4 layers36.3 × 21.1 mm
Board main wroom
m-kozlowski/airbridge
Wireless adapter for AirSense/AirCurve 10 devices
37 parts26GPL-3.0
4 layers24 × 33.2 mm
Interface
m-kozlowski/airbridge26Wireless adapter for AirSense/AirCurve 10 devices
- Size
- 24 × 33.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 26
- Pads
- 82
- Tracks, vias
- 256, 32
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Mar 2026
- Updated
- 7 Nov 2026
Overview
Interface is an open-source printed circuit board by m-kozlowski, from the m-kozlowski/airbridge repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 24 × 33.2 mm with 22 parts on 26 nets, routed with 256 tracks and 32 vias.
It is built around the LM66100DCK. Its parts include 8 capacitors, 7 resistors, 3 ICs, 2 connectors and 1 inductor. It belongs with the interfaces and adapters boards of this library.
Main components
1README
README.mdAirBridge
ESP32 bridge for ResMed AirSense 10 CPAP.
Using an AirSense 11? See AirCANnect.
What it does
- Web UI - configure therapy settings, view sleep reports, live pressure/flow waveforms, and manage oximeters.
- SD recording and export - records therapy in Air10 EDF format and synchronizes files to SMB and SleepHQ on SD-capable hardware.
- Oximetry - feeds SpO2/pulse into AirSense for native SAD.edf recording. BLE (Nonin 3150, O2Ring, O2Ring-S, Checkme O2, WS20A, generic PLX/HR sensors) and UDP for integrating unsupported devices.
- ResMed firmware - upload and flash firmware over WiFi; keep images and save firmware dumps on SD-capable hardware.
- TCP-UART bridge - send commands to AirSense over WiFi.
First setup
Follow the Quick Start to wire and flash your board.
On a fresh installation, connect to its airbridge_... WiFi network
(password airbridge), open http://192.168.4.1/, and complete the setup wizard.
Default Web UI login: admin / airbridge.
For HTTP integrations, see the HTTP API reference.
Related tools
airbreak-plus contains Python tools for direct serial/TCP interaction:
python/resmed_flash.py -p tcp:airbridge- flash AirSense firmwarepython/resmed_config.py -p tcp:airbridge- read/write AirSense settings
Both support serial (-p /dev/ttyUSB0) and TCP (-p tcp:hostname) with --tcp-mode=raw|transparent|text.
Screenshots
| Dashboard | Edf Sync | Charts |
|---|---|---|
 |  |  |
| Sleep Report | Clinical Settings | Oximetry |
|---|---|---|
 |  |  |
License
GPL v3. See LICENSE.
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100nF 50V | Capacitor_SMD:C_0603_1608Metric | C2, C3, C9, C16 |
| 2 | 100R | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 22uF 25V X5R | Capacitor_SMD:C_0805_2012Metric | C4, C5 |
| 1 | 10nF 50V | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 10uF 50V X7R | Capacitor_SMD:C_1210_3225Metric | C1 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 3k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 4.7uH 3.5A Isat | airbridge:L_SRP4020TA | L1 |
| 1 | 5 soldered pins / 1.27mm | airbridge:SolderPins_1x05_P1.27mm | J4 |
| 1 | 68k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | AP63205 5V | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | AirSense 10 edge | airbridge:AirSense10_Edge | J1 |
| 1 | CUT / normally closed | airbridge:Input_CutBridge | JP1 |
| 1 | LM66100 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U7 |
| 1 | TBD / DNP | Resistor_SMD:R_1206_3216Metric | R30 |
| 1 | TPS26621 eFuse | Package_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.65x2.4mm | U3 |
Questions
How big is the Interface PCB?
It measures 24 × 33.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Interface use?
22 parts, built around the LM66100DCK. 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 Interface KiCad files?
From the m-kozlowski/airbridge repository on GitHub, at the commit this page was made from: the board is hardware/pcb/board_interface/interface.kicad_pcb and its schematic hardware/pcb/board_interface/interface.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Interface design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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