arduino comunication 

Comments

Post a Comment

Popular posts from this blog

2.Controlling LEDs with a Keypad and Arduino

Image
 Controlling LEDs with a Keypad and Arduino Components Needed: Arduino board 4x4 or 4x3 Keypad LEDs (e.g., 3 LEDs) Resistors (e.g., 220Ω for each LED) Jumper wires Breadboard (optional) Connections: Keypad : Connect the keypad pins to digital pins on your Arduino (e.g., rows to pins 9, 8, 7, 6 and columns to pins 5, 4, 3, 2). LEDs : Connect the LEDs to digital pins (e.g., LED1 to pin 13, LED2 to pin 12, LED3 to pin 11). Don’t forget to add a current-limiting resistor in series with each LED. Example Code: C++ Code # include <Keypad.h> const byte ROWS = 4 ; // Number of rows const byte COLS = 4 ; // Number of columns char keys[ROWS][COLS] = { { '1' , '2' , '3' , 'A' }, { '4' , '5' , '6' , 'B' }, { '7' , '8' , '9' , 'C' }, { '*' , '0' , '#' , 'D' } }; byte rowPins[ROWS] = { 9 , 8 , 7 , 6 }; // Connect to row pins of keypad byte colPins...
Read more

4.Displaying Weight and Force from an FSR on an I2C LCD using Arduino

 Displaying Weight and Force from an FSR on an I2C LCD using Arduino Circuit: FSR Setup : Connect one end of the FSR to 5V. Connect the other end of the FSR to an analog pin (e.g., A0) and a 10kΩ resistor. Connect the other side of the resistor to GND. I2C LCD Setup : Connect the LCD's SDA and SCL pins to the corresponding pins on the Arduino (usually A4 and A5 for Arduino Uno). Connect VCC to 5V and GND to GND. Code: Here's the code that reads the FSR value and displays the weight in grams and force in newtons on the LCD: C++ Code # include <Wire.h> # include <Adafruit_LiquidCrystal.h> Adafruit_LiquidCrystal lcd ( 0 ) ; // Initialize the I2C LCD (default I2C address 0x20) int fsrPin = A0; // Analog pin connected to FSR int fsrReading; // Variable to store the FSR reading float calibrationFactor = 0.5 ; // Calibration factor to convert FSR reading to weight in grams (example value) float weight; // Calculated weight in gr...
Read more

3.Light-Controlled Buzzer Using an LDR and Arduino

Image
 Light-Controlled Buzzer Using an LDR and Arduino Components Needed: Arduino board LDR (photoresistor) 10kΩ resistor Buzzer (active or passive) Breadboard and jumper wires Circuit Connections: LDR Circuit : Connect one leg of the LDR to 5V on the Arduino. Connect the other leg of the LDR to an analog input pin (e.g., A0) and a 10kΩ resistor. Connect the other end of the 10kΩ resistor to GND. Buzzer Circuit : Connect the positive pin of the buzzer to a digital pin (e.g., 9). Connect the negative pin of the buzzer to GND. Example Code: C++ Code int ldrPin = A0; // Analog pin for LDR int buzzerPin = 9 ; // Digital pin for buzzer int threshold = 500 ; // Threshold value for light level void setup () { pinMode (buzzerPin, OUTPUT); // Set buzzer pin as output Serial. begin ( 9600 ); // Start serial communication } void loop () { int ldrValue = analogRead (ldrPin); // Read LDR value Serial. println (ldrValue); // Print LDR value to Serial M...
Read more