ARDUINO NANO V3.0 CH340G/ATmega328

ARDUINO NANO V3.0 CH340G is a miniature Arduino board. Most often, ARDUINO NANO is used to create compact projects due to its overall dimensions. ARDUINO NANO V3.0 CH340G is an analogue of the popular NANO V3.0 FT232RL board.

The ARDUINO NANO V3.0 device is designed based on the ATmega328P microcontroller. ATmega328P controller parameters: 32 KB FLASH, 2 KB RAM and 1 KB EEPROM. The ATmega328P microcontroller has 32 pins and is made in a TQFP 32A package.

The difference between the ARDUINO NANO V3.0 CH340G board and its analogue is the modified circuit of the USB port converter. In the ARDUINO NANO V3.0 CH340G device, the built-in bootloader and the USB interface to COM port converter are based on the CH340G chip. This chip makes it possible to update the software without the use of programmers. If necessary, the device software can be updated usingUSB - UART CH340or any other converter.

There are 4 LEDs on the body of the device:

POW: informs about the power supply to the board
L: Lights up when potential is high on digital pin 13
RX: flashes when there is a high level signal on pin 0
TX: flashes when there is a high level signal on pin 1
The ATmega328P microcontroller allows serial UART communication using the RX and TX digital pins. The controller also supports I2C and SPI serial interfaces. The CH340G chip provides communication between the transceiver and the USB port of the PC. The following pins can be used as PWM pins: 3, 5, 6, 9, 10, and 11.

There are 30 pins on the ARDUINO NANO V3.0 CH340G board:

3V3 (17): power supply from CH340G chip
+5V (27): input for external stabilized 5V power supply
VIN (30): unregulated voltage supply 7 - 12 V
GND (4, 29): ground
AREF (18): ADC reference voltage
RESET (3, 28): reset
D0-D13 (1, 2, 5 - 16): digital inputs/outputs
A0 - A7 (19 - 26): analogue inputs
To write software for ARDUINO NANO, the Arduino IDE development environment is used.

The device can be powered by a 5V USB cable or an external 7V to 12V power supply connected to the VIN pin.

Pin connectors are included.

If you are unable to upload the sketch, go to the Arduino IDE program and select the Arduino Nano board in the Tools tab. After that, in the same tab, you will be able to select "processor: ATmega328P". You need to select not "ATmega328P", but "ATmega328P (Old Bootloader)" and repeat the download.