CAN
About the CAN PCB
CAN is an open source STM32 PCB design by cshieldsce, published on GitHub. It is a 2-layer board measuring 98.7 × 22.5 mm, with 60 components from 29 distinct parts.
Its main chip is the STM32G474RETx, from the STM32 family. Other key parts include the LDO, USB ESD and Isolated transceiver. By type, the board carries 28 capacitors, 9 resistors, 7 inductors, 6 diodes, 4 ICs and 3 connectors.
From the project
This folder contains a KiCad project for a CAN-focused board.
This folder contains a KiCad project for a CAN-focused board.
- PDF: docs/CANKiCad.pdf - Gerbers: gerber/`
Main components on the CAN
CAN bill of materials (BOM)
60 components, 29 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G474RETx | LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | LDO | SOT-23-5 | U2 |
| 1 | USB ESD | SOT-23-6 | U3 |
| 1 | Isolated transceiver | XCVR_ISOW1044BDFMR | U4 |
| 1 | ABM8-24MHz | XTAL_ABM8-24.000MHZ-B2-T | Y1 |
| 1 | Conn_SWD | PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | DB9 Connector | AMPHENOL_L77SDE09SA4CH4F | J2 |
| 1 | USB-C receptacle | GCT_USB4105-GF-A | J4 |
| 1 | VBUS polyfuse | FUSM4632X85 | F1 |
| 1 | BT_RESET | SW_PTS525SM15SMTR2LFS | S1 |
| 1 | VBUS TVS clamp | D_SMA | D1 |
| 1 | LED_USB | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | LED_CAN | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | LED_ERR | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D6 |
| 1 | LED_PWR | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D7 |
| 1 | CAN-FD ESD/TVS | SOT95P237X112-3N | D8 |
| 1 | 120R | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 5 | 470R | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB2, FB3, FB4, FB5, FB6 |
| 1 | Common-mode choke | WE-SL5_HC | L1 |
| 10 | 100n | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2, C3, C4, C13, C14, C16, C17 +2 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C12, C15, C23, C25, C26 |
| 4 | 10n | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6, C20, C21, C28 |
| 5 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7, C8, C11, C19, C22 |
| 2 | 22p | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C9, C10 |
| 1 | 4.7n | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C27 |
| 4 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R4, R7, R11 |
| 2 | 5.1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R3 |
| 1 | 1M | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R5 |
| 2 | 60.4R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R10 |
CAN design files
The KiCad project lives in the cshieldsce/ENCE_3231_Charlie_Shields_2026 repository on GitHub; these links point at the commit this page was built from.
CAN: common questions
What microcontroller does the CAN use?
The CAN is built around the STM32G474RETx, from the STM32 family.
How big is the CAN PCB?
The CAN measures 98.7 × 22.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CAN?
60 components, from 29 distinct parts. The full bill of materials is listed on this page.
Where can I download the CAN design files?
From the cshieldsce/ENCE_3231_Charlie_Shields_2026 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the CAN design in my own project?
The repository has no license, so all rights stay with cshieldsce. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the CAN 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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