KEYESTUDIO 10PCS Proto Shield for Arduino Mega, Double Sided PCB Prototype Shield Solderable for Arduino Mega R3 2560Product Description: KEYESTUDIO mega prototype pcb boards are solderable breadboards with the same size as our regular mege board, and with the same connections to pins and power rails. You can not only directly solder the component..

Keyestudio Leonardo R3 Microcontroller Development Board With Usb Cable Kit For Arduino ProjectSpecification Controller: ATmega32u4 Working frequency: 16 MHz Working voltage: 5V Input voltage (recommended): 7-12v Digital I/O port: 23 PWM channel: 7 Analog input: 12 Maximum allowable current of 5V digital/analog port: 40 mA Maximum allowable current..