![]() Supply power for control board and upload codeĬH340G, transform USB signals of computer to serial signals When Arduino board communicates via serial port and receive the message, RX led will flash. When Arduino board communicates via serial port and sends the message, TX led will flash LED is on when control board is plugged in power, otherwise, it will be off When D13 is high level, LED will be on when it is low level, LED will be off ![]() In fact, slave the output devices to the SPI bus host.When connecting to PC, program the firmware to ATMEGA2560-16AU. It is often called the SPI (serial peripheral interface) and can be considered an "extension" of the output. The AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. The MCU of this board is ATMEGA2560-16AU. ![]() Or used as digital output pin to drive different modules like LED, relay, etc. These pins can be configured as digital input pin to read the logic value (0 or 1). Have 54 digital input/output pins (of which 15 can be used as PWM outputs). RX responds to D0(digital port), TX responds to D1(digital port) Used to set the external reference voltage(0-5V)Ĭan be connected to press button, as same as reset button
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