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Last active February 2, 2025 12:32
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yd_rp2040.md

YD-RP2040 by VCC-GND Studio

Advantages over the Raspberry Pi Pico:

  • Inexpensive
  • 16 MB variant available
  • Added PWR power LED
  • The USB interface was changed to type-C USB
  • Added reset button to facilitate reset operation and firmware update operation
  • Added the USRkey user button (GPIO24)
  • Added RGB lights (GPIO23)
  • Change PICO's W25Q16 to W25Q32 (4M) / W25Q64 (8M) / W25Q128 (16M)
  • Easier to read silkscreen for the pins on both sides of the PCB

Disadvantages:

  • Larger footprint of the PCB, no drop-in replacement
  • VBUS not available, cannot power USB devices when acting as USB host? (there is always a diode in the way?)

Solution for USB host power is to solder a tiny piece of a resistor leg like shown here: https://github.com/No0ne/ps2x2pico?tab=readme-ov-file#troubleshooting

image

CircuitPython

There is a custom CircuitPython build for this board:

https://circuitpython.org/board/vcc_gnd_yd_rp2040/

It has built in board.NEOPIXEL and board.BUTTON pins.

NOTE: As described in adafruit/Adafruit_CircuitPython_NeoPixel#167, turns out that the pads labeled "R58" need to be bridged (soldered) for it to work.

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