Aux board
About the Aux board
Aux board is an open source STM32 PCB design by MatthiasGeorgImhof, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 80 × 80 mm, with 121 components from 45 distinct parts.
Its main chip is the STM32L496RGT6, from the STM32 family. Other key parts include the TCAN3414DRBR, FT230XS-R and TPS631000DRLR. By type, the board carries 44 capacitors, 30 resistors, 16 diodes, 12 connectors, 9 ICs and 6 inductors.
It belongs with the science & space designs in this gallery.
From the project
Hardware design files for Cubesat PCBs
The auxilliary board provides desktop connectivity and power for the cubesat modules
- STM32L496 - 2x CAN buses - 3x USB - 3.3V and unregulated power
Main components on the Aux board
Aux board bill of materials (BOM)
121 components, 45 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32L496RGT6 STM | LQFP-64_10x10mm_P0.5mm | U1 |
| 2 | TCAN3414DRBR TCAN3414 TI | VSON-8-1EP_3x3mm_P0.65mm_EP1.65x2.4mm | U2, U3 |
| 2 | FT230XS-R FT230XS FTDI | SSOP-16_3.9x4.9mm_P0.635mm | U4, U5 |
| 4 | TPS631000DRLR TI | TPS631000DRLR_TEX | U6, U7, U8, U9 |
| 1 | ECS-2520MVLC-100-CN-TR 10MHz ECS | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X1 |
| 1 | ECS-327MVATX-2-CN-TR3 32.768KHZ ECS | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X2 |
| 1 | vertical Conn_02x15_Odd_Even generic | PinHeader_2x15_P2.54mm_Vertical | J1 |
| 1 | vertical Conn_02x03_Odd_Even generic | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | vertical Conn_01x02_Pin generic | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | vertical Conn_02x05_Odd_Even generic | PinHeader_2x05_P2.54mm_Vertical | J4 |
| 1 | 10153301-20111LF PC104 Conn_02x20_Odd_Even Amphenol | PinSocket_2x20_P2.54mm_Vertical | J5 |
| 2 | vertical Conn_01x05_Pin generic | PinHeader_1x05_P2.54mm_Vertical | J6, J7 |
| 3 | 10155435-00011LF Amphenol | AMPHENOL_10155435-00011LF | J8, J9, J10 |
| 1 | vertical Conn_01x05_Pin Vertical generic | PinHeader_1x05_P2.54mm_Vertical | J11 |
| 1 | vertical Conn_01x04_Pin Vertical generic | PinHeader_1x04_P2.54mm_Vertical | J12 |
| 2 | EVP-AA602W Panasonic | EVP602AA | SW1, SW2 |
| 4 | CDBA240LL-HF Comchip | D_SMA_Handsoldering | D1, D2, D3, D4 |
| 1 | SMAJ5.0A SMC Diodes | D_SMA_Handsoldering | D5 |
| 2 | NUP2105LT1G onsemi | SOT-23 | D6, D7 |
| 2 | LTST-C191KGKT LED_SMD_GREEN Lite-On | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D8, D10 |
Show 25 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LTST-C191KRKT LED_SMD_RED Lite-On | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D9, D11 |
| 1 | LTST-C191KRKT RED Lite-On | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D12 |
| 1 | LTST-C191KGKT GREEN Lite-On | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D13 |
| 3 | LTST-C191KSKT YELLOW Lite-On | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D14, D15, D16 |
| 2 | BLM18PG121SN1D 120R Murata | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1, FB2 |
| 4 | DFE252012P-1R0M=P2 1uH Murata | L_1008_2520Metric_Pad1.43x2.20mm_HandSolder | L1, L2, L3, L4 |
| 7 | GRM188R61C106MA73D 10uF Murata | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C18, C20, C24, C26 |
| 10 | GRM155R61E104KA87D 100nF Murata | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C4, C5, C6, C7, C8, C9, C19, C21 +2 |
| 4 | GRM1555C1H101JA01D 100p Murata | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C10, C12, C14, C16 |
| 2 | GRM155R61H472KA01D 4n7 Murata | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C11, C15 |
| 5 | GRM155R61E104KA87D 100n Murata | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C13, C17, C30, C31, C32 |
| 4 | GRM1555C1H470JA01D 47pF Murata | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C22, C23, C28, C29 |
| 8 | GRM21BR61A476ME15K 47uF Murata | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C33, C34, C36, C37, C39, C40, C42, C43 |
| 4 | GRM188R61A226ME15D 22uF Murata | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C35, C38, C41, C44 |
| 1 | RC0402FR-07330KL 330K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1 |
| 1 | RC0402FR-07806KL 806K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2 |
| 1 | RC0402FR-07665KL 665K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3 |
| 2 | RC0402FR-07511KL 511K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4, R5 |
| 2 | RC0402FR-07100KL 100K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R6, R25 |
| 4 | RC0805FR-0760R4L 60R4 YAGEO | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R9, R10 |
| 4 | RC0603FR-0727RL 27R YAGEO | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R12, R17, R18 |
| 4 | RC0402FR-071KL 1K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R13, R14, R19, R20 |
| 6 | RC0402FR-075K1L 5K1 YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R15, R16, R21, R22, R23, R24 |
| 4 | RC0402FR-0791KL 91K YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R26, R27, R28, R29 |
| 1 | EXB-2HV102JV 1K Panasonic | R_Array_Convex_8x0602_widepads | RN1 |
Aux board design files
The KiCad project lives in the MatthiasGeorgImhof/Hardware_CSAT repository on GitHub; these links point at the commit this page was built from.
Aux board: common questions
What microcontroller does the Aux board use?
The Aux board is built around the STM32L496RGT6, from the STM32 family.
How big is the Aux board?
The Aux board measures 80 × 80 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Aux board?
121 components, from 45 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Aux board design files?
From the MatthiasGeorgImhof/Hardware_CSAT repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Aux board design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Aux board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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