6 layers90.2 × 95.9 mm
Board sierra
visionspacetec/VST104-Sierra
VST104 single OBC board - referred as board_sierra
245 parts10
6 layers90.2 × 95.9 mm
Board delta
visionspacetec/VST104-Delta1VST104 double OBC board - referred as board_delta
- Size
- 90.2 × 95.9 mm
- Copper layers
- 6
- Thickness
- 1.57 mm
- Parts
- 475
- Nets
- 634
- Pads
- 2,734
- Tracks, vias
- 8,497, 1,141
- Pours
- 43
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 19 Nov 2020
- Updated
- 25 Nov 2020
Overview
Board delta is an open-source printed circuit board by visionspacetec, from the visionspacetec/VST104-Delta repository on GitHub. It is a 6-layer board of 90.2 × 95.9 mm with 475 parts on 634 nets, routed with 8,497 tracks and 1,141 vias.
It is built around the MCP9804-E/MC, CDBQR40 and CY15B102Q-SXA, with the SP3012-06UTG among its other parts. Its parts include 162 resistors, 146 capacitors, 8 diodes, 6 ICs and 6 transistors. It belongs with the STM32 boards of this library.
Main components
4
MCP9804-E/MC
DFN-8-EP(2x3)-40℃~+125℃ 12bit 2.7V~5.5V 250ms I2C、SMBus ±0.25℃ DFN-8-EP(2x3) Temperature Sensors ROHSMicrochip TechnologyTemperature SensorsCDBQR40
SOD-923F1V@40mA 200mA 200nA@30V 40V SOD-923F Schottky Diodes ROHSComchipSchottky Diodes
CY15B102Q-SXA
SOIC-8-40℃~+85℃ 100,000,000,000,000 Cycles 151 years 250uA 2Mbit 2V~3.6V 3mA 40MHz 8uA Operating status indication SPI SOIC-8 FRAM ROHSInfineon TechnologiesFRAM
SP3012-06UTG
UDFN-14(1.3x3.5)-40℃~+125℃ 0.5pF 1.5uA 4A@8/20us 5V 6 8.4V ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional UDFN-14(1.3x3.5) ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
README
README.mdVST104 Board Delta - double MCU OBC for PC104
This repository contains the KiCad project and other documents created during the development of Board Delta under VST104 project. This PC104 CubeSats module is a double redundant onboard computer accomodating all of the features of the Board Siera together with dual redundancy.
Fig 1. Board Delta OBC module 3D visualisation top (left) and bottom (right) side.
Specifications
This double onboard computer PC104 module implements Board Sierra in full dual redundancy. The original Sierra module was extended with its own mirrored copy resulting in two independent OBCs. Both of them share almost the same layout. Only small changes in tracing around the main header and flip of debug & program connector were required. Thanks to this approach, no software changes of the two OBCs are necessary, and both OBCs share very similar electrical characteristics. There is no tracing placed in the middle-top part of the board, just under the "VST104 Delta" marking. This provides enough space for the implementation of killing/switching logic between the OBCs.
For more specifications check Board Sierra repository.
Fig 2. PC104 header pinout supported by this OBC module.
Debug & Program connector
Two separate 2x4 female format connectors on both boards sides are used for debugging and programming. SWI and UART5 interfaces of the boarded STM32 microprocessor are wired to this connector, as shown in figure 3. This interface is fully compatible with STM ST-Link family programmers.
Fig 3. Pinout of the debug and program connector for both OBCs.
