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Pegoku·Smart-desk-lamp·PCB/PCB.kicad_pcb

PCB layout, top view — open source ESP32 board by Pegoku

About the PCB

PCB is an open source ESP32 PCB design by Pegoku, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 70 × 104.5 mm, with 46 components from 22 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the IQS7222A001QNR, IRM-20-24 and AP63203WU. By type, the board carries 19 resistors, 14 capacitors, 5 connectors, 4 ICs, 2 switches and 1 inductor.

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

From the project

Smart esp32-powered desk lamp

This is a home assistant controlled CWWW desk lamp with capacitive touch buttons, made with ESPHome and ESP32-C3.

I made this project as I wanted to learn more about capacitive touch sensors and how to use them with ESPHome. I also wanted to make a simple desk lamp that could be controlled with Home Assistant.

- Capacitive touch buttons to control the brightness and color temperature of the LEDs. - Home Assistant integration.

PCB, from the project README
From the project README

Main components on the PCB

IQS7222A001QNRIRM-20-24AP63203WUESP32-C3-WROOM-02

PCB bill of materials (BOM)

46 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
IQS7222A001QNR
U1
1
IRM-20-24
U2
1
AP63203WU
U6
1
ESP32-C3-WROOM-02
U7
1
CONN_01X04_PIN
Conn_01x04_Pin
J1
1
CONN_01X01
Conn_01x01
J2
1
CONN_01X08
Conn_01x08
J3
1
703W-00_53
J4
1
CONN_01X04
Conn_01x04
J6
1
R_Potentiometer
RV1
2
PTS815SJM250SMTRLFS
SW1, SW2
1
3.9UH
3.9uH
L1
2
100NF
100nF
C1, C10
3
100PF
100pF
C2, C5, C7
2
2.2UF
2.2uF
C3, C6
1
4.7UF
4.7uF
C4
2
0.1UF
0.1uF
C8, C9
4
22UF
22uF
C11, C12, C13, C14
8
470
R1, R2, R3, R4, R5, R6, R7, R8
5
4.7K
4.7k
R10, R11, R12, R16, R17
Show 2 more
QtyPartRefs
4
1k
R18, R19, R20, R21
2
10K
10k
R22, R23

PCB design files

The KiCad project lives in the Pegoku/Smart-desk-lamp repository on GitHub; these links point at the commit this page was built from.

PCB: common questions

What microcontroller does the PCB use?

The PCB is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the PCB?

The PCB measures 70 × 104.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PCB?

46 components, from 22 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the PCB design files?

From the Pegoku/Smart-desk-lamp repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the PCB design in my own project?

Yes, under the terms of its GPL-3.0 license, which Pegoku chose for the repository.

Can I test firmware for the PCB 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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