HardLabs

Numpad

Arwinplayz·Numpad·PCB/Numpad/Numpad.kicad_pcb

Numpad PCB layout, top view — open source RP2040/RP2350 board by Arwinplayz

About the Numpad PCB

Numpad is an open source RP2040/RP2350 PCB design by Arwinplayz, published on GitHub. It is a 2-layer board measuring 90 × 120 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 18 switches, 18 diodes, 1 IC and 1 LED.

From the project

First hackpad made with kicad and Fusion 360

Numpad, from the project README
From the project README

Main components on the Numpad

XIAO-RP2040-DIP

Numpad bill of materials (BOM)

38 components, 5 distinct parts.

QtyPartRefs
1
XIAO-RP2040-DIP
U1
16
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +8
2
RotaryEncoder_Switch
SW17, SW18
1
SSD1306 0.91" OLED
OLED1
18
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +10

Numpad design files

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

Numpad: common questions

What microcontroller does the Numpad use?

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

How big is the Numpad PCB?

The Numpad measures 90 × 120 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Numpad?

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

Where can I download the Numpad design files?

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

Can I use the Numpad design in my own project?

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

Can I test firmware for the Numpad 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.

Similar boards