Marble Pico
  • Marble Pico
  • Marble Pico
  • Marble Pico
  • Marble Pico
  • Marble Pico

Marble Pico

RLJDMV_AAA
GroundStudio
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GroundStudio Marble Pico development board based on the RP2040 microcontroller, compatible with the Raspberry Pi Pico pinout and equipped with USB Type-C, 8MB QSPI flash memory, STEMMA QT/Qwiic-compatible I2C connector, microSD adapter, and optional LiPo/Lithium battery support. Ideal for embedded projects, sensors, data logging, and fast 3.3V prototyping.
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Description

Original GroundStudio product

GroundStudio products are designed and assembled in Romania as Open Hardware, using high-quality components.

PRODUCT DESCRIPTION:

The GroundStudio Marble Pico development board is based on the RP2040 chip manufactured by Raspberry Pi. It has the same pinout as the Raspberry Pi Pico, but it is equipped with a series of improvements:

  • USB Type-C connector, upgraded from micro USB.
  • 3V3 I2C connector connected to the I2C0 port (default), STEMMA QT or Qwiic compatible, for easier interconnection with a wide range of sensors and modules.
  • Separate 3.3V regulator that powers the ADC_VREF reference voltage for more accurate, noise-free ADC conversion.
  • microSD memory card adapter connected to the SPI0 port (default), allowing, for example, quick storage of data received from a sensor. To use the SPI0 port for another purpose, the adapter can be disconnected using the solder jumpers on the back of the PCB.
  • External 8MB QSPI flash chip, upgraded from 2MB.
  • Connector, not soldered and available as an accessory, for connecting a protected single-cell LiPo or 4.2V lithium battery using the exposed pads on the back of the PCB. Please note that the battery control circuit does not provide discharge protection; it only supports battery charging via the USB Type-C input.

The GroundStudio Marble Pico development board is compatible with sensors and other modules that operate at a 3.3V voltage level.

For use with devices that have a 5V logic level, a separate logic level converter module is required.

There is an on-board LED controlled by the GP25 pin. When the pin is HIGH or LOW, the LED is on or off, respectively. The board also includes 2 additional LEDs for indicating the charging status, "CG", and power status, "ON". These can be disconnected using the solder jumpers on the back of the PCB.

GENERAL PIN FUNCTIONS:

VBUSInput voltage on the board from the USB connector. If the board is not powered through the USB connector, this pin can also be used to power the board from an external regulated 5V DC source.
VSYSIf the board is powered via USB, this pin can be used as a power source for other modules or sensors that require a 4.8-5V voltage and do not have a maximum instantaneous current consumption higher than 200mA. Otherwise, the board can be powered through this pin with a voltage between 3.4V and 6.5V.
3V3A 3.3V source generated by the on-board regulator. The maximum instantaneous current consumption is 200 mA.
GNDPins connected to ground.
ADC_VREFReference voltage for ADC conversion.
RUNUsually used to read or modify the microcontroller reset state.
GPIO pins25 input and output pins. There are 26 GPIO pins in total, but GP15 has a special function during board reset, which is why we do not recommend using it.
PWM channelsThere are 16 channels, and each pin can use a specific channel for the PWM function.

TECHNICAL SPECIFICATIONS:

Microcontrollerdual-core Cortex M0+ Raspberry RP2040*
Voltage regulator2x ME6211C33U4AG-N (ADC reference and power supply)
USB supply voltage [VBUS]5V
Supply voltage [VSYS]3.4V ~ 6.5V
GPIO pins25
Analog input pins3
USB connectorUSB 2.0 Type-C
I2C connectorI2C_3V3 (STEMMA QT or QWIIC compatible)
Maximum DC current per I/O pin4mA (max. 12mA)
Maximum DC current across all I/O pins50mA
External QSPI FLASH memory8MB
SRAM memory264 kB
ROM memory16kB
Approx. PCB dimensions51mm x 21mm

Package content:

1x GroundStudio Marble Pico development board

2x 1x20-pin male headers @ 2.54mm

1x 1x3-pin male header @ 2.54mm

WARNING: The pin headers included in the package are not soldered, and we do not offer soldering services for them.


Product Details
RLJDMV_AAA
6427854000682
1194 Items
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Read user reviews (2)
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