The Arduino Nano is a compact and versatile microcontroller board based on the ATmega328P microcontroller. It is a breadboard-friendly board that retains the functionalities of the larger Arduino boards but in a smaller form factor. The Nano is particularly popular in prototyping, educational contexts, and embedded system development due to its ease of use and extensive support community. Common applications include DIY electronics projects, robotics, sensor interfacing, and interactive artworks.
This circuit consists of an Arduino Nano microcontroller connected to a 0.96" OLED display. The Arduino Nano provides power to the OLED display and communicates with it using the I2C protocol via the A4 (SDA) and A5 (SCK) pins.
Open Project in Cirkit Designer
This circuit features an Arduino Nano microcontroller coordinating communication, navigation, and motion control functions. It includes modules for GSM, GPS, and digital compass capabilities, as well as a stepper motor for precise movement, all powered by a LiPo battery with voltage regulation.
Open Project in Cirkit Designer
This circuit consists of an Arduino Nano microcontroller with no external components connected. The provided code is a basic template with empty setup and loop functions, indicating that the circuit is likely intended for initial testing or development purposes.
Open Project in Cirkit Designer
This circuit consists of an Arduino UNO and an Arduino Nano, which communicate via Bluetooth modules. The Arduino Nano reads data from two flex sensors and an MPU-6050 accelerometer, sending the data to the Arduino UNO. The Arduino UNO controls three micro servos through a PCA9685 PWM driver, moving them back and forth.
Open Project in Cirkit Designer| Pin Number | Function | Description |
|---|---|---|
| 1 | RESET | Used to reset the microcontroller |
| 2-3 | D0/D1 (RX/TX) | Serial communication pins |
| 4-9 | D2-D7 | Digital I/O pins |
| 10-13 | D8-D11 (PWM) | Digital I/O with PWM capability |
| 14-15 | D12-D13 | Digital I/O pins (D13 is also connected to LED) |
| 16-23 | A0-A7 | Analog input pins or digital I/O |
| 24 | AREF | Analog reference voltage for the ADC |
| 25 | 3V3 | 3.3V output (derived from the FTDI chip) |
| 26 | D13 (LED) | Built-in LED connected to digital pin 13 |
| 27-30 | GND | Ground pins |
| 31-32 | 5V | 5V power supply from the USB or VIN pin |
| 33 | RST | Reset pin, can be used to reset the microcontroller |
| 34 | VIN | Input voltage to the Arduino board |
Powering the Board:
Connecting to a Breadboard:
Programming the Board:
Using Digital I/O:
pinMode(pin, mode);.digitalRead(pin);.digitalWrite(pin, value);.Using Analog Inputs:
analogRead(pin);.analogReference().Using PWM Outputs:
analogWrite(pin, value); to output PWM signals on pins 3, 5, 6, 9, 10, and 11.// The setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// The loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
Nano not recognized by computer:
Sketch not uploading:
Unexpected behavior in circuits:
Q: Can I use the Arduino Nano at 3.3V? A: The Nano operates at 5V, but it has a 3.3V output pin that can be used to power 3.3V components.
Q: How do I connect multiple voltage sensors to the Nano? A: Connect each sensor's output to a separate analog input pin on the Nano. Ensure that the sensors are compatible with the Nano's operating voltage.
Q: What is the maximum current the Nano can supply? A: The Nano can supply up to 40 mA from each I/O pin, with a maximum of 200 mA across all pins. The 3.3V pin can supply up to 50 mA.
For further assistance, consult the Arduino forums and the extensive online community resources.