4 layers32 × 66 mm
4 layers60 × 60 mm
AUXSPACE core pcb
AUXSPACEeV/AUX-CoreCore/Master PCB for the Auxspace Avionics stack
- Size
- 60 × 60 mm
- Copper layers
- 4
- Thickness
- 1.58 mm
- Parts
- 83
- Nets
- 80
- Pads
- 406
- Tracks, vias
- 769, 117
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 11 Aug 2026
- Updated
- 26 Oct 2026
Overview
AUXSPACE core pcb is an open-source printed circuit board by AUXSPACEeV, from the AUXSPACEeV/AUX-Core repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 60 × 60 mm with 83 parts on 80 nets, routed with 769 tracks and 117 vias.
It is built around the ESP32-S3-WROOM-1-N8, TCAN334D and LIS3MDL, with the CH224A, TPS7B8601QDDARQ1 and 2N7002K among its other parts. Its parts include 24 resistors, 21 capacitors, 8 ICs, 7 connectors and 6 diodes. It belongs with the ESP32 boards of this library.
Main components
9
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
TCAN334D
SOIC-8-40℃~+125℃ 1Mbps 20uA 3V~3.6V 60mA CAN Transceiver SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
LIS3MDL
LGA-12(2x2)-40℃~+85℃ 1.9V~3.6V 16bit 1uA、40uA、270uA I2C、SPI ±1.6mT、±1.2mT、±8Gs、±4Gs ±1.6mT、±1.2mT、±8Gs、±4Gs LGA-12(2x2) 3D Magnetic Sensors ROHSSTMicroelectronics3D Magnetic SensorsCH224A
ESSOP-10-40℃~+105℃ 140W 1C 4V~30V 5V、9V、12V、15V、20V、28V PD 3.2、BC 1.2、AVS、PPS、SPR Power Receiver Controller ESSOP-10 USB PD ROHSWCH (Nanjing Qinheng Microelectronics)USB PD
TPS7B8601QDDARQ1
SO-8-40℃~+150℃@(Tj) 1 1.2V~18V 26uA 40V 500mA 570mV@(500mA) 70dB@(1kHz) Adjustable Over Current Protection、Thermal shutdown、Enable control、Input under-voltage protection、Operation status indication Positive SO-8 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
2N7002K
SOT-23-55℃~+150℃ 1 N-channel 1.2Ω@10V、1.4Ω@5V 1.6V 2.9pF 300pC@4.5V 30pF 380mA 4.2pF 540mW 60V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsDMP3099L
SOT-23-55℃~+150℃ 1 P-Channel 1.08W 11nC@10V 2.1V 3.8A 30V 41pF 563pF 99mΩ@4.5V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
SMAJ22A
DO-214AC(SMA)-65℃~+150℃ 11.3A@10/1000us 1uA 22V 26.9V 35.5V 400W@10/1000us IEC 61000-4-2、IEC 61000-4-4 TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
WST-0904T
插件,D=9.2mm-20℃~+70℃ 2.7kHz 2V~5V 4.5mm 80dB 9.2mm Active Buzzer (Built-in Driving Circuit) Electromagnetic 插件,D=9.2mm Buzzers ROHSSoberton Inc.Buzzers
README
README.mdAUX-Core
Core/Sensor PCB of the Auxspace Avionics stack, built around an ESP32-S3-WROOM-1.
AUX-Core is our first stackable flight computer. It operates on a powerful ESP32S3 MCU with sensors for attitude tracking, 9V USB Power Delivery or an external Power source and can interface with other Auxspace Avionics stack components, such as AUX-Pwr or AUX-Tel.
Features
- Barometer DPS310/DPS368 for altitude computation
- IMU STM LSM6DSO32x for acceleration and rotation data
- High-G accelerometer STM LSM6DSV320XTR (±320 g) when things get tough
- Magnetometer STM LIS3MDL for attitude reference
- Buzzer for easier commissioning and recovery
- CAN bus (TCAN334) for communication with the other stack PCBs
- µSD card for logging
- USB-C with 9 V Power Delivery (CH224A sink) for programming, debugging and supply
- Stack connector Samtec TFM-110-02-S-D-A / SFM-110-02-L-D-A for the avionics stack
- Status LEDs for power, SD activity and board state
Stack connector
The board carries a mating Samtec pin/socket pair (2x10, 1.27 mm), so Core boards and expansion PCBs stack directly on top of each other. The connector routes the switched and unswitched VBus rails, CAN, I²C, UART and the ARM signal through the stack.
Power supply
The board is supplied over USB-C. The CH224A PD sink negotiates 9 V from the charger; the on-board TPS7B8601 regulator derives the 3V3 rail from it. VBus is distributed to the stack both directly and through the switched rails.
Programming
The ESP32-S3 is programmed via USB-C or the UART connection. To enter download mode, press and hold BOOTSEL at startup.
