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Get your hands dirty with ArduinoSavio Dimatteo
Heidelberg Web Enthusiasts Meetup - 10 Dec 2014
Arduino
Arduinofrom http://arduino.cc
“Arduino is an open-source electronics platform based on easy-to-use hardware and
software. It's intended for anyone making interactive projects.”
IDE
+Board
Making a project
1. wire components on a breadboard and
connect them to arduino I/O pins
2. write code into the IDE to read/write from/to
Arduino pins
Making a project
Making a project
3. compile & upload code into a chip on the
board machine code
Many Models
Many Models
Parameters
● Input voltage
● CPU Speed
● # Analog I/O pins
● # Digital I/O pins
● FLASH capacity
● EEPROM capacity
● SRAM capacity
● USB interface
● UART
Many Specs
Parameters
● Input voltage
● USB interface
● UART
Many Specs
Cost: ~4€
Arduino UNOCost: ~25€
Arduino shields
Arduino IDE
● language is an implementation of Wiring
● syntax looks like a mix of Java/C/C++
● feels almost like a scripting language...
● code preprocessed into C++
● compiled and linked against Arduino libraries
● machine code into a file ready for upload
Arduino code
● write code
● compile
● connect Arduino via USB
● upload
● see if it works
Typical workflow
● write code using Serial.print(...)
● compile
● connect Arduino via USB
● upload
● open serial monitor
● see if it works, check serial monitor output
Debugging
Get started
http://www.instructables.com/http://www.google.com
http://playground.arduino.cc
● Arduino Projects Book● Arduino UNO● USB cable● Breadboard● Wooden Base● 9v battery snap● Wires● Photoresistors, potentiometers, pushbuttons,
sensors, LCD display, LEDs, Transistors, Optocouplers, Piezo, Small Motors, Diodes, Resistors...
Starter kit (~100€)
Blink
Uploading blink
Blink uploaded
Hello, World!
Hello, World!
● 01 GET TO KNOW YOUR TOOLS an introduction to the concepts you'll need to use this kit
● 02 SPACESHIP INTERFACE design the control panel for your starship
● 03 LOVE-O-METER measure how hot-blooded you are
● 04 COLOR MIXING LAMP produce any color with a lamp that uses light as an input
● 05 MOOD CUE clue people in to how you're doing
● 06 LIGHT THEREMIN create a musical instrument you play by waving your hands
● 07 KEYBOARD INSTRUMENT play music and make some noise with this keyboard
● 08 DIGITAL HOURGLASS a light-up hourglass that can stop you from working too much
● 09 MOTORIZED PINWHEEL a colored wheel that will make your head spin
● 10 ZOETROPE create a mechanical animation you can play forward or reverse
● 11 CRYSTAL BALL a mystical tour to answer all your tough questions
● 12 KNOCK LOCK tap out the secret code to open the door
● 13 TOUCHY-FEEL LAMP a lamp that responds to your touch
● 14 TWEAK THE ARDUINO LOGO control your personal computer from your Arduino
● 15 HACKING BUTTONS create a master control for all your devices!
Projects book
What did I do with Arduino
Got rid of IDE
● mkdir blink && cd blink && ino init
● vim src/sketch.ino
● … edit … save ...
● :!ino build
● :!ino upload
● :!ino serial (optional)
My first project
● hardest hardware part:
insert a straw at the base of a bottle
Trampolino
● hardest hardware part:
insert a straw at the base of a bottle
● hardest software part:
try to be precise when pouring the same
amount of water...
Trampolino
● water doesn’t flow at a constant rate!
Problem
How many seconds to
pour for, to get the same
unit of water out of the
straw?
Problem
I. measure flow rate
II. estimate pressure
Possible Solution
Detecting watervoid setup() { pinMode(9, INPUT);}
void loop() { if (digitalRead(9) == LOW) { // water detected! }}
“Time through straw”
Curve fitting
On Facebook...
● very easy to get started
● time consuming
● exciting
● expensive
● generally not dangerous
Conclusions
Get your hands dirty with Arduino
Thank You● My Website: http://www.savio.dimatteo.it
● GitHub: https://github.com/darksmo
● Twitter: @darksmo
● E-mail: [email protected]
● Trampolino: http://darksmo.github.io/arduino-trampolino/
● Arduino playground: http://playground.arduino.cc
