Pico stretch2
About the Pico stretch2 PCB
Pico stretch2 is an open source RP2040/RP2350 PCB design by jvanderberg, published on GitHub. It is a 4-layer board measuring 82.1 × 21 mm, with 59 components from 30 distinct parts.
Its main chip is the RP2350B_C42415655, from the RP2040/RP2350 family. Other key parts include the ME6217C33M5G, W25Q128JVSIQTR, 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
An RP2350B dev board that breaks out all 48 GPIO pins while following the original Raspberry Pi Pico footprint for the first 20 pins on each side. It adds another 12 pins on each side — keeping the same 0.1" pitch and castellated edges so it remains breadboard-friendly.
An RP2350B dev board that breaks out all 48 GPIO pins while following the original Raspberry Pi Pico footprint for the first 20 pins on each side. It adds another 12 pins on each side — keeping the same 0.1" pitch and castellated edges so it remains breadboard-friendly.
The board supports PSRam (GP0 chip select) and the Radio Module 2 for WiFi/BT
Features: - USB-C connector - Boot/Reset buttons - SWDIO debugging header - Radio Module 2 footprint / jumpers - PSRam footprint / jumper - Breaks out all 48 GPIOs - Supports existing Pi Pico pinout projects (if there's room for a little overhang…
Main components on the Pico stretch2
Pico stretch2 bill of materials (BOM)
59 components, 30 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2350B_C42415655 Raspberry Pi | RP2350B_C42415655 | U1 |
| 1 | ME6217C33M5G MICRONE(Nanjing Micro One Elec) | SOT-23-5 | U3 |
| 1 | W25Q128JVSIQTR Winbond Elec | SOIC-8_5.3x5.3mm_P1.27mm | U4 |
| 1 | RPI Radio Module 2 | rpi_rmc20452t | U5 |
| 1 | ESP-PSRAM32 | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | ABM8-272-T3_C20625731 Abracon LLC | ABM8-272-T3_C20625731 | X1 |
| 1 | CONN_01X03_PIN Conn_01x03_Pin | PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | CONN_01X64_CASTELLATED_PADS Conn_01x64_Castellated_Pads | Castellated_Pad_64 | J4 |
| 2 | K2-1808SN-A4SW Korean Hroparts Elec | K2-1808SN-A4SW | Boot1, Reset1 |
| 1 | KT-0603R Hubei KENTO Elec | KT-0603R | PWR_LED1 |
| 1 | TYPE-C_16PIN_2MD_073 SHOU HAN | TYPE-C_16PIN_2MD_073 | USB1 |
| 1 | DFLS130L-7 Diodes Incorporated | D_PowerDI-123 | D1 |
| 2 | C3029033 RCLAMP0521P_TCT_C3029033 MSKSEMI | RCLAMP0521P_TCT_C3029033 | D2, D3 |
| 1 | AOTA-B201610S3R3-101-T Abracon LLC | AOTA-B201610S3R3-101-T | L1 |
| 15 | 100NF 100nF SAMSUNG(三星) | C_0402_1005Metric | C1, C2, C3, C4, C6, C7, C8, C9 +7 |
| 5 | 4.7UF 4.7uF Samsung Electro-Mechanics | C_0402_1005Metric | C5, C10, C11, C12, C19 |
| 2 | 15PF 15pF FH(风华) | C_0402_1005Metric | C17, C18 |
| 1 | CL10A475KO8NNNC Samsung Electro-Mechanics | C_0603_1608Metric | C24 |
| 1 | 10UF 10uF Samsung Electro-Mechanics | C_0603_1608Metric | C37 |
| 2 | CL05B104KO5NNNC Samsung Electro-Mechanics | C_0402_1005Metric | C38, C39 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CL05A106MQ5NUNC Samsung Electro-Mechanics | C_0402_1005Metric | C40 |
| 2 | 5.1kΩ UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R1, R4 |
| 3 | 33Ω UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R2, R3, R6 |
| 2 | 1kΩ UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R5, R28 |
| 1 | 1Ω UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R7 |
| 1 | 200Ω UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R8 |
| 4 | 10kΩ UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R9, R10, R14, R16 |
| 1 | 100kΩ UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R11 |
| 1 | 2kΩ UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R12 |
| 1 | 470Ω UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R15 |
Pico stretch2 design files
The KiCad project lives in the jvanderberg/pico-stretch2 repository on GitHub; these links point at the commit this page was built from.
- Layoutpico-stretch2.kicad_pcb
- Schematicpico-stretch2.kicad_sch
- BOMproduction/bom.csv
Pico stretch2: common questions
What microcontroller does the Pico stretch2 use?
The Pico stretch2 is built around the RP2350B_C42415655, from the RP2040/RP2350 family.
How big is the Pico stretch2 PCB?
The Pico stretch2 measures 82.1 × 21 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Pico stretch2?
59 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 Pico stretch2 design files?
From the jvanderberg/pico-stretch2 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 stretch2 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 stretch2 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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