COMING SOON – Adafruit Feather RP2040 SCORPIO – 8 Channel NeoPixel Driver

COMING SOON – Adafruit Feather RP2040 SCORPIO – 8 Channel NeoPixel Driver

If there is one thing Adafruit is known for, its mega-blinky-fun-rainbow-LEDs. We just love sticking NeoPixels anywhere and everywhere. When we saw the new ‘PIO’ peripheral on the RP2040 from Raspberry Pi, we just knew it would be perfect for driving large quantities of NeoPixels. So we created this board, the Adafruit Feather RP2040 SCORPIO, designed specifically for NeoPixel (WS2812) driving but also good for various other PIO-based projects that want to take advantage of the Feather pinout with 8 separate consecutive outputs (or inputs).

The RP2040 PIO state machine is perfect for LED driving: it can generate perfect waveforms, with up to 8 outputs concurrently, all through DMA. That means that you don’t need to use any processor time to bit-bang-out the LED data. Just set up the buffer and tell the PIO peripheral to ‘make it so’ and it will shove that data to the 8 outputs without delay while your code can continue to read buttons, play music, run CircuitPython – whatever you like!

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The SCORPIO has a clever pinout, where all the standard Feather pins are the same as the GPIO pins, plus the standard I2C, SPI, and UART lines – and theres still enough pins left over to have 8 consecutive pins for PIO usage on GPIO16 through GPIO23 inclusive.

To make NeoPixel usage glitch-free there is a 3V->5V level shifter so that the output logic is 5V. If you happen to want 3V signals, you can adjust the shifter voltage with a jumper on the bottom. It’s also possible to flip the direction of the level shifter to make the 8 I/O pins inputs – say for making a logic analyzer – with a directional jumper selection also on the bottom of the PCB.

The RP2040 SCORPIO also has a ton of RAM, 264KB, making it trivial to buffer huge numbers of NeoPixels…several thousand if needed. In fact, there’s so much RAM you can even dither the pixels to for finer brightness control, for better-looking LEDs at low brightness or for gamma correction.

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We have NeoPXL8 driver code available in Arduino and CircuitPython, so you can jump immediately to making beautiful artworks driven by the Adafruit SCORPIO.

  • Measures 2.0″ x 0.9″ x 0.28″ (50.8mm x 22.8mm x 7mm) without headers soldered in
  • Light as a (large?) feather – 5 grams
  • RP2040 32-bit Cortex M0+ dual core running at ~125 MHz @ 3.3V logic and power
  • 264 KB RAM
  • 8 MB SPI FLASH chip for storing files and CircuitPython/MicroPython code storage. No EEPROM
  • Tons of GPIO! 21 x GPIO pins with following capabilities:
    • Four 12-bit ADCs (one more than Pico)
    • Two I2C, Two SPI, and two UART peripherals, we label one for the ‘main’ interface in standard Feather locations
    • 16 x PWM outputs – for servos, LEDs, etc
    • 8 x consecutive GPIO outputs with 5V level shifting for PIO NeoPixel driving
  • Built-in 200mA+ lipoly charger with charging status indicator LED
  • Pin #13 red LED for general purpose blinking
  • RGB NeoPixel for full-color indication on D4
  • On-board STEMMA QT connector that lets you quickly connect any Qwiic, STEMMA QT or Grove I2C devices with no soldering!
  • Both Reset button and Bootloader select button for quick restarts (no unplugging-replugging to relaunch code). Bootloader button is also available as user-input button on GPIO #7
  • 3.3V Power/enable pin
  • 4 mounting holes
  • 12 MHz crystal for perfect timing.
  • 3.3V regulator with 500mA peak current output
  • USB Type C connector lets you access built-in ROM USB bootloader and serial port debugging

Coming soon!

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