Arduino Tutorials and More

Adjustable Voltage Regulator 317T Parts List: 1) LM317T 2) 10uF 3) 0.1uF 4) 240 ohm 5) 50k variable resistor 6) Socket Tools : 1) Solder Iron 2) Solder Paste 3) Rojon Now put your LM317T on your breadboard pin 1 is adjustable voltage, pin 2 output voltage pin 3 is input voltage positive part of the 10uF capasitor should be connected with pin 1 and a 0.1uF capasitor will be connected with pin 3. The positive part of the 0.1uF capasitor should be connected with pin3. and rest of the pin of capasitor is ground. 220 ohm resistor is connected between ground and pin 2. Wiper pin of variable resistor should be connected to pin 1.

LM35 Temparature Sensor With Arduino : Its quite an easy project...Lets Start It... Just connect the LM35 sensor to the arduino and run the code below... CODE : //TMP36 Pin Variables int sensorPin = 0; //the analog pin the TMP36's Vout (sense) pin is connected to //the resolution is 10 mV / degree centigrade with a //500 mV offset to allow for negative temperatures /* * setup() - this function runs once when you turn your Arduino on * We initialize the serial connection with the computer */ void setup() { Serial.begin(9600); } void loop() { int reading = analogRead(sensorPin); // converting that reading to voltage, for 3.3v arduino use 3.3 float voltage = reading * 5.0; voltage /= 1024.0; // print out the voltage Serial.print(voltage); Serial.println(" volts"); // now print out the temperature float temperatureC = (voltage - 0.5) * 100 ; Serial.print(temperatureC); Serial.println(" degrees C"); // now conve

5V Linear voltage Regulator 1A Parts List : 1) LM7805 2) 100 nF (ceramic capasitor) 3) 10 uF (electrolite capasitor) 4)100  uF (electrolite capasitor) 5)Breadboard (optional) 6)Vero Board 7) Solder Iron 8) Solder Paste etc.. https://www.instructables.com/id/DIY-5V-Linear-Regulator/ Now put your LM7805 on your breadboard pin 1 is input voltage pin 2 ground pin 3 is output voltage positive part of the 10uF capasitor should be connected with pin3 and a 100nF capasitor will connected with this in parallel. Then the positive part of the 100uF capasitor should be connected with pin1. The circuit is done.

                              4x4 Keypad Pinout/Diagram Arduino to Keypad Connection Diagram After connecting as shown here we need to upload a code on our arduino. Here's the  Code : #include <Keypad.h> const byte numRows= 4; //number of rows on the keypad const byte numCols= 4; //number of columns on the keypad char keymap[numRows][numCols]= { {'1', '2', '3', 'A'}, {'4', '5', '6', 'B'}, {'7', '8', '9', 'C'}, {'*', '0', '#', 'D'} }; byte rowPins[numRows] = {9,8,7,6}; //Rows 0 to 3 byte colPins[numCols]= {5,4,3,2}; //Columns 0 to 3 //initializes an instance of the Keypad class Keypad myKeypad= Keypad(makeKeymap(keymap), rowPins, colPins, numRows, numCols); void setup() { Serial.begin(9600); } //If key is pressed, this key is stored in 'keypressed' variable /