HardLabs

B311

OS-Q·B311·template/EnvOpenPico.kicad_pcb

B311 PCB layout, top view — open source RP2040/RP2350 board by OS-Q

About the B311 PCB

B311 is an open source RP2040/RP2350 PCB design by OS-Q, published on GitHub. It is a 2-layer board measuring 21.1 × 51.3 mm, with 33 components from 21 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the SPX3819M5-L-3-3. By type, the board carries 14 capacitors, 8 resistors, 4 connectors, 2 ICs, 2 diodes and 1 crystal.

From the project

RP2040 硬件设计

Main components on the B311

SPX3819M5-L-3-3RP2040

B311 bill of materials (BOM)

33 components, 21 distinct parts.

QtyPartRefs
1
SPX3819M5-L-3-3
U1
1
RP2040
U3
1
XO 32 12Mhz 3225 seiko
X1
1
B3U-1000P
J2
2
2.54mm header 01x20
J3, J4
1
Conn_01x03_Male
J5
1
W25Q16JVUXIQ
FLASH1
1
TYPE-C-31-M-12
e1
1
0603 Diode 1N58
D2
1
LED 0402 YELLOW
D3
3
10u
C1, C4, C17
1
15p
C2
2
1u
C3, C10
8
100n
C5, C6, C7, C8, C11, C13, C14, C15
1
1k
R1
1
DNF
R2
1
27Ohms 0402 Resistor
R3
1
27Ohms 0402 Resistor
R4
2
5.1K
R5, R6
1
100K
R7
Show 1 more
QtyPartRefs
1
470
R8

B311 design files

The KiCad project lives in the OS-Q/B311 repository on GitHub; these links point at the commit this page was built from.

B311: common questions

What microcontroller does the B311 use?

The B311 is built around the RP2040, from the RP2040/RP2350 family.

How big is the B311 PCB?

The B311 measures 21.1 × 51.3 mm, has 2 copper layers and is 1 mm thick.

How many components are on the B311?

33 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the B311 design files?

From the OS-Q/B311 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the B311 design in my own project?

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

Can I test firmware for the B311 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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