Arduino Nano Micro-Controller ATMEGA328P

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Arduino Nano Micro-Controller ATMEGA328PThe Nano V3.0 micro-controller is a small, complete, micro-controller board based on the ATmega328P MCU, inspired by the Arduino Nano. It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and uses a Mini-B USB cable instead of a standard one. It is compatible with Arduino programs and the Arduino IDE. 

It can be powered via the Mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.

 Specifications:

  • CH340G USB bus convert chip replaces FT232RL
  • Operating Voltage(logic level): 5V
  • 8 analog inputs ports: A0 – A7
  • 14 Digital input / output ports: TX, RX, D2 – D13
  • 6 PWM ports: D3, D5, D6, D9, D10, D11
  • 1 pairs of TTL level serial transceiver ports: RX / TX
  • Uses Atmel Atmega328P-AU MCU with bootloader installed
  • Support USB download and Power
  • Recommended input voltage: 7V – 12V DC on pin 30 or 5V on pin 27
  • Maximum input voltage limits: 6V – 20V
  • Supports ISP download
  • Supplied with connector pins (headers), not soldered to the board for user flexibility

Resources, Guides and Additional Documentation:

Getting Started with Arduino: http://envistia.info/ardgetstarted

Arduino Software (IDE) download link:  http://envistia.info/arduinoide

Arduino Nano Documentation: http://envistia.info/arduino-nano 

The CH340G USB drivers may need to be installed on your computer before using this Nano board with the Arduino IDE. If the Arduino IDE cannot communicate with your board, it is probably because the CH340G driver is not installed on your computer.

To install the CH340G driver on your computer:

The CH340 USB IC is made by WCH. You can find the latest version of their drivers in their English translated website here:

http://www.wch-ic.com/downloads/CH341SER_ZIP.html

Click on the “download” button on the WCH page to download the ch341ser.zip file to your computer.

Unzip (extract) the ch341ser.zip file.

Run the Setup application in the CH341SER folder of the unzipped file. See the screenshot below:

Click the “Uninstall” button first to remove any old versions, then click on the “Install” button.

CH340G Driver Verification for Windows:

To verify that your CH340G driver is working, you should see a difference in the Windows Device Manager and Arduino IDE Ports after plugging the Arduino board with a CH340 into a USB port on your computer.

Device Manager

To check that the CH340 associates to a COM port, open the Windows Device Manager. You can click the Start or ⊞ (Windows) button and type “device manager” to search for the application.

After opening the Device Manager, you will need to open the Ports (COM & LPT) tree. The CH340 should show up as USB-SERIAL CH340 (COM##). Depending on your computer, the COM port may show up as a different number.

Arduino IDE

If you have the Arduino IDE installed, you should also see a change in the number of available COM Ports (you may need to restart the Arduino IDE for the board to populate). Without the CH340 connected to your computer, in the IDE click on Tools > Port. Take note of the Serial Ports available:

Connect the Arduino board with the CH340 to your computer’s USB port. Click somewhere else on the screen for the menu to refresh itself. Then go back to Tools > Port. A new COM port should appear. By process of elimination, the CH340 should have associated to the new COM port. Select this COM port in order to connect the IDE to your Arduino board.

In the example shown in these two screen shots, the new Arduino CH340 board is associated to COM Port 3.

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