Stigma core board
About the Stigma core board
Stigma core board is an open source STM32 PCB design by tudsat-rocket, published on GitHub. It is a 4-layer board measuring 40 × 40 mm, with 85 components from 38 distinct parts.
Its main chip is the STM32H743VIT6, from the STM32 family. Other key parts include the TPD4E1U06, LPS22, ICM-42670-P, AZ1117I-3.3 and ICM-42688-P. By type, the board carries 40 capacitors, 20 resistors, 13 ICs, 4 diodes, 3 connectors and 2 crystals.
From the project
core board and mission board for a new flight computer
the core- and mission board for our new flight computer
Main components on the Stigma core board
Stigma core board bill of materials (BOM)
85 components, 38 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32H743VIT6 | LQFP-100_14x14mm_P0.5mm | U1 |
| 2 | TPD4E1U06 | SOT-563 | U2, U7 |
| 1 | LPS22 | ST_HLGA-10_2x2mm_P0.5mm_LayoutBorder3x2y | U3 |
| 1 | ICM-42670-P | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U4 |
| 1 | AZ1117I-3.3 Diodes Incorporated | SOT-223-3_TabPin2 | U5 |
| 1 | ICM-42688-P STMicroelectronics | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U6 |
| 1 | W25Q256JVEIQ | WSON-8-1EP_8x6mm_P1.27mm_EP3.4x4.3mm | U8 |
| 1 | LSM6DSR STMicroelectronics | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U9 |
| 1 | H3LIS331DL STMicroelectronics | LGA-16_3x3mm_P0.5mm_LayoutBorder3x5y | U10 |
| 1 | MS5607/MS5611 TE Connectivity Measurement Specialties | LGA-8_3x5mm_P1.25mm | U11 |
| 1 | LIS3MDL STMicroelectronics | LGA-12_2x2mm_P0.5mm | U12 |
| 1 | BMP580 | ST_HLGA-10_2x2mm_P0.5mm_LayoutBorder3x2y | U13 |
| 1 | 25MHZ 25MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 32.768KHZ 32.768kHz | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | TC2050 | Tag-Connect_TC2050-IDC-FP_2x05_P1.27mm_Vertical | J1 |
| 1 | CONN PLUG 70POS SMD GOLD | DF40GB-70DP-0.4V-plug | J3 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 Shenzhen Kinghelm Elec | USB_C_Receptacle_Palconn_UTC16-G | J5 |
| 2 | KMR721NGLFS C&K | SW_Push_1P1T_NO_CK_KMR2 | SW1, SW2 |
| 1 | C2286 red | LED_0603_1608Metric | D1 |
| 1 | C72038 yellow | LED_0603_1608Metric | D2 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C965804 green | LED_0603_1608Metric | D3 |
| 1 | C8598 ~ Nexperia | D_SOD-123 | D4 |
| 1 | C1002 FerriteBead_Small | R_0603_1608Metric | FB1 |
| 1 | 4U7 4u7 | C_0603_1608Metric | C1 |
| 5 | 1u Samsung Electro-Mechanics | C_0402_1005Metric | C2, C8, C26, C33, C37 |
| 23 | 100N 100n Samsung Electro-Mechanics | C_0402_1005Metric | C3, C4, C5, C6, C7, C15, C16, C17 +15 |
| 2 | 2U2 2u2 | C_0402_1005Metric | C9, C10 |
| 4 | 10P 10p | C_0402_1005Metric | C11, C12, C13, C14 |
| 2 | 10U 10u Samsung Electro-Mechanics | C_0603_1608Metric | C18, C23 |
| 1 | 22U 22u Samsung Electro-Mechanics | C_0603_1608Metric | C19 |
| 2 | 10N 10n Samsung Electro-Mechanics | C_0402_1005Metric | C32, C38 |
| 4 | 0 | R_0402_1005Metric | R1, R2, R3, R4 |
| 1 | 100K 100k YAGEO | R_0402_1005Metric | R5 |
| 4 | 1k | R_0402_1005Metric | R6, R7, R8, R9 |
| 2 | 5K1 5k1 YAGEO | R_0402_1005Metric | R10, R11 |
| 7 | 22 YAGEO | R_0402_1005Metric | R12, R13, R16, R17, R18, R19, R20 |
| 1 | 4K7 4k7 YAGEO | R_0402_1005Metric | R14 |
| 1 | 10K 10k YAGEO | R_0402_1005Metric | R15 |
Stigma core board design files
The KiCad project lives in the tudsat-rocket/stigma repository on GitHub; these links point at the commit this page was built from.
Stigma core board: common questions
What microcontroller does the Stigma core board use?
The Stigma core board is built around the STM32H743VIT6, from the STM32 family.
How big is the Stigma core board?
The Stigma core board measures 40 × 40 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the Stigma core board?
85 components, from 38 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 Stigma core board design files?
From the tudsat-rocket/stigma 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 Stigma core board design in my own project?
The repository has no license, so all rights stay with tudsat-rocket. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Stigma core 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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