The Go to product viewer dialog for this item. is a popular, low-cost development board based on the Raspberry Pi RP2040 microcontroller. While it is highly compatible with the original Raspberry Pi Pico, its schematic includes several hardware enhancements—such as a WS2812 RGB LED, a user programmable button, and an upgraded USB-C connector—that make it a versatile choice for makers. Understanding the YD-RP2040 Schematic
The YD-RP2040 schematic follows the core reference design provided by Raspberry Pi but introduces specific modifications to the peripheral circuitry. Below are the primary sections you will find in its circuit diagram:
RP2040 Microcontroller Core: The heart of the board, featuring the Dual-core Arm Cortex-M0+ processor. The schematic shows connections for the 12MHz crystal oscillator and the necessary decoupling capacitors for power stability.
Power Management (5V to 3.3V): Unlike the standard Pico, which uses a buck-boost converter, many YD-RP2040 schematics utilize a low-dropout (LDO) regulator to convert the 5V USB/VBUS input to the 3.3V required by the MCU.
USB-C Interface: The schematic replaces the Micro-USB port with a USB-C connector. This involves specific CC1/CC2 pull-down resistors to ensure proper power delivery negotiation with modern USB-C hosts.
Flash Memory: It typically includes 4MB or 16MB of QSPI Flash (often the W25Q series), significantly more than the standard Pico’s 2MB. Key Pinout and Peripheral Map
When reviewing the YD-RP2040 schematic, pay close attention to the pins that differ from the official Pico layout:
RGB LED (WS2812): Connected to GP23. This allows for multicolor status indications without using external wiring.
User Button (KEY): Connected to GP24. This is an active-low button that can be used for user input during runtime, separate from the Boot button.
Blue Power LED: Usually hardwired to the 3.3V rail or connected to GP25 (the same as the standard Pico onboard LED). Schematic Advantages for DIY Projects
The YD-RP2040 is often preferred in schematics for custom PCBs because it breaks out the SWD (Serial Wire Debug) pins more conveniently than the original Pico. This allows for easier debugging using a second Pico or a dedicated debugger like the CMSIS-DAP. Additionally, the inclusion of a Reset (RST) button on the board layout (connected to the RUN pin in the schematic) eliminates the need to unplug the USB cable to restart code execution. Technical Specifications Summary Schematic Reference MCU Raspberry Pi RP2040 Go to product viewer dialog for this item. Dual-core, 264KB SRAM Flash W25Q32 / W25Q128 4MB or 16MB Options USB USB Type-C Improved Durability LEDs GP25 (Blue), GP23 (RGB) Built-in status indicators Buttons Reset & GP24 (User) Enhanced interaction
is a popular third-party development board from VCC-GND Studio that serves as a feature-rich alternative to the official Raspberry Pi Pico. Its schematic improves upon the original Pico by adding user-friendly hardware like a USB-C port reset button onboard RGB LED (WS2812) 🛠️ Schematic Breakdown ydrp2040 schematic
The YD-RP2040 follows the core design principles of the Raspberry Pi RP2040 but integrates several hardware "quality of life" upgrades. 1. Power & Voltage Regulation LDO Regulator
: Converts 5V (from USB) to 3.3V. It usually employs an ME6211 or similar low-dropout regulator to power the IOVDD pins. Internal 1.1V Core
: The RP2040's internal regulator is used to generate the 1.1V needed for the digital core. Input Protection
: Includes Schottky diodes for "diode OR-ing," allowing the board to be powered by both USB and an external battery (VSYS) safely. 2. Core Microcontroller Support Flash Storage
: Utilizes QSPI Flash (often 4MB or 16MB Winbond chips). The schematic shows the required boot sampling circuit. Clock Source 12 MHz crystal
or resonator is standard to ensure the PLL (Phase-Locked Loop) functions correctly for USB timing. Decoupling
: Each power pin (IOVDD, DVDD, ADC_AVDD) requires a 0.1 μF capacitor placed as close to the pin as possible to reduce noise. 3. Integrated Peripherals USB-C Interface
: Replaces the Pico's Micro-USB. It includes 5.1kΩ pull-down resistors on the CC1/CC2 lines to enable power negotiation with modern USB-C hosts. WS2812 RGB LED : Connected to a specific GPIO (often GPIO23 or GPIO25).
