The Signal Routing (SR) Port, is a peripheral that allows for flexible connections of other PIC® microcontroller peripherals without the need for dedicating Input/Output (I/O) pins and routing wires.

int mq2SensorPin = A0; // Analog pin for MQ2 sensor connected to A0 of Arduino int buzzerPin = 8; // Pin connected to the buzzer int ledPin = 10; // Pin connected to the LED int servoPin = 9; // Pin ...

You can use the DHT22 (or AM2302) humidity/temperature sensor and the Arduino UNO board to read data and print it out to the serial monitor or to display it on an LCD ...