Qwiic RedBoard Turbo - base board with ATSAMD21G18 microcontroller

Base board compatible with Arduino. It was equipped with an Atmega 328P microcontroller. It has 14 I/O lines (including 6 PWM channels) and 6 analog inputs. SparkFun DEV-14525

Pro Micro is similar to Pro Mini Arduino compatible board, main difference is that Pro Micro uses ATmega32u4 with builtin USB connectivity. Sparkfun DEV-12640

IoT development board the size of Arduino, equipped with an ARM Cortex-M3 processor (STM32F205) and a Wi-Fi communication module (with an integrated antenna and uFL connector). SparkFun DEV-13321

SparkFun DEV-10914 is a compact development board with an ATmega328 and 3.3 V logic level, equipped with basic protection and designed to work with an external USB–UART interface. It is suitable for applications requiring cooperation with low-voltage modules.

A small module matching the contact plate based on a 32-bit microcontroller with ARM Cortex M7 core. Has a microSD slot. PJRC TEENSY41

This board combines the simplicity of the UNO’s Optiboot bootloader (which is used in the Pro series), the stability of the FTDI (which we all missed after the Duemilanove was discontinued) and the R3 shield compatibility of the latest Arduino UNO R3.  SparkFun DEV-13975

Development board with NXP iMXRT1062 ARM Cortex-M7 microcontroller. Equipped with a microSD slot. Version without Ethernet communication. PJRC TEENSY41-NE

Development kit with SAMD21G18A microcontroller with ARM Cortex M0+ core and LoRa RFM95W radio communication module. SparkFun WRL-15836

The Fio v3 is a new spin on the Arduino Fio hardware powered by the ATmega32U4. Not only is it small and LiPo-ready, it’s a very capable XBee-ready development board. DEV-11520

Evaluation kit with Sparkfun Artemis Bluetooth 5.0 module designed on the basis of the Arduino Mega 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-15442

Qduino Mini is a tiny, Arduino-compatible board with ATmega32u4 (8MHz, 32kB Flash, 2kB RAM), a LiPol battery connector and charger built-in. SparkFun DEV-13614

Development kit with ATSAMD51J20 microcontroller with ARM Cortex M4F core. It is clocked at 120 MHz, has 1 MB of Flash and 256 KB of SRAM. There are 6 SERCOM interfaces on the board. SparkFun DEV-14713

Evaluation kit with Bluetooth 5.0 Sparkfun Artemis module. Equipped with a microphone, kmaers and accelerometer. Himax HM01B0 camera included. SparkFun KIT-17071

Board with the ATmega328 microcontroller from the AVR family, there are 20 I/O lines, 6 PWM channels, 6 analog inputs at the user\'s disposal. SparkFun DEV-15123

Evaluation kit with Sparkfun Artemis Bluetooth 5.0 module designed on the basis of the Feather 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 WRL-15574

Development board with NXP iMXRT1062 ARM Cortex-M7 microcontroller. Equipped with a microSD slot. Version without Ethernet communication. PJRC TEENSY41-NE-PINS