![Amazon.com: SparkFun RedBoard Qwiic ATMega328P compatible with Arduino board w/ Qwiic Connector and CH340C Serial-USB Converter IC Breadboardable R3 footprint microcontroller Improved reset button : Electronics Amazon.com: SparkFun RedBoard Qwiic ATMega328P compatible with Arduino board w/ Qwiic Connector and CH340C Serial-USB Converter IC Breadboardable R3 footprint microcontroller Improved reset button : Electronics](https://m.media-amazon.com/images/I/61TVcg5ejHL._AC_UF894,1000_QL80_.jpg)
Amazon.com: SparkFun RedBoard Qwiic ATMega328P compatible with Arduino board w/ Qwiic Connector and CH340C Serial-USB Converter IC Breadboardable R3 footprint microcontroller Improved reset button : Electronics
![MIDI Shield Breakout Board, 3 Right Angle Female MIDI Connector Serial to MIDI Module with Extension 2.54mm Pin Headers for Arduino UNO R3 AVI PIC Digital Interface Adapter : Amazon.sg: Musical Instruments MIDI Shield Breakout Board, 3 Right Angle Female MIDI Connector Serial to MIDI Module with Extension 2.54mm Pin Headers for Arduino UNO R3 AVI PIC Digital Interface Adapter : Amazon.sg: Musical Instruments](https://m.media-amazon.com/images/I/61Pnb6kudEL._AC_UF1000,1000_QL80_.jpg)
MIDI Shield Breakout Board, 3 Right Angle Female MIDI Connector Serial to MIDI Module with Extension 2.54mm Pin Headers for Arduino UNO R3 AVI PIC Digital Interface Adapter : Amazon.sg: Musical Instruments
![Amazon.com: KEYESTUDIO Plus Board for Arduino UNO R3 with Type-C USB Cable, 3.3V 5V 1.5A Output Current, More Powerful Controller Board : Electronics Amazon.com: KEYESTUDIO Plus Board for Arduino UNO R3 with Type-C USB Cable, 3.3V 5V 1.5A Output Current, More Powerful Controller Board : Electronics](https://m.media-amazon.com/images/I/61W15FLVoUL._AC_UF894,1000_QL80_.jpg)
Amazon.com: KEYESTUDIO Plus Board for Arduino UNO R3 with Type-C USB Cable, 3.3V 5V 1.5A Output Current, More Powerful Controller Board : Electronics
![Amazon.com: for XBee Shield Adapter Communication Breakout Board Red for Arduino UNO R3 Connectivity XBEE S2C Module with Female Header Pins : Electronics Amazon.com: for XBee Shield Adapter Communication Breakout Board Red for Arduino UNO R3 Connectivity XBEE S2C Module with Female Header Pins : Electronics](https://m.media-amazon.com/images/I/81xsAKM0BOL._AC_UF894,1000_QL80_.jpg)
Amazon.com: for XBee Shield Adapter Communication Breakout Board Red for Arduino UNO R3 Connectivity XBEE S2C Module with Female Header Pins : Electronics
![Amazon.com: ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino : Electronics Amazon.com: ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino : Electronics](https://m.media-amazon.com/images/I/71CBy2kfnNL._AC_UF894,1000_QL80_.jpg)
Amazon.com: ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino : Electronics
![Programming Arduino Uno using SparkFun Serial Basic Breakout - CH340G - Avrdude, stk500, Bootloader issues - Arduino Forum Programming Arduino Uno using SparkFun Serial Basic Breakout - CH340G - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/e/6/4/e6480f9754525e16ecf47e49f74b9510140adeff_2_413x500.jpeg)
Programming Arduino Uno using SparkFun Serial Basic Breakout - CH340G - Avrdude, stk500, Bootloader issues - Arduino Forum
![Amazon.com: MEGA 2560 R3 Module with ATmega16u2 USB UART - 100% Compatible with Arduino UNO MEGA2560 : Electronics Amazon.com: MEGA 2560 R3 Module with ATmega16u2 USB UART - 100% Compatible with Arduino UNO MEGA2560 : Electronics](https://m.media-amazon.com/images/I/71vQH6B2S3L._AC_UF894,1000_QL80_.jpg)
Amazon.com: MEGA 2560 R3 Module with ATmega16u2 USB UART - 100% Compatible with Arduino UNO MEGA2560 : Electronics
![Amazon.com: AITRIP 3PCS HC-06 RS232 Wireless Serial 4 Pin Bluetooth RF Transceiver Module Support Slave and Master Mode for Arduino : Electronics Amazon.com: AITRIP 3PCS HC-06 RS232 Wireless Serial 4 Pin Bluetooth RF Transceiver Module Support Slave and Master Mode for Arduino : Electronics](https://m.media-amazon.com/images/I/61VBzhysWjL._AC_UF894,1000_QL80_.jpg)
Amazon.com: AITRIP 3PCS HC-06 RS232 Wireless Serial 4 Pin Bluetooth RF Transceiver Module Support Slave and Master Mode for Arduino : Electronics
![Amazon.com: ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino : Electronics Amazon.com: ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino : Electronics](https://m.media-amazon.com/images/I/51b93h9IMDL._AC_UF350,350_QL80_.jpg)
Amazon.com: ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino : Electronics
