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We love to hear from you, even for a bug report. All comments will be appreciated. Feel free to directly contact Uvindu chathuranga, the author of Mr.arduino at mrarduino5@gmail.com

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How to control servo motor with joystick and arduino

Materials:- Arduino uno Joystick Servo motor Jumper wires Diagram:- Connections:- Joystick VCC = Arduino 3.5V Joystick GND = Arduino GND Joystick URY(HOR) = Arduino Analog pin 0 Servo Yellow = Arduino Digital pin 7 Servo Red = Arduino 5V Servo Brown = Arduino GND Code:- #include <Servo.h> const int Y_pin = A0; // analog pin connected to Y output Servo myservo; int val; void setup() { myservo.attach(7); } void loop() { val = analogRead(Y_pin); val = map(val, 0, 1023, 0, 180); myservo.write(val); delay(15); }

How to measure distance with arduino

Materials:- Ultrasonic sensor LCD display 10k potrntiometer Jumper wire Diagram:- Connections:- Vss = Arduino GND VDD = Arduino 5V V0 = Potentiometer center pin RS = Digital pin 1 RW = Arduino GND E = Digital pin 2 D4 = Arduino digital pin 3 D5 = Arduino digital pin 4 D6 = Arduino digital pin 5 D7 = Arduino digital pin 6 A = Arduino 5V K = Arduino GND Ultrasonic GND = Arduino GND Ultrasonic 5V = Arduino 5V Ultrasonic Echo = Arduino digital pin 8 Ultrasonic trig = Arduino digital pin 9 Potentiometer left pin = Arduino 5V Potentiometer right pin = Arduino GND Code:- //https://mrarduinoprojects.blogspot.com #include <LiquidCrystal.h> // includes the LiquidCrystal Library LiquidCrystal lcd(1, 2, 3, 4, 5, 6); // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7) const int trigPin = 8; const int echoPin = 9; long duration; int distanceCm, distanceInch; void setup() { lcd.begin(16,2

How to use raindrop sensor using arduino

Materials:- Arduino uno Raindrop sensor LED * 1 Jumper wires diagram:- Connections:- Raindrop GND = Arduino GND Raindrop VCC = Arduino 5V Raindrop A0 = Arduino Analog pin 0 LED GND = Arduino GND LED 5V = Arduino Digital pin 13 Code:- //https://mrarduinoprojects.blogspot.com const int senmin = 0; const int senmax = 1024; int led = 13; int sensory = A0; int i; void setup() { Serial.begin (9600); pinMode(led, OUTPUT); } void loop() { int sensor = analogRead(sensory); int range = map(sensor, senmin, senmax, 0, 3); switch (range) { case 0: Serial.println("raining"); digitalWrite(led, HIGH); break; case 1: Serial.println("not raining"); digitalWrite(led,LOW); } delay(500); }

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