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Arduino UNO-compatible development board built around the ATmega328P at 16 MHz with 32KB flash, micro USB, and Adafruit's signature black PCB with gold-plated pads.

Arduino UNO with built-in Ethernet and microSD slot based on the ATmega328P at 16 MHz — a self-contained board for networked Arduino projects without needing a separate Ethernet shield.

Round, sewable Arduino-compatible wearable platform with ATmega32u4, native USB, NeoPixel, JST battery connector, and alligator-clip-friendly pads in a 45mm diameter form factor.

Arduino board with ATmega32u4 featuring native USB — no separate USB chip needed — allowing it to emulate keyboards, mice, and joysticks while maintaining full Arduino IDE compatibility.

Smallest official Arduino with native USB, based on ATmega32u4 at 16 MHz. Breadboard-friendly at 48×18mm with 20 I/O pins, 12 analog inputs, and USB HID/CDC emulation capability.

Breadboard-friendly ATmega328P Arduino-compatible board at 16 MHz, 5V, with USB-C, STEMMA QT I2C port, 32KB flash, and CP2102N USB-serial chip — a compact modern drop-in for the Arduino UNO.

Feather-format ATmega32u4 board at 8 MHz, 3.3V with LiPo charging, native USB, onboard prototyping area, 20 GPIO, JST battery connector, and 100mA integrated charger — all in 51×23mm.

Feather-format ATmega32u4 data logger at 8 MHz, 3.3V with onboard microSD slot, LiPo charging, native USB, 20 GPIO, and 100mA charger — built for portable data logging applications.

Feather-format ATmega32u4 board with integrated nRF51822 Bluetooth LE, LiPo charging, native USB, 20 GPIO, and over-the-air firmware updates — an all-in-one BLE development board for iOS and Android c

The DC Boarduino is a slim, breadboard-friendly Arduino-compatible development board based on the ATmega328 at 16MHz, with a 2.1mm DC barrel jack for 7–17V input, USB-TTL serial header, ICSP programmi