You can regard it as the brain of your board. The function is the same as RESET button.Įach board has its own microcontroller. 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). It has 14 digital input/output pins D0-D13 (of which 6 can be used as PWM outputs). When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. There is a built-in LED driven by digital pin 13. Power up the control board, LED on, otherwise LED off.
#ARDUINO USB CH340 USB NOT FOUND SERIAL#
When control board communicates via serial port, send the message, TX led flashes. Onboard you can find the label: TX (transmit) When control board communicates via serial port, receive the message, RX led flashes. Onboard you can find the label: RX(receive ) When connecting to PC, program the firmware to ATMEGA328P-AU. In fact, slave the output devices under the SPI bus host. It is often called the SPI (serial peripheral interface) and can be considered an "extension" of output. ICSP is the AVR, an micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. ICSP (In-Circuit Serial Programming) Header Here is an explanation of what every element and interface of the board does: The power can be supplied through USB cable, port 5V, GND(DC 5V), as well as Vin GND (DC 7-12V).ġ4 (D0-D13) (of which 6 provide PWM output) The firmware of this chip is burnt well before delivery, therefore, you don’t need to burn the firmware. What’s more, you can burn the firmware for Atmega328P-Au through the built-in ICSP port. When using the Mini USB cable, we can use the VIN GND (DC 7-12V) to power. Since this chip we burn firmly in front of the factory, it is generally not available. The ICSP interface is used to burn firmware to Atmega328P-Au. It also has a 14 digital input / output interfaces (6 of which can be used as PWM output), 8 analog input interfaces, 1 16MHz crystal oscillator, 1 mini USB port, 1 ICSP interface, and a reset button.
#ARDUINO USB CH340 USB NOT FOUND DRIVER#
It is as same as the official Arduino Nano in addition to driver file and USB to serial chip (CH340G). The processor core of Keyestudio Nano CH340 is atmega328p-au.