Arduino 101
4 likes1,541 views
The document is a presentation by Giorgio Aresu about the Arduino platform, detailing its features, uses, and programming capabilities. It covers the differences between microcontrollers and microprocessors, explains why Arduino is a popular choice for prototyping, and includes examples of projects. The text also includes technical specifications, connections, and resources for further information.
![Base sketch structure
// Libraries
#include <SPI.h>
#include <SD.h>
// Global variables
File myFile;
// One time initialization function
void setup()
{
Serial.begin(9600);
Serial.print("Initializing SD card...");
// [...]
}
// Endless loop function
void loop()
{
// [...]
}
void setup()
initialize system
void loop()
contains all logic](https://image.slidesharecdn.com/arduino101-151210125806/85/Arduino-101-24-320.jpg)
Arduino 101
- 1. Arduino 101 Giorgio Aresu Bologna, December 2, 2015
- 2. Who am I void setup() { Serial.begin(9600); } void intro() { Serial.println("First name:_______________________________________Giorgio"); Serial.println("Last name:__________________________________________Aresu"); Serial.println("I am:__________________________________Computer Scientist"); Serial.println("Working in:_______________________________SCAI Consulting"); Serial.println(" ( '_')0*´¯`·_¸_·´¯`°Q('_' ) "); Serial.println("Twitter:___________________________________@giorgio_aresu"); Serial.println("LinkedIn:___________________________________Giorgio Aresu"); Serial.println("Personal email:____________________giorgioaresu@gmail.com"); Serial.println("Work email:___giorgio.aresu@scai-consulting.grupposcai.it"); Serial.println("Interests:_________motorcycles,technology,electronics,IoT"); } void loop() { intro(); delay(1000); }
- 3. What is it? Open-source prototyping platform Based on Atmel 8-, 16- or 32-bit AVR microcontrollers Standard connectors to connect and stack shields Pre-programmed with a bootloader that simplifies uploading of programs to the on-chip flash memory More straightforward by allowing the use of an ordinary computer as the programmer.
- 4. What for - Domotics - Alarm systems, motion detection - Weather stations - Wearables - Sensor networks - Robots and drones - Retro-gaming, LED controllers, etc. Some use cases
- 7. The Inebriator - Cocktail machine http://www.theinebriator.com/
- 9. Microcontroller or Microprocessor? Microcontroller (MCU) Contains a processor core, memory, and programmable input/output peripherals. Designed for application-specific, embedded applications (remote controls, appliances, toys). Cheaper, smaller, lower power consumption (as low as nanowatts), optimized for latency. Microprocessor Only contains a CPU, has no memory and uses all pins as a bus. Multipurpose programmable processing unit. Faster, more versatile, suitable for complex tasks, optimized for throughput.
- 10. Why Arduino? 1. Inexpensive 2. Cross-platform 3. Simple programming environment 4. Open source and extensible software 5. Open source and extensible hardware
- 11. Uno Mega Nano Gemma Pro Mini Lots of models and many more...
- 13. Main connections USB 5v regulated input Vin 5-9v or 5-12v (depending on board) unregulated input IOREF Board I/O voltage, Uno supplies 5v, Due 3.3v GND IOREF RESET 3.3V 5V GND GND Vin USB Vin Pay attention to power limits on all pins, you may damage your board! RESET
- 14. I/O Pins Digital I/O Standard 1/0 levels 5 volts Analog Input 10-bit ADC 0-5 volts adjusted via AREF Can be used as Digital I/O Digital Analog AREF
- 15. I/O Pins Serial Used as a console and to communicate to other TTL devices TX RX USB Example: - ESP8266 (WiFi module)
- 16. I/O Pins External interrupts Can be configured to trigger an interrupt on a signal state change Example: - PIR (IR movement sensor) PIN 2 PIN 3
- 17. I/O Pins Pulse Width Modulation 8-bit PWM output, can simulate analog output Example: - Light Dimmer - Motor speed control PIN 5 PIN 3 PIN 6 PIN 9 PIN 11 PIN 10
- 18. I/O Pins SPI Serial bus used to connect multiple devices and to flash the MCU itself, bypassing the bootloader Single master, one or more slaves (one SS line per slave) Example: - Barometric Pressure Sensor - AD5206 (Digital Potentiometer) - LCD/OLED Displays - ICSP SCK MISO MOSI SS ICSP ICSP
- 19. I/O Pins I2 C Bus used to attach multiple peripherals Slower than SPI but only requires 2 lines and scales better with multiple devices Example: - EEPROM Modules - TMP102 (Temperature sensor) - LCD/OLED Displays SDA SCL
- 20. IDE
- 21. IDE - Official ➔ Simple and lightweight ➔ Cross-platform
- 22. IDE - Visual Micro ➔ Visual Studio plugin ➔ Intellisense and autocomplete ➔ Windows only
- 23. IDE - Scratch ➔ Alternative language ➔ Event driven programming ➔ Cross-platform
- 24. Base sketch structure // Libraries #include <SPI.h> #include <SD.h> // Global variables File myFile; // One time initialization function void setup() { Serial.begin(9600); Serial.print("Initializing SD card..."); // [...] } // Endless loop function void loop() { // [...] } void setup() initialize system void loop() contains all logic
- 25. Demo time!
- 26. Blink sketch - Software void setup() { // initialize digital pin 13 as an output pinMode(13, OUTPUT); } void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second }
- 27. Blink sketch - Hardware
- 28. BT controlled appliance #define RELAY 8 void setup() { // Open serial communications and wait for port to open Serial.begin(9600); // initialize digital pin as an output. pinMode(RELAY, OUTPUT); digitalWrite(RELAY, HIGH); Serial.println("Up and running"); } void loop() { while (!Serial.available()) {} // Wait for connection int i = Serial.parseInt(); if (i == 2) digitalWrite(RELAY, LOW); else if (i == 1) digitalWrite(RELAY, HIGH); else if (i == 4) digitalWrite(RELAY, !digitalRead(RELAY)); // Invert state }
- 31. Questions? You can find software, documentation, forum, and support the project at https://www.arduino.cc/ Giorgio Aresu Bologna, December 2, 2015