Adafruit METRO 328 Development Board - ATmega328, No Headers waterproof ultrasonic the power adapter comprises a

the power adapter comprises a rectifier

Useful spec: 5

3V boards like ESP32

For larger builds

Adafruit METRO 328 Development Board - ATmega328, No Headers waterproof ultrasonic the power adapter comprises aAdafruit METRO 328 without Headers ATmega328 is an official Adafruit product available from Circuitrocks, an official distributor of Adafruit. An Arduino Uno style development board built around the ATmega328, ideal for prototyping and teaching. Why choose this Adafruit board or module? Familiar ATmega328 development platform Compatible with many Arduino style shields and workflows Good for education, prototyping, and general embedded use What you can