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Pico stretch

jvanderberg·pico-stretch

Pico stretch PCB layout, top view — open source RP2040/RP2350 board by jvanderberg
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About the Pico stretch PCB

Pico stretch is an open source RP2040/RP2350 PCB design by jvanderberg, published on GitHub. It is a 4-layer board measuring 84.8 × 21 mm, with 59 components from 31 distinct parts.

Its main chip is the C42415655, from the RP2040/RP2350 family. Other key parts include the C427602, C97521, RPI Radio Module 2 and ESP-PSRAM32. By type, the board carries 27 capacitors, 16 resistors, 5 ICs, 3 diodes, 2 connectors and 1 crystal.

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

From the project

RP2350B DevBoard KiCad design

This is an RP2350B Dev board that breaks out all 48 GPIO pins.

It follows the original footprint of the RP2040 dev board, but adds 12 pins on each side.

The production files for JLCPCB are in the 'production' directory.

pico-stretch.zip is the zipped Gerber files.

bom.csv and positions.csv are the Bill of materials and placements files respectively.

Main components on the Pico stretch

C42415655C427602C97521RPI Radio Module 2ESP-PSRAM32

Pico stretch bill of materials (BOM)

59 components, 31 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C42415655
~
Raspberry Pi(树莓派)
U1
1
C427602
~
MICRONE(南京微盟)
U3
1
C97521
Winbond W25Q128JVSIQ
Winbond Elec
U4
1
RPI Radio Module 2
U5
1
ESP-PSRAM32
U6
1
C20625731
~
ABRACON
X1
1
CONN_01X03_PIN
Conn_01x03_Pin
J2
1
CONN_01X64_CASTELLATED_PADS
Conn_01x64_Castellated_Pads
J4
2
K2-1808SN-A4SW-01
韩国韩荣
Boot1, Reset1
1
Red
Hubei KENTO Elec
PWR_LED1
1
C2765186
~
SHOU HAN(首韩)
USB1
1
C110493
~
DIODES(美台)
D1
2
RCLAMP0521P.TCT-MS
MSKSEMI(美森科)
D2, D3
1
C42411119
~
ABRACON
L1
14
100NF
100nF
Samsung Electro-Mechanics
C1, C2, C3, C4, C5, C6, C7, C8 +6
4
100NF
100nF
YAGEO(国巨)
C9, C15, C38, C39
2
4.7UF
4.7uF
Samsung Electro-Mechanics
C10, C12
2
4.7UF
4.7uF
Samsung Electro-Mechanics
C11, C19
2
15PF
15pF
FH(风华)
C17, C18
1
4.7NF
4.7nF
FH(Guangdong Fenghua Advanced Tech)
C24
Show 11 more
QtyPartRefs
2
10UF
10uF
Samsung Electro-Mechanics
C37, C40
2
5.1kΩ
UNI-ROYAL(Uniroyal Elec)
R1, R4
3
33Ω
UNI-ROYAL(Uniroyal Elec)
R2, R3, R6
1
1kΩ
UNI-ROYAL(Uniroyal Elec)
R5
1
1Ω
UNI-ROYAL(Uniroyal Elec)
R7
1
200Ω
UNI-ROYAL(Uniroyal Elec)
R8
4
10kΩ
UNI-ROYAL(Uniroyal Elec)
R9, R10, R14, R16
1
100kΩ
UNI-ROYAL(Uniroyal Elec)
R11
1
2kΩ
UNI-ROYAL(Uniroyal Elec)
R12
1
470Ω
UNI-ROYAL(Uniroyal Elec)
R15
1
1kΩ
UNI-ROYAL(Uniroyal Elec)
R28

Pico stretch design files

The KiCad project lives in the jvanderberg/pico-stretch repository on GitHub; these links point at the commit this page was built from.

Pico stretch: common questions

What microcontroller does the Pico stretch use?

The Pico stretch is built around the C42415655, from the RP2040/RP2350 family.

How big is the Pico stretch PCB?

The Pico stretch measures 84.8 × 21 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Pico stretch?

59 components, from 31 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 Pico stretch design files?

From the jvanderberg/pico-stretch 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 Pico stretch design in my own project?

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

Can I test firmware for the Pico stretch 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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