Arduino Nano: Documentation, Features and FAQs

The Arduino Nano is a small, complete, and breadboard-friendly development board modeled after the Arduino Uno. It represents the culmination of over a decade of experience by Arduino in designing microcontroller boards for makers and educators.

At the heart of the Nano is the ATmega328P microcontroller, providing the same capabilities as the Uno in a smaller form factor. The ATmega328P features an 8-bit RISC-based architecture, running at 16 MHz with 32 KB of flash memory, 2 KB of SRAM and 1 KB of EEPROM.

Key specifications for the ATMEGA328P microcontroller:

The Nano provides 14 digital input/output pins and 8 analog input pins usable via sockets on a breadboard. 6 of the digital pins support PWM output. The Nano contains everything needed to support the microcontroller including a USB connection, power jack, reset button, and more. All necessary components are contained on a PCB measuring only 18x45mm.

Power can be provided via USB Mini-B connection, unregulated external power from 6-20V or regulated 5V power. The Nano is compatible with all Arduino shields designed for the Uno, Pro Mini or Mini. Extensive software support is provided via the Arduino IDE.

*As the official partner of Arduino, Utmel provides you with official original Arduino products. Welcome to shop at the page dedicated to Arduino products.

-Microcontroller: ATmega328 running at 16MHz

-Operating Voltage: 5V

-Digital I/O Pins: 14 (of which 6 provide PWM output)

-Analog Input Pins: 8

-DC Current per I/O Pin: 40 mA

-Flash Memory: 32 KB (ATmega328)

-SRAM: 2 KB (ATmega328)

-EEPROM: 1 KB (ATmega328)

-Clock Speed: 16 MHz

• Arduino Nano 33 BLE

• Arduino Nano 33 BLE SENSE

• Arduino 33 IoT

• Arduino Micro

The Arduino Nano and Arduino Nano 33 BLE are similar in terms of the number of I/O pins and their form factor. However, the Arduino Nano 33 BLE uses a more powerful microcontroller, has a higher clock speed, and more memory. It also operates at a lower voltage and uses a different type of USB connector.

-IoT and wearables

-Robotics

-Small sensor systems

-Miniature projects requiring a compact controller

-Education and prototyping

-Building small autonomous systems

-Enhancing projects requiring serial comms like I2C, SPI

Mini Weather Station using Arduino Nano

This project uses the Arduino Nano to create a mini weather station that can measure temperature, humidity, and atmospheric pressure.

Image source: projecthub.Arduino

Components Required:

1. Arduino Nano

2. DHT11 Temperature and Humidity Sensor

3. BMP180 Barometric Pressure Sensor

4. 16x2 LCD Display

5. Breadboard and Jumper Wires

Apps and platforms

Fusion 360

Arduino IDE

Connections:

1. Connect the DHT11 sensor's VCC to 5V on the Arduino Nano, GND to GND, and data pin to D2 on the Arduino.

2. Connect the BMP180 sensor's VCC to 5V on the Arduino Nano, GND to GND, SDA to A4 on the Arduino, and SCL to A5.

3. Connect the LCD display's VSS pin to GND, VDD to 5V, V0 to the middle pin of a 10k potentiometer (other pins connected to 5V and GND for contrast control), RS to D12, RW to GND, E to D11, D4 to D5, D5 to D4, D6 to D3, D7 to D2, A (backlight) to 5V, and K (backlight ground) to GND.

Arduino Code:

You'll need to include the DHT library, Adafruit BMP085 library, and the LiquidCrystal library in your Arduino IDE before uploading the following code:

C++
#include <Wire.h>
#include <Adafruit_BMP085.h>
#include <dht.h>
#include <LiquidCrystal.h>
#define DHT11_PIN 7
dht DHT;
Adafruit_BMP085 bmp;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup() {
  lcd.begin(16, 2);
  bmp.begin();
}
void loop() {
  int chk = DHT.read11(DHT11_PIN);
  lcd.setCursor(0,0); 
  lcd.print("Temp: ");
  lcd.print(DHT.temperature);
  lcd.print((char)223);
  lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print("Humidity: ");
  lcd.print(DHT.humidity);
  lcd.print("%");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Pressure: ");
  lcd.print(bmp.readPressure());
  lcd.print(" Pa");
  delay(2000);
  lcd.clear();
}

This code reads data from the DHT11 and BMP180 sensors and displays it on the LCD. The weather station will cycle between displaying temperature and humidity, and atmospheric pressure every 2 seconds. This mini weather station is a simple yet effective project that demonstrates the versatility of the Arduino Nano.

EAGLE FILES IN .ZIP SCHEMATICS IN .PDF BOARD SIZE IN .PDF