Parts
475| Qty | Value | Footprint | References |
|---|---|---|---|
| 70 | 100n | VST104_footprints:C_SMD_0402 | C1, C10, C11, C100, C105, C106, C109, C110, C111, C112, C113, C114, C115, C116, C117, C118 +54 |
| 48 | 100k | VST104_footprints:R_SMD_0402 | R1, R10, R11, R100, R101, R102, R103, R106, R107, R114, R115, R116, R117, R129, R130, R134 +32 |
| 36 | test_point | VST104_footprints:scope_PAD_1mm | TP1, TP2, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP19, TP20, TP21, TP22, TP23, TP24, TP25 +20 |
| 34 | 22 | VST104_footprints:R_SMD_0402 | R12, R13, R41, R42, R43, R44, R122, R123, R124, R125, R126, R127, R150, R151, R152, R153 +18 |
| 30 | 10n | VST104_footprints:C_SMD_0402 | C3, C22, C23, C24, C25, C29, C30, C102, C103, C104, C107, C108, C120, C121, C126, C127 +14 |
| 30 | DGQ2788A | VST104_footprints:mini_QFN-16-1.8x2.6mm | AS1, AS2, AS10, AS11, AS12, AS13, AS14, AS15, AS16, AS17, AS18, AS19, AS20, AS21, AS22, AS23 +14 |
| 24 | 10k | VST104_footprints:R_SMD_0402 | R23, R24, R27, R28, R104, R105, R108, R109, R110, R111, R112, R113, R148, R149, R154, R155 +8 |
| 14 | MCP9804 | VST104_footprints:DFN-8_3.0x2.0mm_EP | TS1, TS2, TS3, TS4, TS5, TS6, TS7, TS8, TS9, TS10, TS11, TS12, TS13, TS14 |
| 12 | trace_0.2mm | VST104_footprints:trace_arc_0.2mm | TRC4, TRC5, TRC6, TRC7, TRC8, TRC9, TRC13, TRC14, TRC15, TRC16, TRC17, TRC18 |
| 8 | 100p | VST104_footprints:C_SMD_0402 | C68, C69, C72, C73, C141, C142, C145, C146 |
| 8 | 1u | VST104_footprints:C_SMD_0603 | C2, C17, C70, C71, C75, C90, C143, C144 |
| 8 | 4k7 | VST104_footprints:R_SMD_0402 | R37, R38, R39, R40, R118, R119, R120, R121 |
| 8 | 60.4 | VST104_footprints:R_SMD_0402 | R77, R78, R79, R80, R158, R159, R160, R161 |
| 6 | 1n | VST104_footprints:C_SMD_0402 | C28, C66, C67, C101, C139, C140 |
| 6 | 280k | VST104_footprints:R_SMD_0402 | R47, R50, R54, R128, R131, R135 |
| 6 | CDBQR40 | VST104_footprints:D_SMD_0402 | D1, D2, D3, D5, D6, D7 |
| 6 | CY15B102Q | VST104_footprints:SOIC-8_208_5.23x5.23mm | M4, M5, M6, M10, M11, M12 |
| 6 | S25FL256L | VST104_footprints:WSON-8_6.0x8.0mm_EP | M1, M2, M3, M7, M8, M9 |
| 6 | TPS22965-Q1 | VST104_footprints:WSON-8_2.0x2.0mm_EPV | Q1, Q2, Q3, Q4, Q5, Q6 |
| 5 | trace_0.173mm | VST104_footprints:trace_arc_0.173mm | TRC1, TRC2, TRC3, TRC10, TRC11 |
| 4 | 100u | VST104_footprints:C_SMD_1210 | C56, C57, C129, C130 |
| 4 | 10u | VST104_footprints:C_SMD_0805 | C15, C26, C88, C99 |
| 4 | 110k | VST104_footprints:R_SMD_0402 | R63, R65, R144, R146 |
| 4 | 120 @ 100M | VST104_footprints:R_SMD_0402 | FB1, FB2, FB3, FB4 |
| 4 | 17p | VST104_footprints:C_SMD_0402 | C49, C50, C122, C123 |
| 4 | 33k2 | VST104_footprints:R_SMD_0402 | R61, R62, R142, R143 |
| 4 | 4n7 | VST104_footprints:C_SMD_0402 | C64, C65, C137, C138 |
| 4 | 4u7 | VST104_footprints:C_SMD_0603 | C19, C21, C92, C94 |
