# Waveshare RP2350B-Plus-W > Compact Pico-form-factor development board featuring the Raspberry Pi RP2350B dual-architecture MCU with WiFi and Bluetooth 5.2 via the Raspberry Pi Radio Module 2, 16MB flash, 26 GPIO pins, and USB-C connectivity. ## Quick Facts - **Brand:** Waveshare - **Board Type:** dev-board - **Price:** ~$10.99 - **CPU:** ARM Cortex-M33 / RISC-V Hazard3 dual-core @ 150MHz, FPU, DSP, TrustZone, 12 PIO state machines - **CPU Architecture:** ARM Cortex-M33 / RISC-V Hazard3 - **CPU Cores:** 2 - **RAM:** 520KB SRAM - **Flash:** 16MB - **USB:** USB-C (USB 1.1 host/device) - **Power:** 5V - **Operating Voltage:** 3.3V - **Operating Temp:** -20°C to +70°C - **Dimensions:** 51 × 21mm - **Weight:** 4g - **Antenna:** Built-in PCB antenna ## Connectivity - **Wifi:** 802.11 b/g/n - **Bluetooth:** Bluetooth 5.2 ## Certifications FCC, CE ## Use Cases - wireless-sensor-node - prototyping - iot ## Components - **RP2350B** (mcu): Raspberry Pi RP2350B dual-core microcontroller with switchable ARM Cortex-M33 and Hazard3 RISC-V cores at 150MHz, 520KB SRAM, 48 GPIO, 12 PIO state machines, and hardware security features including TrustZone and secure boot. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdatasheets.raspberrypi.com%2Frp2350%2Frp2350-datasheet.pdf&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) - **CYW43439** (wifi-bluetooth-module): Infineon AIROC CYW43439 combo chip inside the Raspberry Pi Radio Module 2, providing single-band 2.4GHz WiFi 4 (802.11 b/g/n) and Bluetooth 5.2 with integrated PA, LNA, and TR switch. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.infineon.com%2Fpart%2FCYW43439&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) - **ME6217C33M5G** (voltage-regulator): Microne ME6217C33M5G low dropout regulator providing stable 3.3V output with up to 800mA current for powering the RP2350B and peripherals. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.lcsc.com%2Fdatasheet%2Flcsc_datasheet_1912111437_MICRONE-Nanjing-Micro-One-Elec-ME6217C33M5G_C427602.pdf&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) ## GPIO Map | Pin | Name | Type | Functions | |-----|------|------|-----------| | GP0 | UART0 TX / I2C0 SDA / SPI0 RX | — | digital-input, digital-output, pwm | | GP1 | UART0 RX / I2C0 SCL / SPI0 CSn | — | digital-input, digital-output, pwm | | GP2 | I2C1 SDA / SPI0 SCK | — | digital-input, digital-output, pwm | | GP3 | I2C1 SCL / SPI0 TX | — | digital-input, digital-output, pwm | | GP4 | UART1 TX / I2C0 SDA / SPI0 RX | — | digital-input, digital-output, pwm | | GP5 | UART1 RX / I2C0 SCL / SPI0 CSn | — | digital-input, digital-output, pwm | | GP6 | General GPIO | — | digital-input, digital-output, pwm | | GP7 | General GPIO | — | digital-input, digital-output, pwm | | GP8 | General GPIO | — | digital-input, digital-output, pwm | | GP9 | General GPIO | — | digital-input, digital-output, pwm | | GP10 | SPI1 SCK | — | digital-input, digital-output, pwm | | GP11 | SPI1 TX | — | digital-input, digital-output, pwm | | GP12 | SPI1 RX | — | digital-input, digital-output, pwm | | GP13 | SPI1 CSn | — | digital-input, digital-output, pwm | | GP14 | General GPIO | — | digital-input, digital-output, pwm | | GP15 | General GPIO | — | digital-input, digital-output, pwm | | GP16 | General GPIO | — | digital-input, digital-output, pwm | | GP17 | General GPIO | — | digital-input, digital-output, pwm | | GP18 | General GPIO | — | digital-input, digital-output, pwm | | GP19 | General GPIO | — | digital-input, digital-output, pwm | | GP20 | General GPIO | — | digital-input, digital-output, pwm | | GP21 | General GPIO | — | digital-input, digital-output, pwm | | GP22 | General GPIO | — | digital-input, digital-output, pwm | | GP40 | ADC0 | — | digital-input, digital-output, adc | | GP41 | ADC1 | — | digital-input, digital-output, adc | | GP42 | ADC2 | — | digital-input, digital-output, adc | ## Description ## Overview The Waveshare RP2350B-Plus-W is a compact development board built around the Raspberry Pi RP2350B microcontroller, featuring a unique dual-architecture design that lets developers choose between dual ARM Cortex-M33 cores or dual Hazard3 RISC-V cores at runtime. This flexibility makes it an ideal platform for experimenting with both ARM and RISC-V ecosystems on a single board. Wireless connectivity is provided by the Raspberry Pi Radio Module 2, which integrates the Infineon CYW43439 chip for WiFi 4 (802.11 b/g/n) and Bluetooth 5.2 support. The board ships with 16MB of onboard NOR flash and 520KB of SRAM, with reserved solder pads for optional PSRAM expansion. In a Pico-compatible form factor measuring just 51 x 21mm and weighing only 4 grams, the RP2350B-Plus-W exposes 26 GPIO pins with support for 2x UART, 2x SPI, 2x I2C, 3 ADC channels, and 22 PWM channels. Twelve programmable I/O (PIO) state machines enable custom peripheral protocols. Programming is supported via MicroPython, CircuitPython, Arduino (arduino-pico core), C/C++ Pico SDK, and drag-and-drop UF2 flashing over USB. ## Where to Buy - [Waveshare](https://openhardware.directory/r?to=https%3A%2F%2Fwww.waveshare.com%2Frp2350b-plus-w.htm&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) — 10.99 ## Resources - [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.waveshare.com%2Frp2350b-plus-w.htm&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) - [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwww.waveshare.com%2Fwiki%2FRP2350B-Plus-W&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) - [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdatasheets.raspberrypi.com%2Frp2350%2Frp2350-datasheet.pdf&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) - [schematics](https://openhardware.directory/r?to=https%3A%2F%2Ffiles.waveshare.com%2Fwiki%2FRP2350B-Plus-W%2FRP2350B-Plus-W.pdf&ref=openhardware.directory&product=waveshare-rp2350b-plus-w&source=md-export) ## Images ![Waveshare RP2350B-Plus-W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/waveshare-rp2350b-plus-w/197db5829ef1.jpg) ![Waveshare RP2350B-Plus-W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/waveshare-rp2350b-plus-w/672fee15c975.jpg) ![Waveshare RP2350B-Plus-W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/waveshare-rp2350b-plus-w/e74c4cd8ec48.jpg) ![Waveshare RP2350B-Plus-W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/waveshare-rp2350b-plus-w/4ba997845536.jpg) ![Waveshare RP2350B-Plus-W](https://nbg1.your-objectstorage.com/openhardware-directory/entities/waveshare-rp2350b-plus-w/9fd4f699c034.jpg) --- [View full device page](https://openhardware.directory/devices/waveshare-rp2350b-plus-w)