4 layers100 × 100 mm
NotSmart Speaker
BBroadbent/NotSmart-Speaker
A open-hardware, local-first "dumb" smart speaker powered by an ESP32, PCM5100A DAC, TPA3118 Class-D amp, and 20V USB-PD.
102 parts
2 layers100 × 60 mm
KINK box
FunDeckHermit/KINK-box2Audio amplifier / Web radio based on ESP32-S3
- Size
- 100 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 112
- Nets
- 104
- Pads
- 412
- Tracks, vias
- 722, 165
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Jul 2026
- Updated
- 10 Sep 2026
Overview
KINK box is an open-source printed circuit board by FunDeckHermit, from the FunDeckHermit/KINK-box repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 100 × 60 mm with 112 parts on 104 nets, routed with 722 tracks and 165 vias.
It is built around the ESP32-S3-WROOM-1-N8, TPA3118D2DAPR and BD33FC0FP-E2, with the CH221K, PCM5100APW and 0603B104K500CT among its other parts. Its parts include 46 resistors, 43 capacitors, 6 ICs, 6 switches and 4 connectors. It belongs with the audio and music boards and the ESP32 boards of this library.
Main components
12
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TPA3118D2DAPR
HTSSOP-32-EP-6.1mm-40℃~+85℃ -70dB 0.1% 102dB 2-Channel 30Wx2@8Ω 4.5V~26V 50mA 90% Class D Enable/shutdown function、Filterless architecture、ESD protection、Overvoltage protection、Analog voltage gain、Integrated PLL HTSSOP-32-EP-6.1mm Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
BD33FC0FP-E2
TO-252-25℃~+85℃@(Ta) 1 1A 26.5V 3.3V 500uA 700mV@(500mA) Fixed Over Current Protection、Thermal Shutdown Positive TO-252 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSROHM SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CH221K
SOT-23-6-40℃~+105℃ 100W 5V、9V、12V、15V、20V PD 3.0 Power Receiver Controller SOT-23-6 USB PD ROHSWCH (Nanjing Qinheng Microelectronics)USB PD
PCM5100APW
TSSOP-20-40℃~+130℃ 1.8V~3.3V 2 32 384kHz 50MHz Audio Decoder I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
0603B104K500CT
0603100nF 50V X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSWalsin TechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT
RC0603FR-0710KL
UncategorisedUnknown maker0603B105K100CT
060310V 1uF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSWalsin TechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT0603B224K500CT
0603220nF 50V X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSWalsin TechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT0603B684K100CT
060310V 680nF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSWalsin TechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT
1206B106K250CT
120610uF 25V X7R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSWalsin TechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT1206B105K250CT
12061uF 25V X7R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSWalsin TechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT
README
README.mdKINK-box
A compact USB-C-powered stereo audio player and amplifier powered by an ESP32-S3 microcontroller.
Overview
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.
Features
- 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 line-level jack for headphones or external amplifiers
- Physical Controls:
- Four RGB-illuminated buttons for quick access
- Additional tactile button and navigation switch for volume and menu control
- Class-D Amplifier: High-efficiency 30W stereo amplifier built-in
Quick Start
- Assembly: Reference the component placement guide and Bill of Materials
- Power On: Connect a USB-C Power Delivery adapter
- Connect: Join the device WiFi network
- Access: Open
http://<device-ip>in your browser - Play: Use the web interface or physical buttons to select and play audio
- Volume: Adjust using physical controls or the web interface
Hardware Files
All manufacturing and design files are in kicad-artifacts/:
- Gerbers:
KINK-box_gerbers.zip- For PCB fabrication - Schematics:
KINK-box_schematic.pdf - 3D Model:
KINK-box_board.step - Interactive BOM:
ibom.html
License
Apache License 2.0 - see LICENSE for details.
KINK-box - Simple stereo audio player with built-in amplification and WiFi.
