KEYESTUDIO Mega 2560 Board for Arduino +USB Cable

Introduction:
keyestudio Mega (core to ATmega2560) is a development board (used with16MHz crystal oscillator ) of microcontroller. There are 54 I/O (input/output ) digital interfaces (of which 15 are PWM outputs), 16 analog inputs and 4 UART (hardwareserial ports). With its bootloader, program can be downloaded directly with USB and you don't need to use other external programmer. It can be powered directly by USB, or AC-to-DC adapter and battery.

2Design of Power Supply :
There are two choices (direct power supply trough USB or external power supply) for the power supply system of Arduino Mega, and they can be Automatic switched.
External power supply can be AC-to-DC adapter or battery.
Lit rang of voltage of this control board is 6V~12V, but if the supplied voltage is greater than 12V, the voltage stabilizing device will be likely overheated and overheat protection and damaging Arduino MEGA will be more likely to occur.
So we suggest the power supply should be 6.5~12V in operation and recommended supply is 7.5 or 9V.

Specifications
Microcontroller:ATmega2560
OperatingVoltage:5V
Input Voltage (recommended):7-12V
Digital I/O Pins54 (of which 15 provide PWM output)
Analog Input Pins:16
DC Current per I/O Pin:20 mA
DC Current for 3.3V Pin:50 mA
256 KB of which 8 KB used by bootloader
SRAM: 8 KB
EEPROM:4 KB
Clock Speed:16 MHz

Original Packaging Includes
1 x KEYESTUDIO Mega 2560 R3 Board
1 x USB Cable

• KEYESTUDIO 3D Printer Controller RAMPS 1.4 REPRAP Mendel PRUSA for Arduino Mega
• KEYESTUDIO MEGA Sensor Shield V1 for Arduino MEGA 2560 R3
• KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet
• KEYESTUDIO MEGA Protoshield V3 for Arduino Mega 2560 with Mini Breadboard, and Easy to Use
• Elegoo MEGA 2560 R3 Board ATmega2560 ATMEGA16U2 + USB Cable for Arduino RoHS Compliant
• HiLetgo RAMPS 1.4 Control Panel 3D Printer Control Board Reprap Control Board Support Arduino Mega 2560
• KINGPRINT Ramps 1.6 Expansion Control Panel with Heatsink Upgraded Ramps 1.4/1.5 for 3D Printer Board
• ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Wires Ribbon Cables Kit for arduino
• BIQU A4988 Compatible Stepper StepStick Motor Diver Module with Heat Sink for 3D Printer Controller Ramps 1.4(Pack of 5pcs)
• KINGPRINT DRV8825 Stepper Motor Driver Module with Heat Sink for 3D Printer Rrerap Ramps 1.4 A4988 (Pack of 5pcs)