Repository layout
| Folder | Content |
|---|---|
1_Blockschaltbild | Block diagrams |
2_Designunterlagen | Pin maps, calculations and design documents |
3_Elektronik | KiCad project, symbols, footprints and 3D models |
4_Simulationen | LTspice simulations |
5_Tests | Test results and oscillograms |
6_Export-Fertigungsdaten | Manufacturing data, BOMs, schematics and STEP files |
License
Hardware is released under the CERN Open Hardware Licence Version 2 - Permissive,
see LICENSE.
Parts
83| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C8, C9, C12, C13, C14, C16, C18, C20, C22, C23, C24 |
| 6 | 4,7k | Resistor_SMD:R_0603_1608Metric | R9, R10, R11, R14, R16, R23 |
| 4 | 0R | Resistor_SMD:R_0603_1608Metric | R1, R3, R5, R7 |
| 4 | 1µF | Capacitor_SMD:C_0603_1608Metric | C10, C17, C19, C21 |
| 4 | 2,7k | Resistor_SMD:R_0603_1608Metric | R6, R18, R21, R22 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad_TopBottom | H1, H2, H3, H4 |
| 3 | 10µF | Capacitor_SMD:C_0603_1608Metric | C7, C15, C25 |
| 3 | green | LED_SMD:LED_0603_1608Metric | D3, D4, D5 |
| 2 | 11k | Resistor_SMD:R_0603_1608Metric | R4, R15 |
| 2 | 22R | Resistor_SMD:R_0603_1608Metric | R19, R20 |
| 2 | 434331013822 | AUXSPACE:SW_Wurth_WS-TASU_434331013822 | SW2, SW3 |
| 2 | 5,1k | Resistor_SMD:R_0603_1608Metric | R30, R33 |
| 2 | 62R | Resistor_SMD:R_0603_1608Metric | R2, R17 |
| 2 | Conn_02x10_Odd_Even | AUXSPACE:SAMTEC_SFM-110-02-L-D-A-P-TR | J2, J4 |
| 2 | Conn_02x10_Odd_Even | AUXSPACE:SAMTEC_TFM-110-02-S-D-A | J1, J3 |
| 2 | ~ | AUXSPACE:AUXSPACE_Logo_2_5mm | Logo2, Logo2 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R32 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R34 |
| 1 | 150 µF | AUXSPACE:CP_Wurth_WCAP-ASLL-D6.3L5.5 | C3 |
| 1 | 2N7002K | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | 629722000214 | AUXSPACE:J_Wurth_WR-USB_629722000214 | J7 |
| 1 | 693072010801 | AUXSPACE:J_Wurth_WR-CRD_693072010801 | J6 |
| 1 | 8240136 | AUXSPACE:WE-TVS_SOT143-4L | D10 |
| 1 | 824094024 | AUXSPACE:WE-TVS_824094024_SOT23-3L | D12 |
| 1 | CH224A | AUXSPACE:ESSOP-10-1EP_3.9x5.0mm_P1mm_EP2.1x3.3mm | U8 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | DMP3099L | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | ESP32-S3-WROOM-1 | AUXSPACE:ESP32-S3-WROOM-1 | U4 |
| 1 | LIS3MDL | Package_LGA:LGA-12_2x2mm_P0.5mm | U7 |
| 1 | LOGO | AUXSPACE:stack_pwr | |
| 1 | LOGO | AUXSPACE:stack_data | |
| 1 | LOGO | AUXSPACE:mcu_meme | G*** |
| 1 | LOGO | AUXSPACE:hampter | G*** |
| 1 | LOGO | AUXSPACE:auxolotl | G*** |
| 1 | LSM6DSO32XTR | AUXSPACE:LGA_O32XTR_STM | U5 |
| 1 | LSM6DSV320XTR | AUXSPACE:LGA-14L_2p5X3X0p83_STM | U1 |
| 1 | MS5607-02BA | AUXSPACE:MS5607-02BA03 | U6 |
| 1 | SMAJ22A | AUXSPACE:WE-TVS_SMAJ22A | D11 |
| 1 | TCAN334 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | TPS7B8601QDDARQ1 | AUXSPACE:Texas_R-PDSO-G8_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | U2 |
| 1 | WST-0904T | AUXSPACE:Buzzer_WST-0906T | BZ1 |
| 1 | ~ | AUXSPACE:aisler_logo_5mm | Logo1 |
Questions
How big is the AUXSPACE core pcb PCB?
It measures 60 × 60 mm and has 4 copper layers, 1.58 mm thick.
What parts does the AUXSPACE core pcb use?
83 parts, built around the ESP32-S3-WROOM-1-N8, TCAN334D, LIS3MDL and CH224A. 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 AUXSPACE core pcb KiCad files?
From the AUXSPACEeV/AUX-Core repository on GitHub, at the commit this page was made from: the board is 3_Elektronik/KiCad/AUXSPACE_core_pcb.kicad_pcb and its schematic 3_Elektronik/KiCad/AUXSPACE_core_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AUXSPACE core pcb design in my own project?
Its repository publishes it under the CERN-OHL-P-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).
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