HardLabs

OpusPad

LightestDark·OpusPad·PCB/opus_pcb.kicad_pcb

OpusPad PCB layout, top view — open source RP2040/RP2350 board by LightestDark

About the OpusPad PCB

OpusPad is an open source RP2040/RP2350 PCB design by LightestDark, published on GitHub. It is a 2-layer board measuring 100 × 56 mm, with 24 components from 6 distinct parts.

Its main chip is the Seeed Studio XIAO RP2040, from the RP2040/RP2350 family. By type, the board carries 15 diodes, 7 switches, 1 IC and 1 connector.

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

From the project

Submission of my hackpad

Screenshot of how the case will fit together:

BOM: Seeed XIAO RP2040 Through-hole 1N4148 Diodes (6x) MX-Style switches (6x) EC11 Rotary encoders (1x) 0.91 inch OLED displays (1x) Blank DSA keycaps (White) (4x) SK6812 MINI-E LEDs (8x) M3x16mm screws (5x) M3x5mx4mm heatset inserts (5x)

Overview: I made this hackpad to add for my blender setup at home as a nice addition! Took inspiration from the orpheuspads 3d parts (etc took the model for the OLED)

OpusPad, from the project README
From the project README

Main components on the OpusPad

Seeed Studio XIAO RP2040

OpusPad bill of materials (BOM)

24 components, 6 distinct parts.

QtyPartRefs
1
Seeed Studio XIAO RP2040
U1
1
OLED_DISPLAY
J1
1
RotaryEncoder_Switch
SW1
6
SW_Push_45deg
SW2, SW3, SW4, SW5, SW6, SW7
7
1N4148
D1, D2, D3, D4, D9, D10, D11
8
SK6812MINI
D5, D6, D7, D8, D12, D13, D14, D15

OpusPad design files

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

OpusPad: common questions

What microcontroller does the OpusPad use?

The OpusPad is built around the Seeed Studio XIAO RP2040, from the RP2040/RP2350 family.

How big is the OpusPad PCB?

The OpusPad measures 100 × 56 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpusPad?

24 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the OpusPad design files?

From the LightestDark/OpusPad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OpusPad design in my own project?

The repository has no license, so all rights stay with LightestDark. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the OpusPad 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.

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