HardLabs

Opentouch s3

JoeMighty·opentouch-s3·hardware/kicad/OpenTouch_S3.kicad_pcb

Opentouch s3 PCB layout, top view — open source ESP32 board by JoeMighty

About the Opentouch s3 PCB

Opentouch s3 is an open source ESP32 PCB design by JoeMighty, published on GitHub under the Custom license license. It is a 4-layer board measuring 100 × 90 mm, with 145 components from 57 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the USBLC6-2SC6, BQ24074RGTR, MAX17048G+T10, TPS63001DRCR and MPR121QR2. By type, the board carries 54 resistors, 44 capacitors, 13 ICs, 12 connectors, 12 diodes and 3 transistors.

It belongs with the audio, iot & wireless and power & battery designs in this gallery.

From the project

A modern remake of the Bare Conductive Touch Board: 12 capacitive touch electrodes, MP3/WAV/MIDI audio, and now WiFi, Bluetooth LE, USB-C, a proper LiPo power path, a fuel gauge, line-in, MIDI out, Qwiic and an RGB LED.

A modern remake of the Bare Conductive Touch Board: 12 capacitive touch electrodes, MP3/WAV/MIDI audio, and now WiFi, Bluetooth LE, USB-C, a proper LiPo power path, a fuel gauge, line-in, MIDI out, Qwiic and an RGB LED.

Based on the Bare Conductive Touch Board open hardware files (CC BY-SA 3.0, https://github.com/BareConductive/touchboardcad_files). This is an independent adaptation, not affiliated with or endorsed by Bare Conductive, and released under the same licence (CC BY-SA 3.0).

Opentouch s3, from the project README
From the project README

Main components on the Opentouch s3

USBLC6-2SC6BQ24074RGTRMAX17048G+T10TPS63001DRCRESP32-S3-WROOM-1-N16R8MPR121QR2SRV05-4-P-T7VS1053B-LXC6206P182MRSN74LV1T125DBVR

Opentouch s3 bill of materials (BOM)

145 components, 57 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
USBLC6-2SC6
U1
1
BQ24074RGTR
U2
1
MAX17048G+T10
U3
1
TPS63001DRCR
U4
1
ESP32-S3-WROOM-1-N16R8
U5
1
MPR121QR2
U6
3
SRV05-4-P-T7
SRV05-4
U7, U8, U9
1
VS1053B-L
U10
1
XC6206P182MR
U11
2
SN74LV1T125DBVR
U12, U13
2
AO3401A
Q1, Q2
1
2N7002
Q3
1
NX3225GA-12.288MHZ-STD-CRG-2
12.288MHz
Y1
1
TYPE-C-31-M-12
USB-C
J1
1
S2B-PH-SM4-TB(LF)(SN)
LiPo JST-PH
J3
3
KF350-3.5-3P
J4, J5, J6
2
KF350-3.5-2P
J7, J8
1
SJ-3523-SMT-TR
HEADPHONE
J10
1
SJ-3523-SMT-TR
LINE IN
J11
1
DM3AT-SF-PEJM5
microSD
J12
Show 37 more
QtyPartRefs
1
SM04B-SRSS-TB(LF)(SN)
Qwiic
J17
1
SJ-3523-SMT-TR
MIDI OUT
J18
1
SMD1206P110TF/16
1.1A
F1
1
PCM12SMTR
POWER
SW1
1
TS-1187A-B-A-B
RESET
SW2
1
TS-1187A-B-A-B
BOOT
SW3
2
SS54
D1, D2
1
19-213/Y2C-CQ2R2L/3T(CY)
YELLOW
D3
1
19-217/GHC-YR1S2/3T
GREEN
D4
1
KT-0603R
RED
D5
6
ESD9B5.0ST5G
D6, D7, D8, D9, D10, D11
1
WS2812B-2020
D12
1
GZ2012D601TF
600R@100MHz
FB1
1
FNR4020S1R5MT
1.5uH
L1
1
0603B472K500NT
4.7nF
C1
1
CL21A475KAQNNNE
4.7uF
C2
19
CC0603KRX7R9BB104
100nF
C3, C5, C7, C11, C12, C14, C16, C17 +11
2
CL21A226MAQNNNE
22uF
C4, C13
7
CL21A106KAYNNNE
10uF
C6, C8, C9, C10, C27, C28, C40
7
CL10A105KB8NNNC
1uF
C15, C20, C21, C31, C38, C39, C44
2
CL10C100JB8NNNC
10pF
C18, C19
2
CL31A107MQHNNNE
100uF
C33, C34
3
0603B103K500NT
10nF
C35, C36, C37
2
0603WAF5101T5E
5.1k
R1, R2
2
0603WAF1004T5E
1M
R3, R35
1
0603WAF1501T5E
1.5k
R4
2
0603WAF3601T5E
3.6k
R5, R6
11
0603WAF1002T5E
10k
R7, R9, R10, R11, R15, R16, R19, R30 +3
3
0603WAF1001T5E
1k
R8, R14, R17
3
0603WAF1000T5E
100
R12, R43, R44
18
0603WAF1003T5E
100k
R13, R22, R23, R24, R25, R26, R27, R28 +10
1
0603WAF7502T5E
75k
R18
2
0603WAF4701T5E
4.7k
R20, R21
3
0603WAF200JT5E
20
R36, R37, R38
3
0603WAF4702T5E
47k
R45, R46, R47
1
0603WAF100JT5E
10
R50
2
0603WAF330JT5E
33
R51, R54

Opentouch s3 design files

The KiCad project lives in the JoeMighty/opentouch-s3 repository on GitHub; these links point at the commit this page was built from.

Opentouch s3: common questions

What microcontroller does the Opentouch s3 use?

The Opentouch s3 is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.

How big is the Opentouch s3 PCB?

The Opentouch s3 measures 100 × 90 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Opentouch s3?

145 components, from 57 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 Opentouch s3 design files?

From the JoeMighty/opentouch-s3 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 Opentouch s3 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Opentouch 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.

Similar boards