Downloaded 38 times
MI
Uploaded byMakers of India
PPTX, PDF491 views
Programming with arduino
The document summarizes the basics of Arduino programming. It discusses that Arduino programs have three main parts: structure, values (variables and constants), and functions. It describes the setup() and loop() functions that enclose blocks of code. Setup() initializes variables and runs once, while loop() continuously runs the main program code. It also discusses defining variables, data types, and writing custom functions. Finally, it provides an example of blinking an LED using the Arduino by wiring an LED, resistor and running a program to turn the LED on and off.
More Related Content
Similar to Programming with arduino
More from Makers of India
Recently uploaded
Programming with arduino
- 1.
- 2. Arduino programscan be divided in threemain parts: STRUCTURE VALUES -VARIABLES-CONSTANTS FUNCTIONS
- 3.STRUCTURE The basicstructure of the arduino programming language is fairlysimple and runs in atleast two parts. These two required parts,or functions, enclose blocks of statement.
- 4.Setup()Setup() function iscalled when a sketch startsUse to initialize variables , pin modes , start usinglibraries etc…It will only run once,after each powerup or reset.So generally it is used to prepare your ardruino serialcommunication and pinmode().It must be included in program even if no lines are there.
- 5.Exampleint buttonPin =3;void setup(){Serial.begin(9600);pinMode(buttonPin, INPUT);}void loop(){// ...}
- 6.Loop()After calling thesetup() function, the loop() function doesprecisely what its name suggests, loops consecutively i.e it allows us to execute a statement or group ofstatements multiple times.Allows program to change, respond and control the Arduinoboard.
- 7.Examplevoid loop(){digitalWrite( pin,HIGH ); //turns ‘pin’ ondelay(1000); //pause for one seconddigitalWrite( pin ,LOW ); //turns ‘pin’ offdelay(1000); //pause for one second}
- 8.Variables A variableis a way of naming and storing a numerical value for later use. It can be continuously changed as opposed to constants whose value never changes. Data types says the size of variable. Eg: int a,b; The above statement declares a variable ‘a’ whose size can be of 16 bits. Initializations can be done while declaring or in further part of program. Eg: a=20; b=10 //initializing variablea=b; //changing variable value You can use same variable name in same program but it dependson scope of variable.
- 9.Functions A functionis a block of code that has a name and a block of statementsthat are executed when the function is called. Custom functions can be written to perform repetitive tasks and toreduce clutter in program. Functions are declared by first declaring the function type. Function type tells the type of value to be written by the function. Eg: int a() //for integer type to be returned If no values is to be returned the function type would be void. After name of function name we pass can parameters of function inparenthesis.
- 10.Exampleint delayVal(){int v;//create temporary variable ‘v’v = analogRead(pot); //read potentiometer valuev /= 4; //converts 0-1024 to 0-255return v; //return final value}
- 11.Basic Functions OfArduinoDigital I/OpinMode()digitalWrite()digitalRead()Analog I/OanalogReference()analogRead()analogWrite() - PWMTimemillis()micros()delay()delayMicroseconds()
- 12.LED BLINKDescription:In thislesson we will,1. Build and wire a device with one LED, resistor, andArduino board.2. Program the device to “Blink the Light”3. Identify the flow of electricity / signal in this computing unit.4. Use the Blockly Programming system to control speed ofBlink.
- 13. You willneed: 1. LED Light Bulb (Any Colour) 2. 330 Ohm Resistor 3. Red Wire 4. White Wire 5. Black (Or dark colored Wire)
- 14.Process:1. Run ared Wire from the 5V Pin to the Red Rail on theBreadboard. This will connect the current side of thecircuit. 2. Run a black (or dark coloured wire) from the Gnd Pin ofthe Arduino to the Blue Rail on the far side of theBreadboard.
- 16. 3. Plugan LED bulb into the circuit. Note that the longer pin will face theArduino Board and the pins should cross the “gap” in the breadboard. 4. This step is VERY IMPORTANT!!! Plug a 330 OHM resistor from Port B5to Ground (The blue rail). An LED bulb must ALWAYS have a Resistor in the circuit. If we do not use aResistor, we will burn out the bulb or the Arduino
- 17.5. Now wewill run the signal wire. Wire Pin 13 on theArduino to the Breadboard. This will carry the current fromthe Arduino Pin to the LED and allow the Arduino to switchon and off the LED.
- 18.Sketch Programming:1. Startyour Arduino Sketch Program by clicking onthe Sketch Icon.2. Save the code by selecting “File-Save” andnaming the program “lastnameBlink”.