2 layers181 × 97 mm
OpenDeck r3.1.2
shanteacontrols/OpenDeck
A platform for building interactive control and sensing devices using MIDI and OSC built with Zephyr RTOS.
262 parts960Apache-2.0
2 layers153 × 79 mm
EasyPiano
AronTheB/EasyPianoI'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.
- Size
- 153 × 79 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 30
- Pads
- 150
- Tracks, vias
- 232, 8
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Apr 2026
- Updated
- 23 May 2026
Overview
EasyPiano is an open-source printed circuit board by AronTheB, from the AronTheB/EasyPiano repository on GitHub. It is a 2-layer board of 153 × 79 mm with 35 parts on 30 nets, routed with 232 tracks and 8 vias.
It is built around the 1N4148WT. Its parts include 16 diodes, 16 switches and 2 ICs. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdEasyPiano
EasyPiano is a 1 octave MIDI keyboard, with USB MIDI support to make music in any software that supports MIDI input.
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 3D case and close it with screws. Then place all of the keycaps on the switches. To use the firmware download CircuitPython on the microcontroller (https://circuitpython.org/board/seeeduino_xiao_rp2040/) and put the code.py on the RP2040 and it should start working.
To use the piano turn it on with the top left key and it will start working. To switch between octaves use the 2 keys next to the power button to turn it up or down.
KICAD
SCHEMATIC
PCB
Fusion (Case)
BOM
| NAME | LINK | PRICE | QUANTITY | Need To buy? |
|---|---|---|---|---|
| Xiao RP2040 | https://www.seeedstudio.com/XIAO-RP2040-v1-0-p-5026.html | $3,90 | 1 | Yes |
| SSD1306 Oled | https://www.aliexpress.com/item/1005006141235306.html | $2,55 | 1 | No |
| Keycaps | https://www.aliexpress.com/item/1005009031620916.html | $4,89 | 16 | Yes |
| Mx Cherry Switches | https://www.aliexpress.com/item/1005004285423123.html | $5,96 | 16 | Yes |
| Passive Buzzer | https://www.aliexpress.com/item/1005006260328559.html | $1,32 | 1 | Yes |
| Pcb (JLCPCB) | https://jlcpcb.com/ | $13,65 | 1 | Yes |
| 3D case | https://printlegion.hackclub.com/ | Free + Shipping | 1 | Yes |
| Diodes | https://www.aliexpress.com/item/1005010653199974.html | $2,00 | 16 | Yes |
| TOTAL: | $34,27 |
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 1N4148WT | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 16 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16 |
| 1 | Buzzer | Buzzer_Beeper:MagneticBuzzer_PUI_AT-0927-TT-6-R | BZ1 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
| 1 | ~ | OLED2:128x64OLED | U2 |
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Questions
How big is the EasyPiano PCB?
It measures 153 × 79 mm and has 2 copper layers, 1.6 mm thick.
What parts does the EasyPiano use?
35 parts, built around the 1N4148WT. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the EasyPiano KiCad files?
From the AronTheB/EasyPiano repository on GitHub, at the commit this page was made from: the board is PCB/EasyPiano.kicad_pcb and its schematic PCB/EasyPiano.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EasyPiano design in my own project?
Its repository states no licence, so its author keeps all rights: ask AronTheB before reusing the design.