built around the XIAO-RP2040-DIP, from the RP2040/RP2350 family.

How big is the TriX-Pad PCB?

The TriX-Pad measures 65 × 83 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TriX-Pad?

20 components, from 4 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the TriX-Pad design files?

From the Adnanosman9/TriX-Pad repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the TriX-Pad design in my own project?

Yes, under the terms of its MIT license, which Adnanosman9 chose for the repository.

Can I test firmware for the TriX-Pad without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.