RP2350 Boards

Over the past few months, I have collected a few boards that utilize the RP2350 microcontroller. In this post, I will provide a brief description of each one.

1:RP2350USB, 2:RP2350 Stamp XL, 3:RP2350-GEEK, 4:RP2350 Stamp,
5:RP2350 Zero, 6:XIAO RP2350, 7:Feather RP2350, 8:Raspberry Pi Pico 2,
9:RP2350B Core Board, 10:Raspberry Pi Pico 2 W

Raspberry Pi Pico 2 and Pico 2 W

I already talked about these boards. They follow the shape and pin-out of the original Pico boards, including the use of a USB micro connector and the absence of a reset button. Both have 4 megabytes of Flash (an upgrade from the 2 megabytes in the original Pico) and a single user-controlled LED (connected to the RF module in the W boards).

All the other boards mentioned here use a USB-C connector and, except for the RP2350-GEEK, include a reset button.

SeeedStudio XIAO RP2350

SeeedStudio's XIAO line has many models, each using a different microcontroller, sharing the same shape and pin-out (as far as possible). The RP2350 model includes battery support and access to a few other pins through solder points at the bottom side of the board. It has two user-controlled LEDs, one single-color and the other RGB (WS2812).

It is the smallest board in this group, but it has only 2 megabytes of RAM.

Solder Party RP2350 Stamp and RP2350 Stamp XL

You can read my mini-review of these boards here. These boards have a 2 mm pin spacing and can be used with "Carrier Boards". Both have 16 megabytes of Flash. The XL modules use the RP2350B chip that has additional GPIO and ADC pins.

Waveshare RP2350 Zero

This board has the same dimensions and pinout as the RP2040 Zero (a favorite of mine for small projects). A compact board with access to many pins. It features 16 megabytes of Flash and an RGB (WS2812) LED.

WeActStudio RP2350B Core Board

Another board using the RP2350B model, it uses dual-row connectors that are not protoboard-friendly. It has 16 megabytes of Flash, one user-controlled single-color LED, and one user-readable button.

Adafruit Feather RP2350 with with HSTX Port and PSRAM

The Feather is another line of boards with different microcontrollers but the same board dimensions and pinout. The particular model I bought has 8 megabytes of Flash and 8 megabytes of PSRAM and a special connector for using the HSTX peripheral. An additional board is available to connect the HSTX port to a DVI connector for video output.

The board has battery support, one single-color LED, and one RGB (WS2812) LED.

RP2350USB

This is a no-brand board found in many stores on AliExpress. The board can be plugged directly into a USB port, and it is available with 4 or 16 megabytes of Flash. Like the XIAO and RP2350 Zero, a few additional pins are available through solder points.

Waveshare RP2350-GEEK

This board comes in a white enclosure with a USB-A connector. It has 16 megabytes of Flash, a small (1.14") color display with 240x135 resolution, and a RGB (WS2812) LED. There are connectors for USART, DEBUG, I2C, and micro SD. It has a BOOT button, but no Reset button.

Concluding Notes

For general use, particularly in a protoboard, I recommend the Pico boards. For compact projects, the RP2350 Zero and XIAO are good options. The other boards are more appropriate for specific projects.