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Sean Johnston

UNITED STATES OF AMERICA ? + Follow Edit Project

Engineer

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Raphael Maes

BELGIUM
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Greg Brendel

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Sean Johnston

UNITED STATES OF AMERICA
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4

Screenshot 2025-07-12 at 17.33.55.png

Tools, APP Software Used etc.

KiCAD

Description

KB1v8.1.kicad_pcb

A pocket size midi keyboard controller with mini speakers for the Polyend Tracker Mini.

Use PCBWAY to assemble all the SMT components.

See THT BOM for all through hole parts.

See GitHub project for PCB assembly instructions as well as the CAD files.

https://github.com/PocketMidi/KB1
https://github.com/PocketMidi/KB1/tree/main/hardware

See website for the fully built device and firmware/software versions -https://pocketmidi.com/

Latest updates and project info is usually posted here - https://backstage.polyend.com/t/mini-midi-keyboard/4206/359

Code

Pocket Midi KB1

https://github.com/PocketMidi/KB1

Schematic and Layout

Schematic

KB1v8.1.pdf

CAD-Custom parts and enclosures

STEP file

KB1 v10.9.stp

Download Gerbers Download BOM(Bill of materials)

Jul 13,2025

1,041 views

KB1v8.1.kicad_pcb

2 Layers PCB 84 x 126 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

A pocket size midi keyboard controller with mini speakers for the Polyend Tracker Mini

1041

4

0

Published: Jul 13,2025

Standard PCB

Download Gerber file 10

BOM(Bill of materials)

Centroid file

Other files for Assembly

Purchase

Donation Received ($)

Wpsload Donate 10% cost To Author

File Last Updated: 2026/04/09 (GMT+8)

File update record

2026-04-0921:32:31

Other files for Assembly are updated.

2026-04-0921:14:51

Other files for Assembly are updated.

2025-08-0611:10:08

Parts List (BOM) is updated.

2025-08-0611:01:12

Parts List (BOM) is updated.

Only PCB

PCB+Assembly

*Wpsload community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.

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Copyright Info

Attribution-ShareAlike (CC BY-SA) License

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Under the Attribution-ShareAlike (CC BY-SA) License.

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Topic

ESP32

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Engineer Jan 23,2026
Raphael Maes Jan 04,2026
Greg Brendel Dec 02,2025
Sean Johnston Jul 13,2025

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