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Room133

chl33·Room133·KiCAD/Room133.kicad_pcb

Room133 PCB layout, top view — open source ESP32 board by chl33

About the Room133 PCB

Room133 is an open source ESP32 PCB design by chl33, published on GitHub under the MIT license. It is a 4-layer board measuring 47.6 × 39.4 mm, with 36 components from 22 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the AMS1117-3.3 and SHTC3. By type, the board carries 3 ICs, 3 diodes, 2 connectors, 2 LEDs and 1 fuse.

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

From the project

An ESP32-based device for room monitoring, for use with Home Assistant

Room133 is an ESP32-based family of devices which helps with various room-monitoring tasks, particulary for use with Home Assistant.

It is based on the og3 C++ software framework.

This repository includes software for the device, KiCAD files for the circuit board, and OpenSCAD files for creating the project boxes for the different devices.

Please see the write-up on the project in my blog. I also wrote about the EBox design included in this repository.

Room133, from the project README
From the project README

Main components on the Room133

ESP32-WROOM-32AMS1117-3.3SHTC3

Room133 bill of materials (BOM)

36 components, 22 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32
U1
1
AMS1117-3.3
U2
1
SHTC3
U3
1
Edge2x6_Connector
J1
1
USB_B_Micro
J2
4
100nF
Ca1, Ca2, Ca4, Cl1
2
10uF
Cb2, Cb3
1
47uF
Cc1
1
SS14
DUSB1
1
0.5A
F1
1
Conn_01x04_Socket
JOLED1
1
Conn_01x04_Pin
JPIR1
1
Conn_01x03_Pin
JPIR2
1
Conn_01x05_Socket
JRADR1
1
Conn_01x02
J_LEAK1
5
1k
RL1, RL2, RL4, RL5, RL6
1
4.7M
RLK1
4
2.2k
Rf1, Rf2, Rf3, Rf4
1
470
Rt1
1
10k
Ru1
Show 2 more
QtyPartRefs
2
LED
DM1, DM2
3
LED
D4, D5, D6

Room133 design files

The KiCad project lives in the chl33/Room133 repository on GitHub; these links point at the commit this page was built from.

Room133: common questions

What microcontroller does the Room133 use?

The Room133 is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Room133 PCB?

The Room133 measures 47.6 × 39.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Room133?

36 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Room133 design files?

From the chl33/Room133 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Room133 design in my own project?

Yes, under the terms of its MIT license, which chl33 chose for the repository.

Can I test firmware for the Room133 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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