Waveshare RP2350-Tiny Dev Board w/ RP2350A Dual-Core MCU

The board supports drag-and-drop programming via USB Mass Storage Class. Connect it to your computer with a USB cable; it will appear as a removable drive. Simply copy your compiled UF2 firmware file onto this drive, and the board will automatically reset and run the new program. This method is compatible with development environments like the Raspberry Pi Pico SDK, Arduino IDE (with appropriate board support), and MicroPython.

The 12 PIO state machines are dedicated hardware processors that can independently handle precise timing and bit-level I/O operations. They allow you to implement custom communication protocols (such as WS2812 LED control, DPI video, or non-standard serial interfaces) directly in hardware without consuming CPU cycles. This is ideal for generating or reading high-speed signals, offloading the main cores for application logic, and ensuring deterministic real-time performance in complex embedded systems.

Yes, the RP2350-Tiny is designed as a castellated module. The board edges have plated half-holes (castellations) that allow you to solder it directly onto the pads of a custom carrier PCB, similar to a surface-mount component. This integrates the entire microcontroller subsystem into your final product design, saving space and simplifying assembly. Ensure your carrier board provides the necessary power (3.3V), connects required GPIOs, and includes any needed external decoupling capacitors.

The RP2350A microcontroller core and onboard logic operate at 3.3V. You can supply power via the USB port (which provides 5V, regulated down to 3.3V internally) or by applying 3.3V directly to the appropriate VCC pins on the module's castellated edge. Always ensure your power source can deliver sufficient current for your peripherals. The board includes low-power sleep and dormant modes to minimize current draw during idle periods for battery-operated applications.