WiDo - board with ATmega32U4 and WG13000 WiFi module

Plate from the Adafruit Feather series equipped with an ATmega32u4 microcontroller and a small prototype surface (5x7). The chip contains 32KB flash memory, 2KB RAM memory and built-in USB support. The plate is compatible with Arduino. Adafruit 2771

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products. Pololu 3115

At the Feather M0\'s heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! This chip comes with built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip. Adafruit 3179

Board compatible with Arduino, equipped with the ATmega32U4 microcontroller

Development board with AVR ATmega328 microcontroller with a clock signal of 16 MHz. Compatible with Arduino, it is equipped with a STEMMA QT connector. Adafruit 5597

Evaluation kit with Sparkfun Artemis Bluetooth 5.0 module designed on the basis of the Arduino Nano kit. It has a USB C. The board also has a USB-UART converter, a microphone, Lipo battery charging and a JTAG debugging connector. Artemis has support in the Arduino IDE. SparkFun DEV-15443

The board is equipped with ATSAMD21 microcontroller with ARM Cortex-M0 core and SPI Flash memory, GPIO pins and RGB diode. Adafruit 3505

Adafruit Trinket - Mini Microcontroller - 5V Logic

DFRduino Nano V4.0 is a base plate compatible with Arduino Nano. The board has an ATmega 328-20AU microcontroller. The user has 14 GPIO ports (inputs / outputs), of which 6 can generate PWM signal. DFRobot DFR0010

Development board based on the R7FA4M1AB3CFM microcontroller and compatible with Arduino UNO R4 Minima. Waveshare R7FA4 PLUS A

Development board with ATmega4809 microcontroller and Microchip ECC608 cryptographic chip. It is equipped with 6 analog input pins, 14 digital inputs/outputs (5 as PWM output) and Grove ports. Seeed Studio 102010288

Evaluation kit with Sparkfun Artemis Bluetooth 5.0 module designed on the basis of the Arduino UNO kit. It has a USB C. The board also has a USB-UART converter, a microphone and a JTAG debugging connector. Artemis has support in the Arduino IDE. SparkFun DEV-15444

Small evaluation board based on the ATmega328, RoHS

A circuit board compatible with Arduino Leonardo equipped with Atmega32U4 microcontroller, SD card reader and step-up / step-down converter. Polol 4008

IoT development board with ATmega32U4 microcontroller and W5500 Ethernet chip. Compatible with Arduino Leonardo, has a built-in PoE (Power over Ethernet) function. DFRobot DFR0342

Base board compatible with Arduino. It was equipped with the ATSAMD21G18 microcontroller. It has 26 I/O lines and 14 analog inputs. SparkFun DEV-14812