Arduino Sensor Reading and Display Tutorial
Learn how to read sensor values, display data on an LCD screen, and map temperature readings using Arduino in this comprehensive tutorial. Explore connections, programming, and sensor calibration for temperature readings in Celsius and Fahrenheit.
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Presentation Transcript
Lab 2: Arduino Sensors Lab 2: Arduino Sensors Topics: Arduino Sensor Reading, Display Date: Sept 2, 2016
References ( References (s study these) tudy these) https://www.arduino.cc/en/Tutorial/HelloWorld http://www.allaboutcircuits.com/projects/interface-an-lcd-with-an-arduino/ https://www.arduino.cc/en/tutorial/potentiometer https://learn.sparkfun.com/tutorials/sik-experiment-guide-for-arduino--- v32/experiment-7-reading-a-temperature-sensor 2
LCD Display LCD Display HW Setup It has 16 pins: 12 of them need to be connected to {Vcc, GND, potentiometer, and Arduino pins} HW Setup 1 2 3 4 5 VSS/ GND VCC/ +5 V0/ POT RS/ Pin 12 RW/ GND 6 7-10 11-14 15 16 E/ Pin11 D4-D7/ Pin2-Pin5 LED+/ Res+VCC LED-/ GND Potentiometer Resistor 3
LCD Display LCD Display Programming Programming Include the library and initialize. lcd.begin(COLS, ROWS); lcd.setCursor(COL, ROW); lcd.print( string ); lcd.print(FP_Num, 4); #include <LiquidCrystal.h> // initialize the library with the numbers of the interface pins LiquidCrystal lcd(12, 11, 5, 4, 3, 2); void setup() { // set up number of columns and rows: lcd.begin(16, 2); // Print a message to the LCD. lcd.print("hello, world!"); } void loop() { // set the cursor to column 0, line 1 lcd.setCursor(0, 1); // print the number of sec since reset: lcd.print(millis() / 1000); } 4
Temperature Sensor Temperature Sensor It has 3 pins. The middle one gives you sensor value [0, 1023] How do you map the value to voltage? Temp (C) = (Voltage 0.5) * 100 How do you get Temp (F)? val = analogRead(AnalogPin); 5
Lab 2 Lab 2 Read and Display Temperature Read and Display Temperature 6
