![Amazon.com: ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects, RoHS Compliant: Industrial & Scientific Amazon.com: ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects, RoHS Compliant: Industrial & Scientific](https://images-na.ssl-images-amazon.com/images/I/815k0WXLkQL._SL1500_.jpg)
Amazon.com: ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects, RoHS Compliant: Industrial & Scientific
![Arduino Uno Rev3, microcontroller Board Based on The ATmega328, 8-bit microcontroller with 32KB of Flash Memory and 2KB of RAM, 14 Digital Input/Output pins, 6 Analog inputs, a 16 MHz Crystal oscillator: Arduino Uno Rev3, microcontroller Board Based on The ATmega328, 8-bit microcontroller with 32KB of Flash Memory and 2KB of RAM, 14 Digital Input/Output pins, 6 Analog inputs, a 16 MHz Crystal oscillator:](https://images-na.ssl-images-amazon.com/images/I/71HEK8xIQ8L._SX425_.jpg)
Arduino Uno Rev3, microcontroller Board Based on The ATmega328, 8-bit microcontroller with 32KB of Flash Memory and 2KB of RAM, 14 Digital Input/Output pins, 6 Analog inputs, a 16 MHz Crystal oscillator:
![Amazon.com: Organizer for Nano I/O Expansion Sensor Shield Module for Arduino UNO R3 Nano V3.0 / Nano Pro Compatible UNO R1 Duemilanove 2009 (5pcs): Computers & Accessories Amazon.com: Organizer for Nano I/O Expansion Sensor Shield Module for Arduino UNO R3 Nano V3.0 / Nano Pro Compatible UNO R1 Duemilanove 2009 (5pcs): Computers & Accessories](https://images-na.ssl-images-amazon.com/images/I/71F2dpqUTLL._AC_SL1009_.jpg)
Amazon.com: Organizer for Nano I/O Expansion Sensor Shield Module for Arduino UNO R3 Nano V3.0 / Nano Pro Compatible UNO R1 Duemilanove 2009 (5pcs): Computers & Accessories
![Amazon.com: ZkeeShop 5PCS Expansion Sensor Shield Module Compatible for Arduino UNO R3 Nano V3.0 Nano I/O: Computers & Accessories Amazon.com: ZkeeShop 5PCS Expansion Sensor Shield Module Compatible for Arduino UNO R3 Nano V3.0 Nano I/O: Computers & Accessories](https://images-na.ssl-images-amazon.com/images/I/71FYVrnfldL._AC_SY355_.jpg)