![Amazon.com: amomii UNO Microcontroller (Compatible with Arduino IDE), Coding and Hardware Tutorials, USB Type-C Connector, 3D Printable Accessories, Example Projects and Code, Higher Power Handling Capabilities : Electronics Amazon.com: amomii UNO Microcontroller (Compatible with Arduino IDE), Coding and Hardware Tutorials, USB Type-C Connector, 3D Printable Accessories, Example Projects and Code, Higher Power Handling Capabilities : Electronics](https://m.media-amazon.com/images/I/71hVuPvjrcL._AC_UF350,350_QL80_.jpg)
Amazon.com: amomii UNO Microcontroller (Compatible with Arduino IDE), Coding and Hardware Tutorials, USB Type-C Connector, 3D Printable Accessories, Example Projects and Code, Higher Power Handling Capabilities : Electronics
![Amazon.com: HiLetgo HC-06 RS232 4 Pin Wireless Bluetooth Serial RF Transceiver Module Bi-Directional Serial Channel Slave Mode for Arduino : Electronics Amazon.com: HiLetgo HC-06 RS232 4 Pin Wireless Bluetooth Serial RF Transceiver Module Bi-Directional Serial Channel Slave Mode for Arduino : Electronics](https://m.media-amazon.com/images/I/61US5GN8mUL.jpg)
Amazon.com: HiLetgo HC-06 RS232 4 Pin Wireless Bluetooth Serial RF Transceiver Module Bi-Directional Serial Channel Slave Mode for Arduino : Electronics
![Amazon.com: KEYESTUDIO Leonardo R3 Microcontroller Development Board with USB Cable Kit for Arduino Project : Electronics Amazon.com: KEYESTUDIO Leonardo R3 Microcontroller Development Board with USB Cable Kit for Arduino Project : Electronics](https://m.media-amazon.com/images/I/71bfvFmyL7L.jpg)
Amazon.com: KEYESTUDIO Leonardo R3 Microcontroller Development Board with USB Cable Kit for Arduino Project : Electronics
![Amazon.com: Adeept 4pcs 0.96 Inch OLED Module 12864 128x64 SSD1306 IIC I2C Serial Self-Luminous Display Board Compatible with Arduino Raspberry Pi and MCU(Blue) - Pins Soldered : Electronics Amazon.com: Adeept 4pcs 0.96 Inch OLED Module 12864 128x64 SSD1306 IIC I2C Serial Self-Luminous Display Board Compatible with Arduino Raspberry Pi and MCU(Blue) - Pins Soldered : Electronics](https://m.media-amazon.com/images/I/71blXKEqa2L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Adeept 4pcs 0.96 Inch OLED Module 12864 128x64 SSD1306 IIC I2C Serial Self-Luminous Display Board Compatible with Arduino Raspberry Pi and MCU(Blue) - Pins Soldered : Electronics
![Amazon.com: Serial Wombat 18AB I2C / UART Smart I/O GPIO and Analog Expander for Arduino (2 Pack, Black Label) : Electronics Amazon.com: Serial Wombat 18AB I2C / UART Smart I/O GPIO and Analog Expander for Arduino (2 Pack, Black Label) : Electronics](https://m.media-amazon.com/images/I/91lqqcB8j7L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Serial Wombat 18AB I2C / UART Smart I/O GPIO and Analog Expander for Arduino (2 Pack, Black Label) : Electronics
![Amazon.com: Seeed Studio XIAO SAMD21The Smallest Arduino Microcontroller Based on SAMD21,with Rich Interfaces, 100% Arduino IDE Compatible, desiged for Projects Need Arduino Micro, 1pc : Electronics Amazon.com: Seeed Studio XIAO SAMD21The Smallest Arduino Microcontroller Based on SAMD21,with Rich Interfaces, 100% Arduino IDE Compatible, desiged for Projects Need Arduino Micro, 1pc : Electronics](https://m.media-amazon.com/images/I/41f6dgNN-PL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Seeed Studio XIAO SAMD21The Smallest Arduino Microcontroller Based on SAMD21,with Rich Interfaces, 100% Arduino IDE Compatible, desiged for Projects Need Arduino Micro, 1pc : Electronics
![Amazon.com: HiLetgo 3pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible to Arduino Pro Micro Serial Connection with Pin Header : Electronics Amazon.com: HiLetgo 3pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible to Arduino Pro Micro Serial Connection with Pin Header : Electronics](https://m.media-amazon.com/images/I/71e9+R+zjkL._AC_UF894,1000_QL80_.jpg)
Amazon.com: HiLetgo 3pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible to Arduino Pro Micro Serial Connection with Pin Header : Electronics
![Amazon.com: WWZMDiB UNO R3 ATmega328P microcontroller CH340G Improved Version Development Board Compatible with Arduino IDE with USB Cable and 2.54mm Straight Pin Header : Electronics Amazon.com: WWZMDiB UNO R3 ATmega328P microcontroller CH340G Improved Version Development Board Compatible with Arduino IDE with USB Cable and 2.54mm Straight Pin Header : Electronics](https://m.media-amazon.com/images/I/71km5tpnC7L.jpg)
Amazon.com: WWZMDiB UNO R3 ATmega328P microcontroller CH340G Improved Version Development Board Compatible with Arduino IDE with USB Cable and 2.54mm Straight Pin Header : Electronics
![Amazon.com: AITRIP 3 Set IIC/I2C/TWI LCD 1602 16x2 Serial Interface Adapter Module Green Backlight for Arduino UNO R3 MEGA2560 (Green) : Electronics Amazon.com: AITRIP 3 Set IIC/I2C/TWI LCD 1602 16x2 Serial Interface Adapter Module Green Backlight for Arduino UNO R3 MEGA2560 (Green) : Electronics](https://m.media-amazon.com/images/I/71q3rsanVjL._AC_UF894,1000_QL80_.jpg)