PicoCAN

AdrianR3·PicoCAN·KiCAD/PicoCAN.kicad_pcb

About the PicoCAN PCB

PicoCAN is an open source RP2040/RP2350 PCB design by AdrianR3, published on GitHub. It is a 2-layer board measuring 21 × 51.5 mm, with 51 components from 26 distinct parts.

Its main chip is the C2040, from the RP2040/RP2350 family. Other key parts include the C39051, C2843335 and MCP25625X-X-ML. By type, the board carries 22 capacitors, 12 resistors, 6 connectors, 4 ICs, 4 diodes and 2 crystals.

It belongs with the rf & radio and dev boards & breakouts designs in this gallery.

From the project

RP2040 based dev board w/built-in CAN controller and transceiver

To interface with the CAN bus, you can use any library that supports the MCP25625. There are a few examples that use the MCPCAN library in the ./firmwareexamples folder; they are adapted from https://github.com/coryjfowler/MCPCANlib.

This is what JLC PCBA gets you! These don't have the headers soldered on yet. SEE BUILD.md FOR STEPS TAKEN

Exhaustive PCB component BOM available at ./KiCAD/prod/PicoCAN.csv.

PicoCAN, from the project README — From the project README

Main components on the PicoCAN

C2040 C39051 C2843335 MCP25625X-X-ML

PicoCAN bill of materials (BOM)

51 components, 26 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	C2040 RP2040	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U1
1	C39051 MCP1700x-330xxTT	SOT-23	U2
1	C2843335 W25Q16JVUXIQ	Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm	U3
1	MCP25625X-X-ML MCP25625x-x-ML	QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm	U4
1	C9002 12 MHz Crystal_GND24 (C9002)	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	C13738 16 MHz Crystal_GND24 (C13738)	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y2
1	C165948 USB_C_Receptacle_USB2.0_14P	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
2	CONN_01X20 Conn_01x20	PinHeader_1x20_P2.54mm_Vertical	J2, J3
2	CONN_01X02 Conn_01x02	PinHeader_1x02_P2.54mm_Vertical	J4, J7
1	C3817776 Screw_Terminal_01x03 (C3817776)	CONN-TH_3P-P3.50_OSTTE030161	J5
1	C720477 SW_Push	SW-SMD_L3.9-W3.0-P4.45	SW1
1	C2286	LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D1
1	C2994781	LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D2
2	C223608 MBR120VLSFT1G	D_SOD-123F	D3, D4
2	C52923 1 µF	C_0402_1005Metric	C1, C10
14	C1525 100 nF	C_0402_1005Metric	C2, C3, C4, C5, C6, C7, C8, C9 +6
2	C96446 10 µF	C_0603_1608Metric	C13, C14
2	C1562 33 pF	C_0402_1005Metric	C15, C16
2	C1578 8 pF	C_0402_1005Metric	C18, C19
2	C25905 5.1K	R_0402_1005Metric	R1, R2

Show 6 more

Qty	Part	Footprint	Refs
2	C25100 27R	R_0402_1005Metric	R3, R4
2	C11702 1K	R_0402_1005Metric	R5, R7
3	C25744 10K	R_0402_1005Metric	R6, R11, R12
1	C25117 470R	R_0402_1005Metric	R8
1	C25076 100R	R_0402_1005Metric	R9
1	C25079 120R	R_0402_1005Metric	R10

PicoCAN design files

The KiCad project lives in the AdrianR3/PicoCAN repository on GitHub; these links point at the commit this page was built from.

PicoCAN: common questions

What microcontroller does the PicoCAN use?

The PicoCAN is built around the C2040, from the RP2040/RP2350 family.

How big is the PicoCAN PCB?

The PicoCAN measures 21 × 51.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PicoCAN?

51 components, from 26 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 PicoCAN design files?

From the AdrianR3/PicoCAN 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 PicoCAN design in my own project?

The repository has no license, so all rights stay with AdrianR3. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the PicoCAN without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.