| 4 | 75k | VST104_footprints:R_SMD_0402 | R59, R60, R140, R141 |
| 4 | GND | VST104_footprints:scope_GND | TP17, TP18, TP37, TP38 |
| 4 | MountingHole_Pad | VST104_footprints:MountingHole_3.2mm_M3_Pad_Via | MH1, MH2, MH3, MH4 |
| 4 | TCAN1051-Q1 | VST104_footprints:VSON-8_3.0x3.0mm_EPV | U2, U3, U5, U6 |
| 4 | TPS25940-Q1 | VST104_footprints:WQFN-20_4.0x3.0mm_EPV | EF1, EF2, EF3, EF4 |
| 2 | 100 0.25W | VST104_footprints:R_SMD_0603 | R58, R139 |
| 2 | 10u | VST104_footprints:L_SMD_0402 | L1, L2 |
| 2 | 115k | VST104_footprints:R_SMD_0402 | R52, R133 |
| 2 | 15n | VST104_footprints:C_SMD_0402 | C52, C125 |
| 2 | 1k | VST104_footprints:R_SMD_0402 | R57, R138 |
| 2 | 22k6 | VST104_footprints:R_SMD_0402 | R51, R132 |
| 2 | 22n | VST104_footprints:C_SMD_0402 | C51, C124 |
| 2 | 31k6 | VST104_footprints:R_SMD_0402 | R66, R147 |
| 2 | 330 | VST104_footprints:R_SMD_0402 | R81, R162 |
| 2 | 47k | VST104_footprints:R_SMD_0402 | R75, R156 |
| 2 | 56k | VST104_footprints:R_SMD_0402 | R76, R157 |
| 2 | 60k4 | VST104_footprints:R_SMD_0402 | R64, R145 |
| 2 | 63k4 | VST104_footprints:R_SMD_0402 | R56, R137 |
| 2 | 74LVC1G11-Q100 | VST104_footprints:SOT-363_TSSOP-6_2.0x1.25mm | LG1, LG2 |
| 2 | 8k66 | VST104_footprints:R_SMD_0402 | R55, R136 |
| 2 | ABS07AIG | VST104_footprints:LSE_3.2x1.5mm | Y1, Y3 |
| 2 | BZT52C3V3TQ-7-F | VST104_footprints:D_SOD-523_1.2x0.8mm | D4, D8 |
| 2 | Conn_02x12_Counter_Clockwise | VST104_footprints:PC104_SO-24_universal | UA2, UA3 |
| 2 | Conn_02x26_Odd_Even | VST104_footprints:ESQ-126-39-x-D | H1, H2 |
| 2 | R_Small | VST104_footprints:R_SMD_1206 | F1, F2 |
| 2 | SP3012-06 | VST104_footprints:uDFN-14_3.5x1.35mm | ESD1, ESD2 |
| 2 | STM32L496ZGTx | VST104_footprints:LQFP-144_20x20mm_P0.5mm | U1, U4 |
| 2 | SW&UART | VST104_footprints:CLP-104-02-x-D | JC1, JC2 |
| 2 | SiT8924 | VST104_footprints:HSE_2.0x1.6mm | Y2, Y4 |
| 1 | Conn_01x03 | VST104_footprints:PC104_universal_FPGA | UA1 |
| 1 | LOGO | VST104_logos:OSH_logo_9mm | LOGO3 |
| 1 | logo | VST104_logos:VST_logo_horizontal_700 | LOGO1 |
| 1 | logo | VST104_logos:LibreCube_logo_22.4mm | LOGO2 |
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Questions
How big is the Board delta PCB?
It measures 90.2 × 95.9 mm and has 6 copper layers, 1.57 mm thick.
What parts does the Board delta use?
475 parts, built around the MCP9804-E/MC, CDBQR40, CY15B102Q-SXA and SP3012-06UTG. 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 Board delta KiCad files?
From the visionspacetec/VST104-Delta repository on GitHub, at the commit this page was made from: the board is board_delta.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Board delta design in my own project?
Its repository states no licence, so its author keeps all rights: ask visionspacetec before reusing the design.