Sipm
About the Sipm PCB
Sipm is an open source STM32 PCB design by npgo22, published on GitHub. It is a 4-layer board measuring 45 × 45 mm, with 67 components from 33 distinct parts.
Its main chip is the STM32F103C8Tx, from the STM32 family. Other key parts include the MICROFC-30035, AP3012, LT1807 and AP2112K-3.3. By type, the board carries 25 capacitors, 19 resistors, 7 diodes, 5 ICs, 5 connectors and 1 transistor.
Main components on the Sipm
Sipm bill of materials (BOM)
67 components, 33 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MICROFC-30035 | XDCR_MICROFC-30035-SMT-TR1 | U1 |
| 1 | AP3012 | SOT-23-5 | U2 |
| 1 | LT1807 | SOIC-8 | U3 |
| 1 | STM32F103C8Tx | LQFP-48_7x7mm_P0.5mm | U4 |
| 1 | AP2112K-3.3 | SOT-23-5 | U5 |
| 1 | SI2371EDS Si2371EDS | SOT-23 | Q1 |
| 1 | 729-FL2500279Z JWT CF4025M00010 | 3225-4P | Y1 |
| 1 | CONN_01X02_PIN Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Right | J1 |
| 1 | USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2 |
| 1 | Conn_02x05_Counter_Clockwise | PinHeader_2x05_P2.54mm_Vertical_SMD | J5 |
| 1 | Conn_01x03_Pin | PinHeader_1x03_P2.54mm_Vertical_SMD_Pin1Right | J6 |
| 1 | Conn_02x08_Top_Bottom | PinHeader_2x08_P2.54mm_Vertical_SMD | J7 |
| 1 | 500MA 500mA | F0805 | F1 |
| 1 | 100K 100k | Potentiometer_Vishay_TS53YL_Vertical | RV1 |
| 1 | SW_MEC_5E | SKRPANE010 | SW1 |
| 4 | 645-599-1090-147F LED_Small | LED_0603 | D1, D2, D4, D7 |
| 1 | 1N5819WS | D_SOD-123F | D3 |
| 2 | MBR0540 | D_SOD-123 | D5, D6 |
| 1 | 78-SI2371EDS-T1-BE3 SUMIDA CDTH3D14 | SUMIDA CDTH3D14 | L1 |
| 8 | 100NF 100nF | C_0603 | C1, C2, C3, C4, C5, C16, C18, C25 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 8 | 22UF 22uF | C_0805 | C6, C7, C8, C9, C10, C11, C12, C15 |
| 3 | 10PF 10pF | C_0603 | C13, C14, C19 |
| 1 | 47UF 47uF | CP_Elec_6.3x5.7 | C17 |
| 1 | 20NF 20nF | C_0603 | C23 |
| 4 | 10NF 10nF | C_0603 | C24, C26, C27, C28 |
| 7 | 10K 10k | R_0603 | R1, R2, R3, R9, R14, R15, R18 |
| 2 | 5.1K 5.1k | R_0603 | R4, R5 |
| 3 | 1.5K 1.5k | R_0603 | R6, R7, R8 |
| 2 | 150K 150k | R_0603 | R10, R11 |
| 1 | 1k | R_0603 | R12 |
| 1 | 249R | R_0603 | R13 |
| 2 | 100K 100k | R_0603 | R16, R17 |
| 1 | 49.9R | R_0603 | R19 |
Sipm design files
The KiCad project lives in the npgo22/sipm repository on GitHub; these links point at the commit this page was built from.
- Layoutsipm.kicad_pcb
- Schematicsipm.kicad_sch
- BOMsipm.csv
Sipm: common questions
What microcontroller does the Sipm use?
The Sipm is built around the STM32F103C8Tx, from the STM32 family.
How big is the Sipm PCB?
The Sipm measures 45 × 45 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Sipm?
67 components, from 33 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 Sipm design files?
From the npgo22/sipm 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 Sipm design in my own project?
The repository has no license, so all rights stay with npgo22. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Sipm 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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