Tronzpad

LtBrain·tronzpad·PCB/tronzpad.kicad_pcb

About the Tronzpad PCB

Tronzpad is an open source RP2040/RP2350 PCB design by LtBrain, published on GitHub under the MIT license. It is a 2-layer board measuring 99.8 × 73 mm, with 41 components from 5 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 27 diodes, 13 switches and 1 IC.

It belongs with the keyboards designs in this gallery.

From the project

Macropad design for Hackclub Hackpad YSWS, made with QMK and VIAL + KiCAD

All of the circuitry and PCB design was done with KiCAD 8.0 on Windows 11

Credits to Joe Scotto for the footprints.

QMK and VIAL are meant to be used on Tronzpad for firmware. - [x] Customizable keymap and layout - [x] 12 keys for macros - [x] Compilable with QMK MSYS on Win11 and Linux (MacOS not tested) - [x] Real-time/On the fly configuration - [x] Layer Switching ### How to Compile the Firmware

Tronzpad, from the project README — From the project README

Main components on the Tronzpad

XIAO-RP2040-DIP

Tronzpad bill of materials (BOM)

41 components, 5 distinct parts.

Qty	Part	Footprint	Refs
1	XIAO-RP2040-DIP	XIAO-RP2040-DIP	U1
12	Keyswitch	SW_Cherry_MX_1.00u_PCB	S1, S2, S3, S4, S5, S6, S7, S8 +4
1	RotaryEncoder_Switch_MP	RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm	SW1
12	Diode	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +4
15	LED_SK6812MINI	LED_SK6812MINI	D13, D14, D15, D16, D17, D18, D19, D20 +7

Tronzpad design files

The KiCad project lives in the LtBrain/tronzpad repository on GitHub; these links point at the commit this page was built from.

LayoutPCB/tronzpad.kicad_pcb
SchematicPCB/tronzpad.kicad_sch

Tronzpad: common questions

What microcontroller does the Tronzpad use?

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

How big is the Tronzpad PCB?

The Tronzpad measures 99.8 × 73 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tronzpad?

41 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tronzpad design files?

From the LtBrain/tronzpad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tronzpad design in my own project?

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

Can I test firmware for the Tronzpad 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.