Zero r2

mean00·swindle·kicad/rp2040_zero/rev2/zero_r2.kicad_pcb

About the Zero r2 PCB

Zero r2 is an open source RP2040/RP2350 PCB design by mean00, published on GitHub. It is a 2-layer board measuring 41.8 × 30.2 mm, with 18 components from 15 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the 3V->VTREF, VTREF->3V, VTREF<->3V and RT9013-33GB. By type, the board carries 5 ICs, 5 capacitors, 4 connectors, 3 resistors and 1 transistor.

It belongs with the usb & debug tools designs in this gallery, and the repository also holds 2 earlier revisions of it.

From the project

A custom version of the blackMagic probe with rust in it

Pick the pre-built firmware for your board or build from source.

'see wiki for exact pinout' ### 3. Start debugging

Or use any GDB frontend (VS Code, CLion, etc.) — just point it to the serial port.

This project uses CMake with presets for each target platform.

There is a devpod/docker build environment included.

- CMake ≥ 3.21 - ARM GCC toolchain (arm-none-eabi-gcc) or LLVM/Clang - RISC-V toolchain (for CH32V targets) - Rust toolchain (for the GDB interface)

Zero r2, from the project README — From the project README

Main components on the Zero r2

RP2040-Zero3V->VTREFVTREF->3VVTREF<->3VRT9013-33GB

Zero r2 bill of materials (BOM)

18 components, 15 distinct parts.

Qty	Part	Footprint	Refs
1	RP2040-Zero	RP2040 Zero	U1
1	3V->VTREF	TSSOP-8_3x3mm_P0.65mm	U3
1	VTREF->3V	TSSOP-8_3x3mm_P0.65mm	U4
1	VTREF<->3V	TSSOP-8_3x3mm_P0.65mm	U5
1	RT9013-33GB	SOT-23-5_HandSoldering	U6
1	DMG2302U	SOT-23	Q1
1	jtag	PinHeader_2x05_P1.27mm_Vertical_SMD	J1
1	Conn_01x03_Socket	PinHeader_1x03_P2.54mm_Vertical	J2
1	Debug port	PinHeader_1x05_P1.00mm_Vertical	J3
1	Debug port	JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical	J5
4	100n	R_0603_1608Metric	C1, C3, C10, C11
1	47u	R_1210_3225Metric	C2
1	10k	R_0603_1608Metric	R1
1	1k	R_0603_1608Metric	R2
1	330	R_0603_1608Metric	R3

Zero r2 design files

The KiCad project lives in the mean00/swindle repository on GitHub; these links point at the commit this page was built from.

Layoutkicad/rp2040_zero/rev2/zero_r2.kicad_pcb
Schematickicad/rp2040_zero/rev2/zero_r2.kicad_sch

Zero r2: common questions

What microcontroller does the Zero r2 use?

The Zero r2 is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the Zero r2 PCB?

The Zero r2 measures 41.8 × 30.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Zero r2?

18 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Zero r2 design files?

From the mean00/swindle repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Zero r2 design in my own project?

The repository has no license, so all rights stay with mean00. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Zero r2 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.