Vom Widerstand Zum Arduino

Vom Widerstand zum Arduino
Mobile Tech Conference 2014
18.03.2014, Lars Gregori, msgGillardon AG

© 2014 Lars Gregori, msgGillardon AG | Vom Widerstand zum Arduino | 18.03.2014
Lars Gregori
 Kommunikationselektroniker (Funktechnik)
 Informatik Fachrichtung Wirtschaft (FH)
 Softwareentwickler (Java Enterprise)
 Arduino
2

Widerstand
 Schaltbild
5

Widerstand
 Schaltbild
 Ohmsches Gesetz
 R = U / I [Ohm]
 I = U / R [Ampere]
 U = R * I [Volt]
6

Widerstand
 Schaltbild
 Ohmsches Gesetz
 R = U / I [Ohm]
 U = R * I [Volt]
7

Widerstand
 Schaltbild
 Ohmsches Gesetz
 R = U / I [Ohm]
 U = R * I [Volt]
8

Widerstand
 Schaltbild
 Ohmsches Gesetz
 R = U / I [Ohm]
 U = R * I [Volt]
9

Widerstand
 Schaltbild
 Ohmsches Gesetz
 R = U / I [Ohm]
 U = R * I [Volt]
10

Widerstand
 Schaltbild
 Ohmsches Gesetz
 R = U / I [Ohm]
 U = R * I [Volt]
11

 Schaltbild
 light-emitting diode
LED
13

Diode
 Schaltbild
15

Diode
 Schaltbild
 Sinus von +5V bis -5V
16
ohne Diode

 Schaltbild
 Sinus von +5V bis -5V
Diode
17
mit Diode

LED
 Polung
Kathode (Minus)?
19

LED
 Polung
Kathode (Minus)
 flache Seite
20

LED
 Polung
Kathode (Minus)
 kurzes Bein
21

LED
 Polung
22
falsch

 Polung
LED
23
richtig

 Polung
LED
24
richtig
?

 Vorwiderstand
LED
25
?

 Datenblatt
LED
26

 Datenblatt
LED
27

 Vorwiderstand
LED
28
?
ILED = 18mA
ULED = 2,2V

 Vorwiderstand
LED
29
ILED = 18mA
ULED = 2,2V
IR = 18mA
UR =
R = ?

 Vorwiderstand
LED
30
ILED = 18mA
ULED = 2,2V
IR = 18mA
UR = 5V – 2,2V = 2,8V
R =

 Vorwiderstand
LED
31
ILED = 18mA
ULED = 2,2V
IR = 18mA
UR = 5V – 2,2V = 2,8V
R = U / I = 2,8V / 18mA = 155 Ohm

 Vorwiderstand
LED
32
ILED = 18mA
ULED = 2,2V
IR = 18mA
UR = 5V – 2,2V = 2,8V
R = U / I = 2,8V / 18mA = 155 Ohm

LED
 Ein-Schalten
34

LED
 Ein-Schalten
35
int led = 13;
void setup() {
pinMode(led, OUTPUT);
}
void loop() {
digitalWrite(led, HIGH);
}

LED
 Blinken
36

LED
 Blinken
37

LED
 Fade
 “analog”
 PWM
38
int led = 9;
int brightness = 0;
int fadeAmount = 5;
void setup() {
pinMode(led, OUTPUT);
}
void loop() {
analogWrite(led, brightness);
brightness = brightness + fadeAmount;
if (brightness == 0 || brightness == 255) {
fadeAmount = -fadeAmount;
}
delay(30);
}

Pulse Width Modulation (PWM)
 http://arduino.cc/en/Tutorial/PWM
39

Servo Motor
 #include <Servo.h>
 myservo.attach
 myservo.write
41

Motor

 “Each pin can provide or receive a maximum of 40 mA”
 http://arduino.cc/en/Main/arduinoBoardUno
43

Transistor
 Schaltbild
 Verstärker
45

Transistor
46

Transistor
47

Motor
 Schutzdiode
49

Relais
51

Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory
32 KB (ATmega328)
of which 0.5 KB used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz
Arduino Uno : http://arduino.cc/en/Main/ArduinoBoardUno
53

Schaltplan
54

Schaltplan
55

Language
 http://arduino.cc/en/Reference/HomePage
 Structure
 setup
 loop
 …
 Variables
 HIGH, LOW
 …
 Functions
 pinMode
 digitalWrite
 digitalRead
 …
56

Standard Libraries
 EEPROM
 LiquidCrystal - for controlling liquid crystal displays (LCDs)
 Servo - for controlling servo motors
 …
57

LiquidCrystal.h
 http://www.arduino.cc/en/Tutorial/LiquidCrystal
59
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup() {
lcd.begin(16, 2);
lcd.print("hello, world!");
}

LiquidCrystal.h
 http://www.arduino.cc/en/Tutorial/LiquidCrystal
60

Nokia 5110 / 3310
 http://learn.adafruit.com/nokia-5110-3310-monochrome-lcd
62

Sensoren
64

Sensoren

65

Sensoren DIY
 Capacitive Sensing Library
 http://playground.arduino.cc/Main/CapacitiveSensor?from=Main.CapSense
66

Kommunikation Master-Slave-Bus
 Two Wire Interface (TWI) bzw. I²C
 2 Signalleitungen (SDA und SCL)
 Serial Peripheral Interface (SPI)
 4 Signalleitungen (SCK, MOSI, MOSO, SS)
68

Firmata
 Standard Library
 for communicating with applications on the computer using
a standard serial protocol
 http://firmata.org/
 Computer ist der Host
 Jede Programmiersprache, die den Serial Port unterstützt.
 http://firmata.org/wiki/Download
69

ATTiny 85
 Atmel 8-bit AVR Microcontroller
 8 KBytes In-System Programmable Program Memory Flash
 512 Bytes In-System Programmable EEPROM
 512 Bytes Internal SRAM
 2.7V - 5.5V (ATtiny85), 1.8V - 5.5V (ATtiny85V)
75

ATTiny 85
 6 I/O Pins
 2 High Frequency PWM Outputs
 4 ADC (10-bit)
76

Shields
 Standard Libaries
 SD
 Ethernet
 WiFi
 GSM
 TFT
 …
79

IOIO Board
 pronounced "yo-yo"
 https://github.com/ytai/ioio/wiki
 Host für Android und PC
 USB oder Bluetooth
 high-level Java API (Android Apps)
 Digital Input/Output, PWM, Analog Input, I2C, SPI und UART
81

Raspberry PI
 http://www.raspberrypi.org/faqs
 700-MHz-ARM11-Prozessor
 256 oder 512 MB RAM
 Ethernet
 2 USB
 Linux
83

GPIO - General Purpose Input / Output
 17 GPIO Pins für Ein- oder Ausgabe
 3,3V (level shifter)
 SPI, I²C und UART
 Programmierung zum Beispiel mit Python
 … oder Bash
84
echo "4" > /sys/class/gpio/export
echo "in" > /sys/class/gpio/gpio4/direction
cat /sys/class/gpio/gpio4/value
0
echo "4" > /sys/class/gpio/unexport

Fragen

Wir bedanken uns für Ihre Aufmerksamkeit!
msgGillardon AG
Robert-Bürkle-Str. 1
85737 Ismaning
> www.msg-gillardon.de

Credit
 Fonts
 Famirids http://www.dafont.com/famirids.font
 Petita http://www.dafont.com/petita.font
87

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