Note: On some versions, this must be enabled via a solder bridge User Buttons
: Pulls the QSPI_CS pin to ground to force the chip into USB bootloader mode. RUN (Reset)
: Unlike the official Pico, the YD-RP2040 includes a dedicated physical reset button tied to the RUN pin. 🔍 Review & Design Tips Potential Pitfall USB-C Port Robust, modern, and symmetrical. Requires CC resistors to work with C-to-C cables. Reset Button Saves the wear-and-tear of unplugging cables. Can be accidentally pressed if not recessed. Built-in status indication without external wires. Higher power consumption than a standard LED. 4MB+ Flash Double the capacity of the standard Pico. Requires correct firmware settings to access extra space. Expert Recommendations for Custom Designs: USB Termination 27 Ω resistors The Go to product viewer dialog for this item
are placed on the USB D+ and D- lines to match characteristic impedance. : The RP2040 has a large central ground pad (Pad 57). This
be connected to a solid ground plane with multiple vias for thermal dissipation and signal integrity. QSPI Routing
: Keep the traces between the RP2040 and the Flash chip short and of equal length to avoid timing errors. 🔗 Technical Resources
It sounds like you're looking for the schematic (circuit diagram) for a device labeled YDRP2040. However, this identifier is not a standard, widely known module from major brands like Raspberry Pi (RP2040), Waveshare, or Adafruit.
Based on the naming pattern, it is likely:
To find the correct schematic, please clarify:
In the meantime, here are your most practical next steps:
"YDRP2040 schematic filetype:pdf" or "YDRP2040 circuit diagram" on Google or Baidu.datasheets.raspberrypi.com/pico/pico-schematic.pdf) if the pinout matches.If you can provide a photo of the board or any additional text/codes from it, I can help identify the exact schematic or point you to a matching pinout table.
, a high-performance development board by VCC-GND Studio, is based on the Raspberry Pi RP2040 microcontroller. Below are the key schematic details and resources for this specific board. Schematic Resources
You can find the official schematic and design files through these repositories: Official PDF Schematic : The full circuit diagram is available on the initdc YD-RP2040 GitHub PCB Design Files
: Altium/KiCad compatible files, including the base board layout, are hosted on vcc-gnd GitHub Technical Discussions A custom or generic RP2040-based development board (e
: Detailed hardware differences and power schematic analysis can be found on the Raspberry Pi Forums Key Design Features
differs from the standard Raspberry Pi Pico in several hardware aspects: USB Connection USB Type-C connector instead of the Pico's Micro-USB. Power Pin Labeling instead of VSYS. instead of VBUS. Integrated WS2812 RGB LED By default, the RGB LED resistor ( ) is often not connected to keep GPIO23 free for other uses.
To use the built-in LED, you must solder the two pads at the R68 position together to link it to Reset & User Buttons : Includes a dedicated Reset button
and a User button (labeled "KEY"), whereas the original Pico only has a BOOTSEL button. Arduino Forum Core RP2040 Specifications
The heart of the board follows the standard RP2040 architecture: Dual-core Arm Cortex-M0+ : Runs at up to 133 MHz.
: 264KB on-chip SRAM; typically paired with 4MB or more external Flash memory on the YD version.
: Requires 3.3V for I/O and uses an internal regulator to generate 1.1V for the core. Raspberry Pi C++ firmware to this specific board? YD-RP2040 built-in W2812 - #2 by bertrandvandeportaele
Critical design rule: The QSPI traces must be length-matched and kept short. The schematic often includes series termination resistors (22Ω to 33Ω) close to the RP2040 to reduce signal reflections. Additionally, a 100nF decoupling capacitor is placed directly at the flash chip's VCC pin.
The FLASH_CS# pin (Pin 24) requires a specific pull-up resistor.
FLASH_CS# to 3.3V.The RP2040 has a native USB 1.1 PHY (supports Full Speed 12Mbit/s).
The board typically accepts a voltage input (often 5V from USB or a battery).
The USB portion of the schematic (Micro-USB or USB-C) includes:
If the schematic shows a USB-C connector, pay attention to the CC1 and CC2 resistors (5.1k to GND) for proper orientation detection.
