The Waveshare RP2350-USB-A is a 33 × 17.5 mm development board built around the Raspberry Pi RP2350A — and its headline trick is the full-size USB Type-A port on board. Driven through the RP2350's PIO block, that port lets the microcontroller act as a USB host, so a keyboard, mouse, gamepad or other USB device plugs straight into your project instead of needing a separate host controller.
A second USB Type-C connector handles power and programming, with the usual drag-and-drop UF2 flashing over USB mass storage. Underneath sits the same dual-core, dual-architecture silicon as the Raspberry Pi Pico 2: two Arm Cortex-M33 cores or two Hazard3 RISC-V cores at up to 150 MHz, 520 KB of SRAM and 2 MB of onboard flash. Castellated edges mean the whole RP2350-USB-A mini development board can be reflow-soldered onto your own carrier PCB once the prototype works.
Key Features
- 🔌 Onboard USB Type-A host port — implemented via PIO and compatible with USB 2.0/1.1 transmission, so the board can talk to standard USB peripherals directly.
- ⚡ Dual-core, dual-architecture RP2350A — run two Arm Cortex-M33 cores or two Hazard3 RISC-V cores, with a flexible clock up to 150 MHz.
- 🧠 520 KB SRAM and 2 MB onboard flash — a W25Q16JVUXIQ NOR flash holds your program, with accelerated floating-point libraries built into the chip.
- 🔧 15 multi-function GPIO — 2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC and 14 controllable PWM channels, all remappable across the pins.
- 🎛️ 12 PIO state machines — the programmable IO blocks that make the USB-A port possible, and that you can reuse for custom protocols, LED strips or precise timing.
- 🌈 Onboard WS2812 RGB LED — a full-colour status indicator on GP16, plus dedicated BOOT and RESET buttons.
- 📏 Castellated mini form factor — 33.0 × 17.5 mm on a 2.54 mm pitch, light enough at roughly 8.6 g to drop into wearables, drones or tight enclosures, and solderable as an SMD module.
- 🔋 RT9013-33GB 500 mA LDO — low-noise, ultra-fast-response regulation, with low-power sleep and dormant modes for battery work.
- 🛠️ C/C++ SDK and Arduino IDE — the official Raspberry Pi Pico SDK works from the command line or from VS Code and Eclipse, backed by Waveshare's wiki and demo code.
What's On Board
- USB 2.0 Type-A connector — USB host or device via PIO
- USB Type-C connector — programming and power; USB 1.1 with device and host support
- RP2350A — dual-core, dual-architecture MCU up to 150 MHz
- W25Q16JVUXIQ — 2 MB NOR flash
- RT9013-33GB — 500 mA LDO regulator
- WS2812 — addressable RGB LED
- BOOT button — hold while resetting to enter download mode
- RESET button
Specifications
| Part number | RP2350-USB-A (Waveshare) |
| Microcontroller | Raspberry Pi RP2350A |
| CPU cores | Dual Arm Cortex-M33 or dual Hazard3 RISC-V |
| Clock speed | Flexible, up to 150 MHz |
| SRAM | 520 KB |
| Flash | 2 MB onboard NOR flash (W25Q16JVUXIQ) |
| GPIO | 15 multi-function pins |
| ADC | 4 × 12-bit |
| Serial interfaces | 2 × SPI, 2 × I2C, 2 × UART |
| PWM | 14 controllable channels |
| PIO | 12 state machines |
| USB | Type-C (USB 1.1, device and host) + Type-A expansion port via PIO (USB 2.0/1.1 compatible) |
| Regulator | RT9013-33GB, 500 mA LDO |
| Indicator | WS2812 RGB LED on GP16 |
| Buttons | BOOT, RESET |
| Other on-chip | Temperature sensor, accurate clock and timer, accelerated floating-point libraries, low-power sleep and dormant modes |
| Mounting | Castellated module, solderable to a carrier board |
| Dimensions | 33.0 × 17.5 mm, 2.54 mm pin pitch, R2.00 mm corners |
| Weight | Approx. 8.6 g |
| Programming | C/C++ (Pico SDK), Arduino IDE; drag-and-drop UF2 over USB |
What's in the Box
- 1 × Waveshare RP2350-USB-A mini development board
Supplied as a bare castellated module — pin headers are not pre-soldered, and no USB cable is included.
Typical Applications
- USB host projects: reading a keyboard, mouse, barcode scanner or gamepad from a microcontroller
- Custom HID adapters, macro pads and input converters
- Compact robotics and drone controllers where board area is tight
- Wearables and battery-powered sensor nodes using the dormant low-power modes
- SMD-mounted brains for a custom carrier PCB in small production runs
Who It's For
This one is aimed at developers who have hit the limit of a standard Pico-class board: anyone who needs USB host capability without adding a separate controller, teams prototyping a product that will later reflow the module onto their own PCB, and university or FYP groups building HID, robotics or data-logging projects that must stay physically small.
Full documentation, schematics and demo code are published on the Waveshare wiki at waveshare.com/wiki/RP2350-USB-A. The Waveshare RP2350-USB-A development board is available at Digilog.pk with nationwide delivery across Pakistan — order yours today.