Raspberry Pi RP2350: Pico 2 alternatives with wireless, more flash or smaller

Hobby boards with the new Raspi microcontroller are also available from Adafruit, Sparkfun, Pimoroni, Seeed, some with a fast HSTX connection or WIFI.

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Various DIY boards with the Raspberry Pi RP2350 microcontroller

Various DIY boards with the Raspberry Pi RP2350 microcontroller

(Image: Raspberry Pi Plc.)

3 min. read
This article was originally published in German and has been automatically translated.

The new Raspberry Pi RP2350 microcontroller with ARM and RISC-V cores is not only soldered onto the Pico 2 by the Raspi developers themselves. The brands Adafruit, Bus Pirate, Cytron, Invector Labs, Melopero, Pimoroni, Solder Party, SparkFun and Switch Science have also announced their own RP2350 boards. Most of them already offer boards with the RP2350 predecessor RP2040.

Some Pico 2 alternatives are significantly smaller for particularly compact projects. Others are larger and have more or special connections, for example for sensors and MicroSD cards. There are also boards with WLAN and Bluetooth.

A new feature is a "Highspeed Serial Transmit" (HSTX) port. According to the RP2350 data sheet, this is a serial data output that works with Double Data Rate (DDR) and up to 150 MHz clock speed. This means that the RP2350 can output up to 300 megabit/s per pin and use up to 8 GPIO pins in parallel.

The Adafruit Feather RP2350 has 8 MByte flash, the GPIO pinout for Feather Wings expansions and a Stemma QT socket for the simple plug-in connection of compatible (I2C) sensors. There is also a 22-pin HSTX port.

Adafruit is also planning a Metro RP2350 with pins for Arduino Shield and a MicroSD card reader.

Adafruit Feather RP2350 with the new HSTX port (right).

(Image: Adafruit)

The Cytron MOTION 2350 Pro combines the RP2350 with outputs for direct control of DC motors and servos, for example for robots.

In addition to the RP2350, ILabs also solders an Espressif ESP32-C6 for WLAN, Bluetooth (LE), Zigbee, Thread and Matter onto the Challenger+ RP2350 WiFi6/BLE5. The RP2350 also has an additional 8 MB of pseudo-SRAM (PSRAM) and 8 MB of flash memory.

Melopero Electronics is now selling the Melopero Perpetuo Lora with the Embit EMB-LR1276S LoRaWAN module, which in turn contains a microchip module with the Semtech SX1276 transceiver, for 25 euros.

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Pimoroni has four RP2350 boards. The Pimoroni Tiny 2350 (8 euros, available immediately) and PGA2350 are particularly tiny. The Pimoroni Plasma 2350 has a connector for Qwiic/Stemma QT and a new connector called "SP/CE". In addition, the Pimoroni Explorer with RP2350B comes as a tinkering platform with a 2.8-inch display, buttons, a small breadboard and several connectors.

Seeed has developed the very compact Seeed XIAO RP2350 with USB-C power supply. Solder Party offers the RP2350 "stamps" RP2350 Stamp and RP2350 Stamp XL.

The Sparkfun Pro Micro RP2350 has the "Pro Micro" design in which SparkFun manufactures many other different modules.

The Switch Science Picossci2 Breakout is similar to the Raspberry Pi Pico 2, the Picossci2 Breakout Module is slightly smaller. The Switch Science Picossci2 Conta Base combines the RP2350 with a wireless module and many plug-in connections.

(ciw)