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http://stackoverflow.com/questions/14479349/receive-data-from-arduino-bluetooth-device http://stackoverflow.com/questions/10327506/android-arduino-bluetooth-data-transfer

Kirjaa kaikki tehdyt tunnit ylös

a)yhdistä socket b) luo input stream c) aloita socketista lukeminen, tee tätä varten oma funktio vinkki: Google: arduino+android+bluetooth

Tulkitaan tätä, etsi tarvittavat komennot ja säädöt pyörimisliikeanturia varten: #include <LiquidCrystal.h>

LiquidCrystal lcd(13, 12, 8, 7, 4, 2);

int pingPin = 11; // = TRIG int inPin = 10; // = ECHO

void setup() { lcd.begin(16, 2); lcd.print("testing..."); }

void loop() { // establish variables for duration of the ping, // and the distance result in inches and centimeters: long duration, inches, cm;

// The PING))) is triggered by a HIGH pulse of 2 or more microseconds. // Give a short LOW pulse beforehand to ensure a clean HIGH pulse: pinMode(pingPin, OUTPUT); digitalWrite(pingPin, LOW); delayMicroseconds(2); digitalWrite(pingPin, HIGH); delayMicroseconds(10); digitalWrite(pingPin, LOW);

// The same pin is used to read the signal from the PING))): a HIGH // pulse whose duration is the time (in microseconds) from the sending // of the ping to the reception of its echo off of an object. pinMode(inPin, INPUT); duration = pulseIn(inPin, HIGH);

// convert the time into a distance inches = microsecondsToInches(duration); cm = microsecondsToCentimeters(duration); lcd.clear(); lcd.setCursor(0, 0); lcd.print(inches); lcd.print("in, "); lcd.print(cm); lcd.print("cm");

delay(100); }

long microsecondsToInches(long microseconds) { // According to Parallax's datasheet for the PING))), there are // 73.746 microseconds per inch (i.e. sound travels at 1130 feet per // second). This gives the distance travelled by the ping, outbound // and return, so we divide by 2 to get the distance of the obstacle. return microseconds / 74 / 2; }

long microsecondsToCentimeters(long microseconds) { // The speed of sound is 340 m/s or 29 microseconds per centimeter. // The ping travels out and back, so to find the distance of the // object we take half of the distance travelled. return microseconds / 29 / 2; }