An Arduino Nano or a Micro might be the best ... two reset pins, one AREF pin, and three power pins (3.3V, 5V, and VIN). Their onboard LEDs are ... Since it has more usable flash memory ...

Flashing LEDs are all well and good, ... 120, or 180 WS2812B LEDs. An Arduino Nano is charged with running the show, capturing audio via its analog-to-digital converter.

The Arduino Nano and Raspberry Pi Pico support different input voltages, so they also use different power sources. However, they can both be powered with a 5V supply via their onboard USB ports.

Other features of the Maker Nano RP2040 small board which measures just 49.53mm x 21.08mm in size include support for the Arduino IDE, CircuitPython and MicroPython.