2 layers63 × 31 mm
Barometer PCB
BLESS-BEXUS/Dual-Barometer-System-PCB
Open-source dual-barometer PCB with redundant pressure measurement and onboard EEPROM calibration.
25 parts
2 layers96.3 × 49.5 mm
Memory Ethernet PCB
BLESS-BEXUS/Storage-Ethernet-System-PCBOpen-source PCB design for high-speed storage and Ethernet networking.
- Size
- 96.3 × 49.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 55
- Nets
- 56
- Pads
- 226
- Tracks, vias
- 412, 114
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Jun 2026
- Updated
- 14 Jun 2026
Overview
Memory Ethernet PCB is an open-source printed circuit board by BLESS-BEXUS, from the BLESS-BEXUS/Storage-Ethernet-System-PCB repository on GitHub. It is a 2-layer board of 96.3 × 49.5 mm with 55 parts on 56 nets, routed with 412 tracks and 114 vias.
It is built around the USBLC6-2SC6, W5500 and KGM21AR71C105JU, with the AC0805FR-7W2K2L, RC0603JR-070RL and CRGP0805F10R among its other parts. Its parts include 20 capacitors, 15 resistors, 5 ICs, 3 connectors and 1 diode. It belongs with the interfaces and adapters boards of this library.
Main components
10
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)
W5500
LQFP-48_7x7-40℃~+85℃ 10BASE-T、100BASE-TX 3.3V 32KB SPI SPI Wake-up function、Programmable LED indication、Low-power mode Yes LQFP-48(7x7) Ethernet Controllers ROHSWIZNETEthernet ControllersKGM21AR71C105JU
-Multilayer Ceramic Capacitors MLCC - SMD/SMTKyocera AVX
AC0805FR-7W2K2L
0805-55℃~+155℃ 150V 2.2kΩ 250mW Thick Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
RC0603JR-070RL
UncategorisedUnknown makerCRGP0805F10R
0805-55℃~+155℃ 10Ω 150V 333mW Thick Film Resistor ±1% ±400ppm/℃ 0805 Chip Resistor - Surface Mount ROHSTE ConnectivityChip Resistor - Surface Mount
CGA5L1X7R1C106K160AC
120610uF 16V X7R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSTDKMultilayer Ceramic Capacitors MLCC - SMD/SMT
CR0603-FX-3300ELF
0603-55℃~+155℃ 100mW 330Ω 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSBournsChip Resistor - Surface MountAC0805JR-134K7L
0805Chip Resistor - Surface MountYAGEO
LTST-C190KRKT
0603-30℃~+85℃ 130° 20mA 2V 62.5mW 631nm 639nm 99mcd Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
README
README.md
Storage & Ethernet System
A compact PCB designed to provide redundant onboard storage and wired Ethernet connectivity for embedded systems where robustness, data integrity and easy integration are key.
Overview
The main goal of this PCB is to improve the reliability of embedded data logging and communication systems.
It is especially useful in applications where removable media such as microSD cards may be affected by vibration, mechanical stress, poor contact or harsh environmental conditions.
The board is designed to support:
- Reliable onboard data storage.
- Redundant logging.
- Wired Ethernet communication.
- Compact integration.
- Post-operation data recovery.
Main Features
- Dual SPI NOR Flash memories.
- Independent chip-select lines for each memory.
- WIZnet W5500 hardware TCP/IP Ethernet controller.
- SiTime SiT5000 25 MHz TCXO clock source.
- SPI interface with the main controller.
- ESD-aware external interface design.
- Ethernet analog supply isolation.
- Custom KiCad symbols, footprints and 3D models.
Contributing
· Code of Conduct · Contributing Guide ·
We welcome collaboration from the aerospace and software community. For major changes or data inquiries, please open an issue first.
License
Copyright © 2025-2026 The BLESS Project TeamThis Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
Credits & Team
Supported by the REXUS/BEXUS Program and our generous sponsors.
Parts
55| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C6, C7, C8, C12, C15, C16, C17, C18, C19, C20 |
| 4 | 3R3 | Resistor_SMD:R_0805_2012Metric | R4, R5, R6, R7 |
| 4 | 49R9 | Resistor_SMD:R_0805_2012Metric | R11, R12, R13, R14 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | MH1, MH2, MH3, MH4 |
| 3 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3 |
| 2 | 1µ | Capacitor_SMD:C_0805_2012Metric | C5, C10 |
| 2 | 2k2 | Resistor_SMD:R_0805_2012Metric | R8, R9 |
| 2 | 6800p | Capacitor_SMD:C_0805_2012Metric | C13, C14 |
| 2 | Infineon S25FL128LAGMFM010 | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U1, U2 |
| 1 | 0.022µ | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 10R | Resistor_SMD:R_0805_2012Metric | R15 |
| 1 | 10µ | Capacitor_SMD:C_1206_3216Metric | C4 |
| 1 | 12k4 | Resistor_SMD:R_0805_2012Metric | R10 |
| 1 | 330R | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 4k7 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 4µ7 | Capacitor_SMD:C_0805_2012Metric | C9 |
| 1 | HH-1M1608-121JB | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | LED_Red_631nm | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | RJ45_Wuerth_74980104400 | BLESS:RJ45_Wuerth_74980104400 | J3 |
| 1 | SIT5000 (25MHz TCXO) | BLESS:Oscillator_SMD_SiT_PQFN-4Pin_2.5x2.0mm | U4 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_A_Wurth_614004135023 | BLESS:USB_A_Wurth_614004135023 | J2 |
| 1 | W5500 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U5 |
| 1 | WR-BHD_Conn_02x07_Odd_Even | Connector_IDC:IDC-Header_2x07_P2.54mm_Vertical | J1 |
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Questions
How big is the Memory Ethernet PCB PCB?
It measures 96.3 × 49.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Memory Ethernet PCB use?
55 parts, built around the USBLC6-2SC6, W5500, KGM21AR71C105JU and AC0805FR-7W2K2L. 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 Memory Ethernet PCB KiCad files?
From the BLESS-BEXUS/Storage-Ethernet-System-PCB repository on GitHub, at the commit this page was made from: the board is Memory_Ethernet_PCB.kicad_pcb and its schematic Memory_Ethernet_PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Memory Ethernet PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask BLESS-BEXUS before reusing the design.