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KINK-box

FunDeckHermit·KINK-box

KINK-box PCB layout, top view — open source ESP32 board by FunDeckHermit
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About the KINK-box PCB

KINK-box is an open source ESP32 PCB design by FunDeckHermit, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 100 × 60 mm, with 103 components from 30 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the CH221K, PCM5100A, TPA3118D2DAPR and BD33FC0FP-E2. By type, the board carries 46 resistors, 43 capacitors, 6 switches, 5 ICs and 1 connector.

It belongs with the audio, rf & radio and iot & wireless designs in this gallery.

From the project

Audio amplifier / Web radio based on ESP32-S3

A compact USB-C-powered stereo audio player and amplifier powered by an ESP32-S3 microcontroller.

KINK-box is a dedicated audio playback device with built-in amplification, WiFi connectivity, and a simple web interface. Stream audio to speakers or headphones with intuitive physical and web controls.

- USB-C Power Delivery: Powered by standard USB-C PD adapter (12V negotiated) - WiFi Connectivity: Built-in 2.4 GHz WiFi for streaming - Web Interface: Control playback and configuration from any browser - Stereo Audio Output: - Speaker terminals for direct loudspeaker connection - 3.5mm…

KINK-box, from the project README
From the project README

Main components on the KINK-box

CH221KPCM5100ATPA3118D2DAPRBD33FC0FP-E2ESP32-S3-WROOM-1

KINK-box bill of materials (BOM)

103 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH221K
U1
1
PCM5100A
U2
1
TPA3118D2DAPR
U3
1
BD33FC0FP-E2
BD33FC0FP
U4
1
ESP32-S3-WROOM-1
U202
1
USB4500-03-0-A
J201
2
744238701
FL1, FL2
4
465M111172501
Wurth Elektronik
SW1, SW2, SW3, SW4
1
KMR223GLFG
SW5
1
PLMG5-GH-V-T/R
~
SW6
2
1206B105K250CT
1uF
C1, C14
2
0805B225K250CT
2.2uF
C2, C3
4
0603B105K100CT
1uF
C4, C7, C10, C11
17
0603B104K500CT
100nF
C5, C15, C16, C17, C18, C26, C27, C28 +9
3
1206B106K250CT
10uF
C6, C201, C208
4
0603B224K500CT
220nF
C8, C9, C12, C13
4
0603B684K100CT
680nF
C19, C20, C21, C22
1
865060663013
470uF
C23
2
1206B106K250CT
10uF
C24, C25
2
0603B222K500CT
2.2nF
C31, C32
Show 10 more
QtyPartRefs
2
1206B106K250CT
10uF
C203, C204
9
RC0603FR-0747KL
47K
R1, R2, R3, R28, R32, R36, R38, R39 +1
5
RC0603FR-07470RL
470R
R4, R5, R6, R7, R8
5
RC0603FR-0710KL
10K
R9, R10, R11, R14, R15
5
RC0603FR-07FRE131KL
1K0
R12, R13, R16, R17, R204
2
RC0603FR-075K6L
5K6
R18, R43
3
RC0603FR-0722KL
22K
R19, R20, R21
12
RC0603FR-07220RL
220R
R22, R23, R24, R25, R26, R27, R29, R30 +4
3
RC0603FR-075K1L
5K1
R37, R41, R42
2
22R
R230, R231

KINK-box design files

The KiCad project lives in the FunDeckHermit/KINK-box repository on GitHub; these links point at the commit this page was built from.

KINK-box: common questions

What microcontroller does the KINK-box use?

The KINK-box is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the KINK-box PCB?

The KINK-box measures 100 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KINK-box?

103 components, from 30 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 KINK-box design files?

From the FunDeckHermit/KINK-box 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 KINK-box design in my own project?

Yes, under the terms of its Apache-2.0 license, which FunDeckHermit chose for the repository.

Can I test firmware for the KINK-box 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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