HardLabs

Roomnode s3

AskAlice·room-node-pcbs·boards/roomnode-s3/roomnode-s3.kicad_pcb

Roomnode s3 PCB layout, top view — open source ESP32 board by AskAlice

About the Roomnode s3 PCB

Roomnode s3 is an open source ESP32 PCB design by AskAlice, published on GitHub. It is a 2-layer board measuring 65 × 50 mm, with 31 components from 31 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N8R2, from the ESP32 family. Other key parts include the ME6211C33M5G, SHT40, SGP40 and BH1750FVI. By type, the board carries 8 capacitors, 7 resistors, 5 ICs, 5 diodes, 4 connectors and 2 switches.

It belongs with the iot & wireless and sensors designs in this gallery.

From the project

Multifunction ESP32 (S3/C6/C3) home IoT room sensor nodes — KiCad 8 hardware, ESPHome firmware, JLCPCB-ready. One per room: presence (mmWave/PIR), BLE tracking, temp/RH, VOC, CO2, PM, lux, addressable LEDs.

Flagship room node: ESP32-S3-WROOM-1-N8R2 (WiFi + BLE 5), SHT40, SGP40 VOC, BH1750 lux, HLK-LD2450 mmWave presence, PIR header, 4x SK6812MINI-E LEDs. USB-C power (AMS1117-3.3).

Docs: https://askalice.github.io/room-node-pcbs/boards/roomnode-s3/

Writes roomnode-s3.kicadpcb / .kicadsch / .kicadpro plus PIL renders into ../../renders/`.

JLCPCB-ready package: ../../fab/roomnode-s3jlcpcb.zip (gerbers, drill, pick&place CSV, BOM CSV), rebuilt by CI from fab/roomnode-s3/`.

Main components on the Roomnode s3

ESP32-S3-WROOM-1-N8R2ME6211C33M5GSHT40SGP40BH1750FVI

Roomnode s3 bill of materials (BOM)

31 components, 31 distinct parts.

QtyPartRefs
1
ESP32-S3-WROOM-1-N8R2
U1
1
ME6211C33M5G
U2
1
SHT40
U3
1
SGP40
U4
1
BH1750FVI
U5
1
TYPE-C-31-M-12
J1
1
LD2450
J2
1
AM312-PIR
J3
1
UART
J4
1
TACT-3x4
SW1
1
TACT-3x4
SW2
1
USBLC6-2SC6
D1
1
SK6812MINI-E
D2
1
SK6812MINI-E
D3
1
SK6812MINI-E
D4
1
SK6812MINI-E
D5
1
10uF
C1
1
10uF
C2
1
100nF
C3
1
100nF
C4
Show 11 more
QtyPartRefs
1
100nF
C6
1
100nF
C7
1
100nF
C8
1
100nF
C9
1
5.1k
R1
1
5.1k
R2
1
470R
R3
1
10k
R4
1
10k
R5
1
4.7k
R6
1
4.7k
R7

Roomnode s3 design files

The KiCad project lives in the AskAlice/room-node-pcbs repository on GitHub; these links point at the commit this page was built from.

Roomnode s3: common questions

What microcontroller does the Roomnode s3 use?

The Roomnode s3 is built around the ESP32-S3-WROOM-1-N8R2, from the ESP32 family.

How big is the Roomnode s3 PCB?

The Roomnode s3 measures 65 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Roomnode s3?

31 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Roomnode s3 design files?

From the AskAlice/room-node-pcbs repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Roomnode s3 design in my own project?

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

Can I test firmware for the Roomnode s3 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.

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