HardLabs

Lingcordion

LingDong-·lingcordion·pcb/main.kicad_pcb

Lingcordion PCB layout, top view — open source ESP32 board by LingDong-

About the Lingcordion PCB

Lingcordion is an open source ESP32 PCB design by LingDong-, published on GitHub. It is a 2-layer board measuring 75.6 × 113 mm, with 55 components from 20 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the Regulator_Linear_ZLDO1117-3.3V-1A, AMP_MONO_LM4871M and MCP4901. By type, the board carries 31 switches, 7 capacitors, 5 resistors, 4 ICs, 3 connectors and 3 diodes.

It belongs with the audio and test & measurement designs in this gallery.

From the project

Pocket-sized digital musical instrument inspired by the piano and the accordion

A pocket-sized digital musical instrument inspired by the piano and the accordion.

This repo hosts the design files of the PCB, source code for the firmware, and CAD parts for 3D printing.

- 3 playable octaves on the right hand, bass/chord mode on the left hand. - On-board synthesizer / MIDI output (USB). - On-board speaker / 3.5mm audio jack. - Easy to learn, fits in your back pocket.

Lingcordion, from the project README
From the project README

Main components on the Lingcordion

Regulator_Linear_ZLDO1117-3.3V-1AESP32-S3-WROOM-1AMP_MONO_LM4871MMCP4901

Lingcordion bill of materials (BOM)

55 components, 20 distinct parts.

QtyPartRefs
1
Regulator_Linear_ZLDO1117-3.3V-1A
U1
1
ESP32-S3-WROOM-1
U2
1
AMP_MONO_LM4871M
U3
1
MCP4901
U4
1
Conn_PinHeader_1x02_P2.54mm_Vertical_THT_D1mm
J2
1
USB_B_Mini
J3
1
AudioJack2_Ground
J6
1
Battery_Cell
BT1
1
MountingHole
H1
1
BUTTON_PTS636
SW1
1
SWITCH_AYZ0102AGRLC
SW2
1
SW_Push_DPDT
SW3
28
SW_SPDT
SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11 +20
2
D_Schottky
D1, D2
1
LED
D3
4
C
C1, C2, C3, C7
1
C0.39uF
C4
2
C1uF
C5, C6
3
R
R1, R2, R10
2
R20K
R3, R4

Lingcordion design files

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

Lingcordion: common questions

What microcontroller does the Lingcordion use?

The Lingcordion is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Lingcordion PCB?

The Lingcordion measures 75.6 × 113 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Lingcordion?

55 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Lingcordion design files?

From the LingDong-/lingcordion repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Lingcordion design in my own project?

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

Can I test firmware for the Lingcordion without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

Similar boards