Security-01 9V 1A Power Supply Adapter, DC Jack Center Positive, Plug 5.5mm x 2.1mm, for Arduino UNO, Nixie Tube Clock, Schwinn Elliptical Machine and more (Pack of 2)

Security-01 9V 1A Power Supply Adapter, DC Jack Center Positive, Plug 5.5mm x 2.1mm, for Arduino UNO, Nixie Tube Clock, Schwinn Elliptical Machine and more (Pack of 2)

Arduino Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping

Arduino Mega 2560 REV3 [A000067] – ATmega2560, 16MHz, 54 Digital I/O, 16 Analog In, 256KB Flash, USB, Arduino IDE Compatible for Advanced Projects & Prototyping