2 layers65 × 65 mm Esp butt, the printed circuit board in 3D

Esp butt

A physical controller for intimate devices. No phone. No app. Just knobs, sliders, and hundreds of compatible toys.

Size: 65 × 65 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 18
Nets: 33
Pads: 96
Tracks, vias: 90, 0
Pours: 2
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 7 Mar 2026
Updated: 29 Apr 2026

Overview

Esp butt is an open-source printed circuit board by jsmnbom, from the jsmnbom/esp-butt repository on GitHub. It is a 2-layer board of 65 × 65 mm with 18 parts on 33 nets, routed with 90 tracks and 0 vias.

It is built around the PTA4543-2015DPB103, PBH2UEESNPNAGX and PEC12R-4225F-S0024. Its parts include 10 resistors, 3 capacitors, 2 connectors, 2 switches and 1 IC. It belongs with the ESP32 boards of this library.

Main components

README

README.md

esp-butt

Bluetooth intimate hardware (sex toys, etc) controller powered by buttplug.io.

Status

This project is still in fairly early development, it has some quirks and rough edges but is generally functional. Feel free to contact me if you are interested in building your own or contributing to the project.

Documentation

🏠
Home

🛠️
Hardware

📋
BOM

📐
Schematic

🟩
PCB

🧊
3D Models

⚙️
Firmware

Contributing

I welcome contributions with open arms. If you have ideas, suggestions for improvements, or want to help out with development, please don't hesitate to reach out or submit a pull request.

License

This project uses multiple licenses depending on the component:

Component	License
`src/` — firmware source code	MIT
`docs/` — documentation	MIT
`cad/` — CAD files	MIT
`img/` — images	CC BY-SA 4.0
`pcb/` — PCB design	CC BY-SA 4.0
`pcb/kicad-config/10.0/colors/witchhazel.json`	Apache-2.0 — © Thea Flowers
`pcb/esp-butt/3D/` — 3D models	Mixed — see ATTRIBUTION.md

Thanks

Thanks to @qdot and the rest of the Buttplug.io contributors doing all the hard work of reverse engineering and protocol design, and also for being generally awesome.

Parts

Qty	Value	Footprint	References
5	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R2, R3, R4, R6
2	10nF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm	C1, C2
2	220k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R9, R10
2	PTA4543-2015DPB103	esp-butt:TRIM_PTA4543-2015DPB103	R7, R8
1	100nF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm	C3
1	1k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R5
1	1x04_P2.54mm	esp-butt:OLED_128x64_1.3in_I2C_Socket_Vertical	J1
1	JST_PH	Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J2
1	PBH2UEESNPNAGX	esp-butt:SW_PBH2UEESNPNAGX	S2
1	PEC12R-4225F-S0024	esp-butt:XDCR_PEC12R-4225F-S0024	S1
1	XIAO-ESP32-S3	esp-butt:XIAO-ESP32-S3-DIP+	U1

Questions

How big is the Esp butt PCB?

It measures 65 × 65 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Esp butt use?

18 parts, built around the PTA4543-2015DPB103, PBH2UEESNPNAGX and PEC12R-4225F-S0024. 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 Esp butt KiCad files?

From the jsmnbom/esp-butt repository on GitHub, at the commit this page was made from: the board is pcb/esp-butt/esp-butt.kicad_pcb and its schematic pcb/esp-butt/esp-butt.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Esp butt design in my own project?

Its repository states no licence, so its author keeps all rights: ask jsmnbom before reusing the design.

Category and platform

ESP32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/jsmnbom-esp-butt" title="Esp butt in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/jsmnbom-esp-butt.jpg" alt="Esp butt" width="1200" height="900">

A picture that opens the board, for a README

[![Esp butt](https://pcbkit.io/embed/boards/jsmnbom-esp-butt.jpg?size=s)](https://pcbkit.io/boards/jsmnbom-esp-butt)

Source

Repository: jsmnbom/esp-butt
Board file: pcb/esp-butt/esp-butt.kicad_pcb
Commit: 7fece31
Homepage: jsmnbom.github.io/esp-butt
Licence: Not stated

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