2 layers25 × 61 mm
2 layers39.9 × 37.3 mm
Mynd esp board
makeTVee/MYNDlights7Adding lights to a Teufel Mynd bluetooth speaker
- Size
- 39.9 × 37.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 25
- Pads
- 76
- Tracks, vias
- 122, 31
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Mar 2026
- Updated
- 21 May 2026
Overview
Mynd esp board is an open-source printed circuit board by makeTVee, from the makeTVee/MYNDlights repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 39.9 × 37.3 mm with 16 parts on 25 nets, routed with 122 tracks and 31 vias.
It is built around the PCA9536DP and SY6280AAAC. Its parts include 3 capacitors, 3 resistors, 3 ICs and 2 connectors. It belongs with the audio and music and radio and wireless boards and the ESP32 boards of this library.
Main components
2
PCA9536DP
TSSOP-8-40℃~+85℃ 1 2.3V~5.5V 250nA 25mA 4 400kHz I2C、SMBus Reset function TSSOP-8 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
SY6280AAAC
SOT-23-5-40℃~+125℃ 1 2.4V~5.5V 2A 63mΩ Active High High Side Switch Overcurrent Protection(OCP)、Over Temperature Protection SOT-23-5 Power Distribution Switches ROHSSilergy CorpPower Distribution Switches
README
README.mdMYNDlights
Addressable LED mod with custom 3D-printed front panels for the Teufel MYND open-source Bluetooth speaker. Runs WLED on an ESP32-S3 with audio-reactive effects driven by I2S bus sniffing.
How It Works
The ESP32-S3 operates as an I2S slave, passively sniffing the I2S data line between the MYND's Bluetooth module and its amplifier. This enables audio-reactive LED effects without any active signal interception or modification to the audio path.
WLED was recompiled with the generic I2S driver configured in slave mode to make this work.
A custom flex PCB taps the I2S connector on the mainboard — no soldering required (see Installation).
Hardware
| Component | Details |
|---|---|
| MCU | Seeed XIAO ESP32-S3 |
| LEDs | WS2812B (NeoPixel-compatible) |
| Wiring | FFC cables (6-wire flex for LED power + data) |
| Interface | Custom flex PCB + rigid carrier PCB |
Variants
Ring — 40 LEDs
Ring — Teufel Logo
Ring — 100 LEDs
Matrix — 512 LEDs (32×16)
Transparent LED matrix mounted behind the speaker grille, LEDs placed between the grille holes.
CAD drawing
Installed Matrix PCB
Front with the LEDs
Installation
PCB
Custom PCBs handle I2S signal tapping and 5V power distribution for the ESP32-S3.
The flex PCB is dimensioned so its holes are slightly undersized relative to the mainboard connector. No soldering needed — press-fit and secure with the two existing screws.
The subwoofer blocks direct routing near the connector, so signals are carried via FFC cable to the upper-right corner of the enclosure.
The LED harness uses a 6-wire flex cable (2× 5V, 2× GND, 2× DATA).
Future work: Low-battery LED shutoff via STM32 I2C interface.
Repository Structure
MYNDlights/
├── CAD/ # 3D models for front panels
└── Kicad/ # PCB schematics and layoutLicense
BSD 2-Clause "Simplified" License.
References
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | TestPoint | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1, TP2, TP3, TP4, TP5 |
| 3 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 6k8 | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | Conn_01x06_Pin | easyeda2kicad:FPC-SMD_F1003-ZV-06-25T-R | J2 |
| 1 | Conn_01x12_Pin | Connector_FFC-FPC:TE_1-84953-2_1x12-1MP_P1.0mm_Horizontal | J4 |
| 1 | PCA9536DP | Package_SO:TSSOP-8_3x3mm_P0.65mm | U1 |
| 1 | SY6280AAAC | easyeda2kicad:TSOT-23-5_L2.9-W1.6-P0.95-LS2.8-BL | U3 |
| 1 | XIAO-ESP32-S3-SMD | XIAO_Series_Footprints:XIAO-ESP32-S3-SMD | U2 |
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Questions
How big is the Mynd esp board PCB?
It measures 39.9 × 37.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mynd esp board use?
16 parts, built around the PCA9536DP and SY6280AAAC. 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 Mynd esp board KiCad files?
From the makeTVee/MYNDlights repository on GitHub, at the commit this page was made from: the board is Kicad/mynd_esp_board/mynd_esp_board.kicad_pcb and its schematic Kicad/mynd_esp_board/mynd_esp_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mynd esp board design in my own project?
Its repository publishes it under the BSD-2-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).