HardLabs

CM2040

Yarnemeuris·CM2040·PCBs/CM2040/CM2040.kicad_pcb

CM2040 PCB layout, top view — open source RP2040/RP2350 board by Yarnemeuris

About the CM2040 PCB

CM2040 is an open source RP2040/RP2350 PCB design by Yarnemeuris, published on GitHub. It is a 2-layer board measuring 40 × 30 mm, with 23 components from 10 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q64JVSS and C52125332. By type, the board carries 14 capacitors, 5 resistors, 3 ICs and 1 crystal.

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

From the project

A small board to easily connect an rp2040 to any project.

The CM2040 is a small board with an rp2040 on it. It can be used to add an MCU to any project, without being difficult to add. Compared to regular devboards, the CM2040 still gives you access to every signal. So you can add you own usb port and use all the GPIO pins. The storage is also on board. This means that you can use a dedicated programmer and then move the CM2040 to it's use location.

CM2040, from the project README
From the project README

Main components on the CM2040

RP2040W25Q64JVSSC52125332

CM2040 bill of materials (BOM)

23 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
W25Q64JVSS
U2
1
C52125332
~
U3
1
ABM8-272-T3
Y1
10
100NF
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +2
2
C14445
1µF
C11, C12
2
15PF
15pF
C13, C14
2
10kΩ
R1, R6
1
1kΩ
R3
2
27.4Ω
R4, R5

CM2040 design files

The KiCad project lives in the Yarnemeuris/CM2040 repository on GitHub; these links point at the commit this page was built from.

CM2040: common questions

What microcontroller does the CM2040 use?

The CM2040 is built around the RP2040, from the RP2040/RP2350 family.

How big is the CM2040 PCB?

The CM2040 measures 40 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CM2040?

23 components, from 10 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 CM2040 design files?

From the Yarnemeuris/CM2040 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 CM2040 design in my own project?

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

Can I test firmware for the CM2040 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.

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