A new guide in the Adafruit Learning System: Adafruit Metro RP2040 by Kattni Rembor
Choo! Choo! This is the RP2040 Metro Line, making all station stops at “Dual Cortex M0+ mountain”, “264K RAM round-about” and “16 Megabytes of Flash town”. This train is piled high with hardware that complements the Raspberry Pi RP2040 chip to make it an excellent development board for projects that want Arduino-shape-compatibility or just need the extra space and debugging ports.
- RP2040 main chip, 133MHz clock, 3.3V logic
- 16 MB of QSPI flash for program storage
- 24 GPIO, 4 of which are also analog inputs
- Micro SD card wired up for SPI interfacing, and also has extra pins connected for advanced-user SDIO interfacing (note that there’s no released usage code for SDIO in Arduino/Python, so this is a super-cutting-edge setup).
- Onboard RGB NeoPixel
- Onboard #13 LED
- STEMMA QT/Qwiic port for I2C peripherals and sensors
- And much more
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