HardLabs

Keyboard macropad

kermitsgonnakermicide·Lattice·PCB/keyboard_macropad/keyboard_macropad.kicad_pcb

Keyboard macropad PCB layout, top view — open source RP2040/RP2350 board by kermitsgonnakermicide
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About the Keyboard macropad PCB

Keyboard macropad is an open source RP2040/RP2350 PCB design by kermitsgonnakermicide, published on GitHub. It is a 2-layer board measuring 88 × 131 mm, with 38 components from 5 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 16 switches, 16 diodes, 4 connectors, 1 IC and 1 LED.

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

From the project

a modular keyboard(w/ i2c!)

Lattice also comes with three modules(as of now), which are: - a 16 key macropad with an OLED - a 3 slider, two encoder module i'm calling the sliderpad - a 32x4 RGB LED(specifically the WS2812B-2020) matrix that slides in the empty top bit of the keyboard(connected by 2.54 mm pins because I didnt trust the current limits of the magnetic connectors)

Each module features a xiao rp2040 to run everything else on it because its so smol and cute :3

Keyboard macropad, from the project README
From the project README

Main components on the Keyboard macropad

XIAO-RP2040-DIP

Keyboard macropad bill of materials (BOM)

38 components, 5 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-RP2040-DIP
U1
4
CONN_01X04_PIN
Conn_01x04_Pin
J1, J2, J3, J4
16
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +8
1
OLED_128X64_1.3_I2C
DS1
16
1N4448
D1, D2, D3, D4, D5, D6, D7, D8 +8

Keyboard macropad design files

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

Keyboard macropad: common questions

What microcontroller does the Keyboard macropad use?

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

How big is the Keyboard macropad PCB?

The Keyboard macropad measures 88 × 131 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyboard macropad?

38 components, from 5 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 Keyboard macropad design files?

From the kermitsgonnakermicide/Lattice 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 Keyboard macropad design in my own project?

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

Can I test firmware for the Keyboard macropad 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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