keyestudio MEGA 2560 R3 development board + USB cable compatible for arduino MEGA 2560 R3

Description

I. Introduction:
There 54 groups of I/O (input/output ) digital ends (of which 14 group to do PWM output), 16 groups of simulation analogy input ends and 4 groups of UART (hardware serial ports) in it .
Because its bootloader, process can be downloaded directly with the USB and you don t need to use other external programmer.
And its power can be supplied by the USB, or the AC-to-DC adapter and battery can be also as an external power supply. Opening source code and using C language developed status in Java concept (cross platform) make a rapid growth of Arduino peripheral module and application.
The main reason to attract Artist to use Arduino is that they can quickly use all kinds of software communication such as Arduino language and Flash or Processing and so on. and make multimedia interactive works.
Development interface of Arduino IDE is based on the principle of opening source code, which you can download freely used in the thematic making, school teaching, television controlling, interactive works and so on.
2. Design 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.