HardLabs

ESP-Audio-Processor

hito-ren·ESP-Audio-Processor·Schematic & PCB/ATP.kicad_pcb

ESP-Audio-Processor PCB layout, top view — open source ESP32 board by hito-ren

About the ESP-Audio-Processor PCB

ESP-Audio-Processor is an open source ESP32 PCB design by hito-ren, published on GitHub. It is a 4-layer board measuring 49.4 × 49.9 mm, with 75 components from 36 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the TLV320AIC3254IRHBR, LM386 and XC6220B331MR-G. By type, the board carries 37 capacitors, 14 connectors, 9 resistors, 6 ICs, 6 diodes and 2 switches.

It belongs with the audio designs in this gallery.

ESP-Audio-Processor, from the project README
From the project README

Main components on the ESP-Audio-Processor

TLV320AIC3254IRHBRESP32-C3-WROOM-02LM386XC6220B331MR-G

ESP-Audio-Processor bill of materials (BOM)

75 components, 36 distinct parts.

QtyPartRefs
1
TLV320AIC3254IRHBR
U1
1
ESP32-C3-WROOM-02
U2
2
LM386
U4, U7
2
XC6220B331MR-G
U9, U10
4
Conn_01x02_Pin
J1, J3, J9, J21
1
Conn_01x04_Pin
J2
2
AudioJack4
J4, J7
1
USB_B_Micro
J5
2
Conn_01x05_Pin
J6, J22
1
Screw_Terminal_01x03
J8
1
Conn_01x01_Pin
J10
1
Conn_01x03_Pin
J12
1
Barrel_Jack
J19
1
600mA
F2
2
SW_Push
SW1, SW2
2
ESD9B5.0ST5G
D7, D8
2
1N5817
D9, D10
2
LED
D11, D12
2
1u
C1, C4
10
0.1u
C2, C5, C6, C9, C10, C16, C25, C29 +2
Show 16 more
QtyPartRefs
5
10u
C3, C15, C34, C39, C40
3
2.2u
C7, C8, C13
2
100uF
C11, C22
1
0.1u
C12
2
10uF
C23, C31
1
0.01u
C24
4
22nF
C26, C27, C33, C35
2
100uF
C28, C36
1
1u
C30
4
10u
C42, C43, C44, C45
2
10k
R1, R3
1
3.3k
R2
2
15
R4, R5
2
1k
R6, R7
1
150
R14
1
68
R16

ESP-Audio-Processor design files

The KiCad project lives in the hito-ren/ESP-Audio-Processor repository on GitHub; these links point at the commit this page was built from.

ESP-Audio-Processor: common questions

What microcontroller does the ESP-Audio-Processor use?

The ESP-Audio-Processor is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the ESP-Audio-Processor PCB?

The ESP-Audio-Processor measures 49.4 × 49.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the ESP-Audio-Processor?

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

Where can I download the ESP-Audio-Processor design files?

From the hito-ren/ESP-Audio-Processor repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP-Audio-Processor design in my own project?

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

Can I test firmware for the ESP-Audio-Processor 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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