BuildPad

pranay-k4·BuildPad·pcb/Build Pad.kicad_pcb

About the BuildPad PCB

BuildPad is an open source RP2040/RP2350 PCB design by pranay-k4, published on GitHub under the MIT license. It is a 2-layer board measuring 95 × 73.5 mm, with 22 components from 5 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 14 diodes, 6 switches, 1 IC and 1 LED.

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

From the project

A customizable open-source macropad for makers, coders, designers, and electronics builders.

Flash the generated firmware onto the XIAO RP2040.

BuildPad, from the project README — From the project README

Main components on the BuildPad

XIAO-RP2040-DIP

BuildPad bill of materials (BOM)

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

Qty	Part	Footprint	Refs
1	XIAO-RP2040-DIP	XIAO-RP2040-DIP	U1
6	SW_Push	SW_Cherry_MX_1.00u_PCB	SW1, SW2, SW3, SW4, SW5, SW6
1	HS91L02W2C01 HS(汉昇)	OLED-TH_L38.0-W12.0_HS91L02W2C01	OLED1
8	SK6812MINI-E	LED_SK6812MINI-E_3.2x2.8mm_P1.5mm_ReverseMount	D1, D2, D3, D4, D5, D6, D7, D8
6	1N4148	D_SOD-123	D9, D10, D11, D12, D13, D14

BuildPad design files

The KiCad project lives in the pranay-k4/BuildPad repository on GitHub; these links point at the commit this page was built from.

BuildPad: common questions

What microcontroller does the BuildPad use?

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

How big is the BuildPad PCB?

The BuildPad measures 95 × 73.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BuildPad?

22 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 BuildPad design files?

From the pranay-k4/BuildPad 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 BuildPad design in my own project?

Yes, under the terms of its MIT license, which pranay-k4 chose for the repository.

Can I test firmware for the BuildPad 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.