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Rp2350b rm2-reference

eelstretching·rp2350b-rm2-reference

Rp2350b rm2-reference PCB layout, top view — open source RP2040/RP2350 board by eelstretching

About the Rp2350b rm2-reference PCB

Rp2350b rm2-reference is an open source RP2040/RP2350 PCB design by eelstretching, published on GitHub. It is a 2-layer board measuring 52 × 89.5 mm, with 53 components from 30 distinct parts.

Its main chip is the RP2350B, from the RP2040/RP2350 family. Other key parts include the NCP1117ST33T3G, W25Q128JVSIQ, APS6404L-3SQR-SN and RM2. By type, the board carries 25 capacitors, 14 resistors, 5 ICs, 3 connectors, 2 switches and 2 diodes.

It belongs with the iot & wireless designs in this gallery.

From the project

Raspberry Pi's RP2350B minimal design (RPI-RP2350B-MINIMAL R4-S1, KiCad 10) with these additions:

Raspberry Pi's RP2350B minimal design (RPI-RP2350B-MINIMAL R4-S1, KiCad 10) with these additions:

- the RM2 Wi-Fi/Bluetooth module (CYW43439) on GPIO 43-46 - the 8 MB APS6404L PSRAM fitted on the second QSPI chip select, moved from GPIO0 to GPIO47 - single-row headers: J2/J3 are 1x29 / 1x28 rows with the GPIOs in order and 3V3 and GND pins at both ends, in place of Pi's 2x26 headers with an all-GND outer row. That makes the board easy to use on perfboard, with 3.3 V on hand for level shifters and the like - a 5 V input (VSYS) on J3 pin 2, so the board can run without USB. As on a Pico, USB…

Rp2350b rm2-reference, from the project README
From the project README

Main components on the Rp2350b rm2-reference

RP2350BNCP1117ST33T3GW25Q128JVSIQAPS6404L-3SQR-SNRM2

Rp2350b rm2-reference bill of materials (BOM)

53 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2350B
U1
1
NCP1117ST33T3G
U2
1
W25Q128JVSIQ
U3
1
APS6404L-3SQR-SN
U4
1
RM2
U5
1
ABM8-272-T3
12MHz
X1
1
10103594-0001LF
J1
1
CONN_01X29
Conn_01x29
J2
1
CONN_01X28
Conn_01x28
J3
2
434133025816
SW1, SW2
1
19-217/GHC-YR1S2/3T
Green
D1
1
B5819W
D2
1
AOTA-B201610S3R3-101-T
3.3u
L1
3
CL21A106KAYNNNE
10u
C1, C5, C19
14
CL05B104KO5NNNC
100n
C2, C8, C10, C11, C12, C13, C14, C15 +6
2
0402CG150J500NT
15p
C3, C4
2
CL05A475MP5NRNC
4.7u
C6, C7
1
CL05A475MP5NRNC
4.7u
C9
1
CL21A106KAYNNNE
10u
C23
2
CL05B104KO5NNNC
100n
C24, C25
Show 10 more
QtyPartRefs
1
10k
R1
3
0402WGF1001TCE
1k
R2, R4, R6
1
0402WGF330JTCE
33
R3
2
0402WGF270JTCE
27
R7, R8
1
0
R9
2
0402WGF0000TCE
0
R10, R11
1
0402WGF1002TCE
10k
R13
1
0402WGF4700TCE
470
R14
1
0402WGF1002TCE
10k
R15
1
0402WGF1001TCE
1k
R16

Rp2350b rm2-reference design files

The KiCad project lives in the eelstretching/rp2350b-rm2-reference repository on GitHub; these links point at the commit this page was built from.

Rp2350b rm2-reference: common questions

What microcontroller does the Rp2350b rm2-reference use?

The Rp2350b rm2-reference is built around the RP2350B, from the RP2040/RP2350 family.

How big is the Rp2350b rm2-reference PCB?

The Rp2350b rm2-reference measures 52 × 89.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Rp2350b rm2-reference?

53 components, from 30 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 Rp2350b rm2-reference design files?

From the eelstretching/rp2350b-rm2-reference 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 Rp2350b rm2-reference design in my own project?

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

Can I test firmware for the Rp2350b rm2-reference 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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