The code defines some constants (HIGH, LOW, OUTPUT, and INPUT) and three functions that are used to configure the DDRx, PORTx, and PINx registers that control the digital pins on an Arduino board.

Pin (DB4 – DB7) on the LCD to the digital pins 6, 5, 4, 3 of the Arduino. Pin 15 (LED) on the LCD to 5V pin on the Arduino. Pin 16 (LED) on the LCD to ground on the Arduino through the 200-ohm ...

void setup() is a function in which we initialize the pins of Arduino to be used as INPUT or OUTPUT. Baud Rate is also set in this function. Baud Rate is the communication speed of the microcontroller ...

Next, I defined the total number of LEDs, colour order of LED type, Arduino pin for data input, and push-button pins. #define NUM_LEDS 42 #define COLOR_ORDER RGB #define LED_PIN 6 #define MIN_PIN 4 ...

The Arduino Mega's PWM pins are digital output pins located on D2 to D13 and D44 to D46, coming to a total of 15. While they function as normal digital pins that can switch a component either ...

Connect the digital output pins of the Arduino (digital pins 8, 9, 10, and 11) to the appropriate input pins (IN1, IN2, IN3, and IN4) on the motor driver module. Connect the ENA and ENB pins of the ...

Output of timer pin 3 is connected to interrupt pin (pin 2) of Arduino. Pins 4 and 8 of the IC1 are connected to +5V connector of Board 1. R1 of 100k is connected between pins 8 and 7. IC1 shares the ...

Arduino Code for Digital Thermometer. The code for temperature measurement using LM35 is described here. A library for the LCD unit is included and then data and control pins for the LCD and ...

The Arduino Mega's PWM pins are digital output pins located on D2 to D13 and D44 to D46, coming to a total of 15. While they function as normal digital pins that can switch a component either ...