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How to measure heart rate using pulse sensor with Arduino

December 31, 2020

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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 use soil moisture sensor using LCD display with arduino

Materials:- Arduino uno = https://bit.ly/30v5XcY LCD display = http://bit.ly/37SLuRJ Soil moisture sensor = http://bit.ly/2I6nGiS Diagram:- Connections:- LCD display to arduino Vss = Arduino GND VDD = Arduino 5V V0 = Potentiometer center pin RS = Digital pin 8 RW = Arduino GND E = Digital pin 6 D4 = Arduino digital pin 5 D5 = Arduino digital pin 4 D6 = Arduino digital pin 3 D7 = Arduino digital pin 2 A = Arduino 5V K = Arduino GND Potentiometer to arduino Left pin = Arduino GND Right pin = Arduino 5v center pin = Display VO Soil moisture sensor to arduino Sensor VCC = Arduino 3.5V Sensor GND = Arduino GND Sensor AO = Arduino A0 Downloads:- LCD display library(LiquidCrystal.h) = http://bit.ly/2VeF5xt Code :- #include <LiquidCrystal.h> LiquidCrystal lcd(8, 6, 5, 4, 3,2); int sensorPin = A0; int sensorValue = 0; int percentValue = 0; void setup() { Serial.begin(9600); lcd

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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