HardLabs

EasyPiano

AronTheB·EasyPiano·PCB/EasyPiano.kicad_pcb

EasyPiano PCB layout, top view — open source RP2040/RP2350 board by AronTheB

About the EasyPiano PCB

EasyPiano is an open source RP2040/RP2350 PCB design by AronTheB, published on GitHub. It is a 2-layer board measuring 153 × 79 mm, with 35 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, 2 ICs and 1 buzzer.

It belongs with the keyboards designs in this gallery.

From the project

I've been learning the piano for 8 years and I always wanted a MIDI keyboard, but they were out of my budget so I never bought one. So I decided to make one myself that I can use in beat making apps like FL Studio. While this keyboard is small and doesn't have real "piano" keys,

I've been learning the piano for 8 years and I always wanted a MIDI keyboard, but they were out of my budget so I never bought one. So I decided to make one myself that I can use in beat making apps like FL Studio. While this keyboard is small and doesn't have real "piano" keys, it's super easy to use and build for anyone.

To build it download the Gerber (PCB) and 3D files and print them. You also need a Xiao RP2040, SSD1306 screen, 16 switches and 16 keycaps. Links for these can be found in the BOM. Put all the switches in the PCB and the XIAO RP2040 and solder them in. Put the PCB in the…

EasyPiano, from the project README
From the project README

Main components on the EasyPiano

XIAO-RP2040-DIP

EasyPiano bill of materials (BOM)

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

QtyPartRefs
1
XIAO-RP2040-DIP
U1
1
~
U2
1
Buzzer
BZ1
16
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +8
16
1N4148WT
D1, D2, D3, D4, D5, D6, D7, D8 +8

EasyPiano design files

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

EasyPiano: common questions

What microcontroller does the EasyPiano use?

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

How big is the EasyPiano PCB?

The EasyPiano measures 153 × 79 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the EasyPiano?

35 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 EasyPiano design files?

From the AronTheB/EasyPiano 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 EasyPiano design in my own project?

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

Can I test firmware for the EasyPiano 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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