2 layers

Base

made with atopile

Copper layers: 2
Thickness: 1.6 mm
Parts: 38
Nets: 63
Pads: 208
Tracks, vias: 248, 10
Pours: 1
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 29 Oct 2024
Updated: 12 Apr 2025

Overview

Base 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 38 parts on 63 nets, routed with 248 tracks and 10 vias.

Its parts include 14 capacitors, 12 resistors, 9 ICs, 2 inductors and 1 diode.

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
10	25V 10uF X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS	lib:C0805	C2, C3, C4, C5, C6, C7, C9, C10, C11, C12
4	16V 100nF X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS	lib:C0402	C1, C8, C13, C14
2	100mW Thick Film Resistors 75V ±100ppm/℃ ±1% 2.7kΩ 0603 Chip Resistor - Surface Mount ROHS	lib:R0603	R11, R12
2	62.5mW Thick Film Resistors 50V ±100ppm/℃ ±1% 1MΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R6, R9
2	62.5mW Thick Film Resistors 50V ±100ppm/℃ ±1% 4.7kΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R2, R3
2	?	lib:IND-SMD_L2.5-W2.0_WPN252012H	L1, L2
2	?	lib:VSON-14_L4.0-W3.0-P0.50-BL-EP_TI_DSJ	U5, U6
1	62.5mW 50V ±100ppm/℃ ±1% 25.5kΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R4
1	62.5mW Thick Film Resistors 50V ±1% ±200ppm/℃ 2.8kΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R5
1	62.5mW Thick Film Resistors 50V ±100ppm/℃ ±1% 10kΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R1
1	62.5mW Thick Film Resistors 50V ±100ppm/℃ ±1% 23.7kΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R7
1	62.5mW Thick Film Resistors 50V ±100ppm/℃ ±1% 330Ω 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R10
1	62.5mW Thick Film Resistors 50V ±100ppm/℃ ±1% 4.3kΩ 0402 Chip Resistor - Surface Mount ROHS	lib:R0402	R8
1	?	lib:WIRELM-SMD_ESP32-S3-WROOM-1	U1
1	?	lib:KEY-SMD_4P-L4.2-W3.2-P2.20-LS4.6	U2
1	?	lib:HDR-SMD_10P-P1.27-V-M-R2-C5-LS5.3	U3
1	?	lib:USB-C-SMD_KH-TYPE-C-16P	U4
1	?	lib:LED0603-RD	LED1
1	?	lib:TF-SMD_TF-01A	U7
1	?	lib:LED-SMD_4P-L2.0-W2.0-BR	U8
1	?	lib:HDR-TH_4P-P2.54-V-F	U9

Questions

What parts does the Base use?

38 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 Base 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/layout/base/base.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Base 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-base" title="Base 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-base.jpg" alt="Base" width="1200" height="900">

A picture that opens the board, for a README

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

Source

Repository: eigenlucy/ESPHome-Panel
Board file: elec/src/esp32-s3/elec/layout/base/base.kicad_pcb
Commit: 36110ab
Licence: MIT

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