4-Layer
About the 4-Layer PCB
4-Layer is an open source STM32 PCB design by Sohiththarun, published on GitHub. It is a 4-layer board measuring 59.5 × 58.6 mm, with 46 components from 35 distinct parts.
Its main chip is the STM32F405RGT6, from the STM32 family. Other key parts include the USBLC6-2SC6. By type, the board carries 16 capacitors, 11 resistors, 5 connectors, 4 diodes, 3 inductors and 2 ICs.
Main components on the 4-Layer
4-Layer bill of materials (BOM)
46 components, 35 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F405RGT6 | LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U2 |
| 1 | AO3401A | SOT-23 | Q1 |
| 1 | 16MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J1 |
| 1 | SWD | PinHeader_2x05_P1.27mm_Vertical_SMD | J2 |
| 2 | Conn_01x04 | Molex_PicoBlade_53048-0410_1x04_P1.25mm_Horizontal | J3, J4 |
| 1 | USB_B_Micro | USB_Micro-B_GCT_USB3076-30-A | J5 |
| 1 | 250mA | Fuse_1206_3216Metric | F1 |
| 1 | ~ | SOT-23-6 | MP2359DJ-LF-Z1 |
| 1 | SW_SPDT | SW_SPDT_PCM12 | SW1 |
| 1 | BLUE | LED_0603_1608Metric | D1 |
| 2 | B5819W | D_SOD-123 | D2, D3 |
| 1 | RED | LED_0603_1608Metric | D4 |
| 1 | 600 @ 600MHz | L_0805_2012Metric | FB1 |
| 1 | 39n | L_0402_1005Metric | L1 |
| 1 | 10u | L_TracoPower_TCK-047_5.2x5.8mm | L2 |
| 2 | 2u2 | C_0603_1608Metric | C1, C2 |
| 1 | 4u7 | C_0603_1608Metric | C3 |
| 5 | 100n | C_0402_1005Metric | C4, C5, C6, C7, C8 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1u | C_0402_1005Metric | C9 |
| 1 | 10n | C_0402_1005Metric | C10 |
| 2 | 12p | C_0402_1005Metric | C11, C12 |
| 3 | 10u | C_1206_3216Metric | C13, C15, C17 |
| 1 | 10n | C_0603_1608Metric | C14 |
| 1 | 10k | R_0402_1005Metric | R1 |
| 1 | 47 | R_0402_1005Metric | R2 |
| 1 | 1k5 | R_0603_1608Metric | R3 |
| 1 | 100k | R_0603_1608Metric | R4 |
| 1 | 68k | R_0603_1608Metric | R5 |
| 1 | 47k | R_0603_1608Metric | R6 |
| 1 | 15k | R_0603_1608Metric | R7 |
| 1 | 270 | R_0603_1608Metric | R8 |
| 2 | 2k2 | R_0402_1005Metric | R9, R10 |
| 1 | 1k | R_0603_1608Metric | R11 |
4-Layer design files
The KiCad project lives in the Sohiththarun/4-Layer-PCB repository on GitHub; these links point at the commit this page was built from.
- LayoutSTM32F4_test1.kicad_pcb
- SchematicSTM32F4_test1.kicad_sch
4-Layer: common questions
What microcontroller does the 4-Layer use?
The 4-Layer is built around the STM32F405RGT6, from the STM32 family.
How big is the 4-Layer PCB?
The 4-Layer measures 59.5 × 58.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the 4-Layer?
46 components, from 35 distinct parts. The full bill of materials is listed on this page.
Where can I download the 4-Layer design files?
From the Sohiththarun/4-Layer-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 4-Layer design in my own project?
The repository has no license, so all rights stay with Sohiththarun. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the 4-Layer 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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