Parts
112| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 100nF | Capacitor_SMD:C_0603_1608Metric | C15, C16, C17, C18, C26, C27, C28, C29, C30, C41, C42, C43, C202, C205, C206, C207 +1 |
| 12 | 220R | Resistor_SMD:R_0603_1608Metric | R22, R23, R24, R25, R26, R27, R29, R30, R31, R33, R34, R35 |
| 9 | 47K | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R28, R32, R36, R38, R39, R40 |
| 5 | 10K | Resistor_SMD:R_0603_1608Metric | R9, R10, R11, R14, R15 |
| 5 | 1K0 | Resistor_SMD:R_0603_1608Metric | R12, R13, R16, R17, R204 |
| 5 | 470R | Resistor_SMD:R_0603_1608Metric | R4, R5, R6, R7, R8 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C4, C7, C10, C11 |
| 4 | 220nF | Capacitor_SMD:C_0603_1608Metric | C8, C9, C12, C13 |
| 4 | 465M111172501 | 0_NRD_footprints:SW_Wurth_WS-PBTL_465M111172501 | SW1, SW2, SW3, SW4 |
| 4 | 680nF | Capacitor_SMD:C_0603_1608Metric | C19, C20, C21, C22 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H103, H104, H105, H106 |
| 3 | 10uF | Capacitor_SMD:C_1210_3225Metric | C6, C201, C208 |
| 3 | 22K | Resistor_SMD:R_0603_1608Metric | R19, R20, R21 |
| 3 | 5K1 | Resistor_SMD:R_0603_1608Metric | R37, R41, R42 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C203, C204 |
| 2 | 10uF | Capacitor_SMD:C_1206_3216Metric | C24, C25 |
| 2 | 1uF | Capacitor_SMD:C_1206_3216Metric | C1, C14 |
| 2 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C31, C32 |
| 2 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 2 | 22R | Resistor_SMD:R_0603_1608Metric | R230, R231 |
| 2 | 5K6 | Resistor_SMD:R_0603_1608Metric | R18, R43 |
| 2 | 744238701 | 0_NRD_footprints:L_Wurth_WE-CMDC-7060 | FL1, FL2 |
| 2 | QT02CSF83H0000G | 0_NRD_footprints:QT02CSF83H0000G | J2, J3 |
| 1 | 470uF | 0_NRD_footprints:CP_Wurth_WCAP-ASLL-D16L17 | C23 |
| 1 | BD33FC0FP | Package_TO_SOT_SMD:TO-252-2 | U4 |
| 1 | CH221K | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | ESP32-S3-WROOM-1 | _projectlib:ESP32-S3-WROOM-1 | U202 |
| 1 | KMR223GLFG | 0_NRD_footprints:SW_Push_1P1T_NO_CK_KMR2 | SW5 |
| 1 | MountingHole_Pad | 0_NRD_footprints:ESP-solderhole | H1 |
| 1 | P7803-2000R-S | Converter_DCDC:Converter_DCDC_RECOM_R-78HB-0.5L_THT | U5 |
| 1 | PCM5100A | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U2 |
| 1 | PJ-328A0-B | 0_NRD_footprints:PJ-328A0-B | J1 |
| 1 | TPA3118D2DAPR | Package_SO:HTSSOP-32-1EP_6.1x11mm_P0.65mm_EP5.2x11mm_Mask4.11x4.36mm | U3 |
| 1 | USB4500-03-0-A | _projectlib:USB_C_Receptacle_USB4500-03-0-A | J201 |
| 1 | ~ | 0_NRD_footprints:SW_PLMG5-GH | SW6 |
Similar boards
- 4 layers74 × 36.3 mm
Loudcardsdevice
gelotek-com/Anki-In-Hardware
Building a physical flashcard device inspired by Anki and spaced repetition.
87 parts2 - 4 layers25.9 × 57 mm
RadarAdapter
Brazil-L/Lumeward-OpenSource
Open-source Lumeward firmware and development tools
35 parts2Apache-2.0 - 4 layers100 × 100 mm
- 4 layers85 × 56 mm
- 2 layers200 × 55 mm
- 4 layers130 × 105 mm
HomeDeck
Kilan777/HomeDeck
Jarvis HomeDeck: a Raspberry Pi CM4 carrier board and voice-assistant software for a 7-inch smart display (KiCad hardware, generated from Python, plus the Python/JS assistant)
228 parts1 - 4 layers90 × 56.5 mm
Questions
How big is the KINK box PCB?
It measures 100 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the KINK box use?
112 parts, built around the ESP32-S3-WROOM-1-N8, TPA3118D2DAPR, BD33FC0FP-E2 and CH221K. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the KINK box KiCad files?
From the FunDeckHermit/KINK-box repository on GitHub, at the commit this page was made from: the board is KINK-box.kicad_pcb and its schematic KINK-box.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the KINK box design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).