2 layers

Usbc

made with atopile

Copper layers: 2
Thickness: 1.6 mm
Parts: 3
Nets: 8
Pads: 26
Tracks, vias: 4, 0
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 29 Oct 2024
Updated: 12 Apr 2025

Overview

Usbc is an open-source printed circuit board by eigenlucy, from the eigenlucy/ESPHome-Panel repository on GitHub, published under the MIT licence. It is a 2-layer board with 3 parts on 8 nets, routed with 4 tracks and 0 vias.

Its parts include 2 resistors and 1 IC.

README

README.md

izzymonitor

esp32-s3 based home assistant control panel

Rust firmware development repo (thanks izzy!)

Downloading Gerbers/PCBA files for assembly service

PCBA files are generated in the build artifacts on each commit. Download the build artifacts from the latest commit under the Actions tab. Upload the default gerber zip to JLCPCB, and use default.csv for the BOM file + default.pos.csv for the CPL file

Requirements

atopile

rust, espup, espflash

Ato builds

Ato builds listed in ato.yaml

Veramonitor.ato is the main build. The final PCB is build from this, and the corresponding kicad project is in elec/layouts/default/veramonitor.kicad_pro

kailh-sw.ato contains the keyswitch+neopixel module. kicad files are located in elec/layouts/kailh-sw

MAX98357AETE_plus_T.ato contains the ClassDAmp module

TESTING IN PROGRESS:

Wavshare 1.8in LCD Module with ST7735 Controller

module TFTDisplay in elec/src _1_peroid_8INCH_space_MODULE.ato LCSC_ID = C359940

SPI Pin mapping (elec/src/veramonitor.ato, line 67):

text

    lcd.spi.mosi ~ micro.io13; lcd.spi.sck ~ micro.io12; lcd.spi.cs ~ micro.io11; lcd.spi.dc ~ micro.io10; lcd.spi.reset ~ micro.io9; lcd.spi.backlightEN ~ micro.io46

MAX98357 Amp + Speaker

Uses MAX98357 (LCSC ID = C910544) 3W Class D amplifier IC + KLJ-1304T Speaker (LCSC_ID = C18186315). ESP32-S3 sends digital audio data to MAX98357 via I2S.

I2S Pin Mapping (veramonitor.ato, line 73):

text

    amp.LRCLK ~ micro.io8; amp.BCLK ~ micro.io18; amp.DIN ~ micro.io17

Test SK6805 neopixels

WS2812B style protocol. Defined in elec/src/sk6805-ec20/elec/src/sk6805-ec20.ato

Neopixels invoked and configured in each KailhSW module

Neopixel Pin Maping (veramonitor.ato, line 70):

text

    micro.io16 ~ sw1.DIN; sw1.DOUT ~ sw2.DIN; sw2.DOUT ~ sw3.DIN; sw3.DOUT ~ sw4.DIN; sw4.DOUT ~ sw5.DIN; sw5.DOUT ~ sw6.DIN

CPG1511F01S05 Kailh Switches

Accomodates standard keycaps LCSC_ID: C400225 Kail module configured in elec/src/kailh-sw.ato.

Active low. Pin mappings:

text

    micro.io14 ~ sw1.KEY; micro.io21 ~ sw2.KEY; micro.io47 ~ sw3.KEY; micro.io48 ~ sw4.KEY; micro.io45 ~ sw5.KEY; micro.io35 ~ sw6.KEY

SW1 ~ GPIO14; SW2 ~ GPIO21; SW3 ~ GPIO47; SW4 ~ GPIO48; GPIO45 ~ SW5; SW6 ~ GPIO35

SPH0641LU4h1 MEMS microphone

LCSC_ID = C2879853

PDM Pin Mappings:

text

    pdm.pdm_sel ~ mic.SELECT; pdm.pdm_sel ~ micro.io3
    pdm.pdm_clk ~ mic.CLOCK; pdm.pdm_clk ~ micro.io5
    pdm.pdm_data ~ mic.DATA; pdm.pdm_data ~ micro.io4

To Do

1: Verify basic functionality

2: Finish rust firmware

3: Home assistant integration

4: 3D printed enclosure/wall panel mount

Parts

Qty	Value	Footprint	References
2	Chip Resistor - Surface Mount 4.7KOhms ±5% 1/16W 0402 RoHS	lib:R0402	R1, R2
1		lib:USB-C-SMD_KH-TYPE-C-16P	U1

Questions

What parts does the Usbc use?

3 parts. 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 Usbc KiCad files?

From the eigenlucy/ESPHome-Panel repository on GitHub, at the commit this page was made from: the board is elec/src/esp32-s3/elec/src/usb-connectors/elec/layout/default/usbc.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Usbc design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/eigenlucy-esphome-panel-usbc" title="Usbc 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/eigenlucy-esphome-panel-usbc.jpg" alt="Usbc" width="1200" height="900">

A picture that opens the board, for a README

[![Usbc](https://pcbkit.io/embed/boards/eigenlucy-esphome-panel-usbc.jpg?size=s)](https://pcbkit.io/boards/eigenlucy-esphome-panel-usbc)

Source

Repository: eigenlucy/ESPHome-Panel
Board file: elec/src/esp32-s3/elec/src/usb-connectors/elec/layout/default/usbc.kicad_pcb
Commit: 36110ab
Licence: MIT
Copies: 4 copies in 13 repositories

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