4 layers256.9 × 96.2 mm
4 layers71.7 × 62.4 mm
Project Aether
shiva233/Aether3Project Aether - A2DP Bluetooth Bridge to PC
- Size
- 71.7 × 62.4 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 91
- Nets
- 105
- Pads
- 283
- Tracks, vias
- 597, 260
- Pours
- 16
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Jun 2026
- Updated
- 6 Jul 2026
Overview
Project Aether is an open-source printed circuit board by shiva233, from the shiva233/Aether repository on GitHub. It is a 4-layer board of 71.7 × 62.4 mm with 91 parts on 105 nets, routed with 597 tracks and 260 vias.
It is built around the STM32C552CET6, BM83SM1-00TB and TLV62569DBVR-TP, with the MCP1825S-3302E/DB, USBLC6-2SC6 and GSB1C41110SSHR among its other parts. Its parts include 22 capacitors, 21 resistors, 6 ICs, 5 diodes and 2 connectors. It belongs with the radio and wireless and interfaces and adapters boards and the STM32 boards of this library.
Main components
6
STM32C552CET6
LQFP-48(7x7)LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
BM83SM1-00TB
SMD-50PSMD-50P Bluetooth Modules ROHSMicrochip TechnologyBluetooth Modules
TLV62569DBVR-TP
SOT-23-51 1.5MHz 2.7V~5.5V 2A 40uA Adjustable Buck Built-in No SOT-23-5 DC-DC Converters ROHSTECH PUBLICDC-DC Converters
MCP1825S-3302E/DB
SOT-223-3-40℃~+125℃@(Tj) 1 120uA 210mV@(500mA) 3.3V 500mA 60dB@(100Hz) 6V Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Short Circuit Protection SOT-223-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
GSB1C41110SSHR
USB-SMDUSB-SMD New Arrivals ROHSAmphenolUSB Connectors
README
README.mdAether 🎧
A USB-C powered Bluetooth-to-USB audio bridge that lets me connect my phone / Steam Deck with Bluetooth and send that audio straight into my PC as a USB audio input!
What is Aether? :0
Aether is basically a small USB-C dongle/box thing that pairs to my iPhone, Steam Deck, or other Bluetooth audio source, receives the audio wirelessly, and then sends it to my PC over USB so the computer sees it like a normal USB microphone / audio input device.
I wanted this because very often I want to mix audio from my Steam Deck or phone into my PC headphones while on call with friends or watching a movie, without needing random software, aux cables, capture cards, or weird Windows audio routing. So the idea is that Aether just sits between the device and my PC:
Phone / Steam Deck → Bluetooth → Aether → USB-C → PC → My ears :D
The project is also kind of a challenge project for me because it combines Bluetooth Classic audio, I2S digital audio, USB Audio Class, USB-C power/data, and a custom PCB power tree all in one board :D
Block Diagram
Coming soon, I promise!! I just need to make a cleaner one!!
Schematics:
Layout:
Top Layer | Bottom Layer |
Inner Layer | Inner Layer |
Extra Info:
- The Bluetooth Module: Microchip BM83 Bluetooth Stereo Audio Module
- The MCU: STM32C552CET6
- Bluetooth: Bluetooth Classic A2DP Sink
- Audio Path: BM83 decodes Bluetooth audio and outputs digital PCM over I2S
- USB: USB 2.0 Full-Speed device over USB-C
- PC Interface: USB Audio Class input device so Windows can recognize it without custom drivers
- Power: Powered fully from the PC through USB-C VBUS
- BM83 Power Rail: 3.6V Buck Regulator
- STM32 Power Rail: 3.3V LDO
- Stackup: 4-Layer Custom PCB (Signal - GND - GND - Signal)
Parts
91| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | LOGO | LOGO | G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** |
| 10 | 0.1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C9, C10, C11, C14, C15, C16, C17, C19, C22, C23 |
| 9 | TODO | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R13, R14, R15, R16, R17, R18, R19, R20, R21 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D2.5mm | ADAP_IN, P07, P12, P13, PB6, PB7, UART_RXD, UART_TXD |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2, C3, C4, C5 |
| 3 | 0R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R8, R9, R12 |
| 3 | LED_ARGB | Footprints:SMD4_UHD111A-FKA_CRW | D3, D4, D5 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R10, R11 |
| 2 | 10pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C20, C21 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C7, C8 |
| 2 | 5K1 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2 |
| 2 | 820R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R5, R6 |
| 2 | GREEN | LED_SMD:LED_0603_1608Metric | D1, D2 |
| 1 | +3V3 | TestPoint:TestPoint_Pad_D2.5mm | +3V3 |
| 1 | +3V6 | TestPoint:TestPoint_Pad_D2.5mm | +3V6 |
| 1 | +5V | TestPoint:TestPoint_Pad_D2.5mm | +5V |
| 1 | 0.5A HOLD PTC | Fuse:Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1 |
| 1 | 10uH | Inductor_SMD:L_1008_2520Metric | L1 |
| 1 | 16Mhz | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | 2.2uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C18 |
| 1 | 20k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4 |
| 1 | 4.7k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R7 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C13 |
| 1 | BM83SM1-00TB | Footprints:BM83_MCH | U2 |
| 1 | BOOT | Footprints:SW_SKRPACE010 | BOOT |
| 1 | DNP | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6 |
| 1 | GND | TestPoint:TestPoint_Pad_D2.5mm | GND |
| 1 | GSB1C41110SSHR | Footprints:AMPHENOL_GSB1C41110SSHR | J2 |
| 1 | MCP111T-300E/TT | Footprints:SOT-23_MC_MCH | U5 |
| 1 | MCP1825S-3302E/DB | Footprints:SOT-223_3MC_MCH | U3 |
| 1 | MUTE | Footprints:SW_SKRPACE010 | MUTE |
| 1 | PAIR | Footprints:SW_SKRPACE010 | PAIR |
| 1 | RESET | Footprints:SW_SKRPACE010 | NRST |
| 1 | STM32C552CET6 | Footprints:LQFP-48_STM | U4 |
| 1 | TLV62569DBVR | Footprints:SOT95P280X145-5N | U6 |
| 1 | TagConnect | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | VBUS | TestPoint:TestPoint_Pad_D2.5mm | VBUS |
Questions
How big is the Project Aether PCB?
It measures 71.7 × 62.4 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Project Aether use?
91 parts, built around the STM32C552CET6, BM83SM1-00TB, TLV62569DBVR-TP and MCP1825S-3302E/DB. 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 Project Aether KiCad files?
From the shiva233/Aether repository on GitHub, at the commit this page was made from: the board is PCB/Project Aether.kicad_pcb and its schematic PCB/MCU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Project Aether design in my own project?
Its repository states no licence, so its author keeps all rights: ask shiva233 before reusing the design.
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