1. UTA010 : Engineering Design – II
Mangonel/Catapult Design Project
Lecture 1
Amanpreet Kaur
Copyright 2013-­‐2014
Electronics and Communication Engineering Department

2. What is an Arduino? Features 14 Digital I/O pins 6 Analogue inputs
6 PWM pins
USB serial
16MHz Clock speed
32KB Flash memory
2KB SRAM
1KB EEPROM
By Sebastian Goscik for EARS

3. Arduino Uno

4. Getting Started Check out: http://arduino.cc/en/Guide/HomePage
Download & install the Arduino environment (IDE)(not needed in lab)
Connect the board to your computer via the USB cable
If needed, install the drivers (not needed in lab)
Launch the Arduino IDE
Select your board
Select your serial port
Open the blink example
Upload the program

5. Arduino IDE
See: for more information

6. Select Serial Port and Board

7. EXAMPLE

8. Inside a Light Emitting Diode
                                                                                                                                                                                                                                       
Transparent Plastic Case
Terminal Pins
Diode

9. Kinds of LEDs

10. How to Connect a LED:
Requires 1.5~2.5V and 10 mA
To prevent overloading, use resistor 470 Ω

11. LEDs
By Sebastian Goscik for EARS

12. Connect LED to BS2
LED is on when P0 is high
LED is on when P1 is low

13. External LEDs
Try make an LED pin blink in a pattern on a pin of your choice

14. Structure of an Arduino “sketch”
void setup() { // put your setup code here, to run once: } void loop() { // put your main code here, to run repeatedly:
Before you show the NB, switch to desktop view and do it together with them
NB: A copy of this can be found in File>Examples>1. Basics>BareMinimum
By Sebastian Goscik for EARS

15. Important functions Serial.println(value); pinMode(pin, mode);
Prints the value to the Serial Monitor on your computer
pinMode(pin, mode);
Configures a digital pin to read (input) or write (output) a digital value
digitalRead(pin);
Reads a digital value (HIGH or LOW) on a pin set for input
digitalWrite(pin, value);
Writes the digital value (HIGH or LOW) to a pin set for output

16. first sketch
int onBoardLED; void setup() { //Arduinos have an on-board LED on pin 13 onBoardLED = 13; pinMode(onBoardLED, OUTPUT); } void loop() { digitalWrite(onBoardLED, HIGH); delay(500); //delay measured in milliseconds digitalWrite(onBoardLED, LOW); delay(500);
Explain then show programming
Dissect the code line by line:
Void = return type of the function. Tell them we will go into functions more later
Setup = fuction name
Int onBoardLED = 3 = A whole number variable called onBoardLED and we assign the value 13. This is like a name for a number much like algebra
; < must go on the end of every line that isn’t a function definition
pinMode =
digitalWrite =
Comment =
Delay =

17. Breadboard
Breadboard get their name from old circuits that where made by putting copper nails into bread cutting boards and wire was wrapped around them
By Sebastian Goscik for EARS

18. Example Using LED void setup() {
pinMode(77, OUTPUT); //configure pin 77 as output }
// blink an LED once
void blink1()
digitalWrite(77,HIGH); // turn the LED on
delay(500); // wait 500 milliseconds
digitalWrite(77,LOW); // turn the LED off